Re: Stus-List CnC-List Digest, Vol 129, Issue 24

I agree with Tom: "The black smoke may indicate excessive carbon buildup. If you don't have three hours to run it is, next time you bring her in while the engine is still running out it in neutral and run it up to 90% of max RPM for about 5 minutes. Tom Buscaglia S/V Alera" The combination of

Stus-List RC suggestion

In our club you get a 1 score, same as 1 st place, for doing RC.. It's usually reasonably well attended. -François Rivard 34+ "Take Five' Lake Lanier, GA ___ This list is supported by the generous donations of our members. If you like what we do,

Stus-List Race Committee for Pursuit Race

We do 'em all the time. We use the aforementioned spreadsheets to determine start times according to course length and phrf. We do add a few details: - We have 2 classes / fleets: Performance: Any boat flying a spinnaker and sport boats / Racer Cruisers (No Spin)

Stus-List Race Committee for Pursuit Race

Sorry, the other comment was sent out prematurely when I accidentally hit a shortcut key. Anyway.. Our stipulations: Except for a few exceptions: Your start and finish time are on the honor system as the commodore / RC are racing too (My best sailing buddy and nemesis :-) ) $5.00 entry fee to

Re: Stus-List Spinnaker pole handling

Loved it. This guy makes me look like a saint. I showed it to my whole crew errr I mean family :-) -Francois 1990 34+ "Take Five" Lake Lanier, GA ___ This list is supported by the generous donations of our members. If you wish to make a contribution

Stus-List Diesel in bilge

Hi, You should take a look at the lines and check for cracks in the Racor housing.. My engine developed loss of power / stalling issues last year and it was related to an air leak, once we started looking at the fuel system in details we found issues everywhere. I'm not kidding. My lift pump

Re: Stus-List Deal on starter from Mastry

r about 100 Very confusing I looked it up and there is something about running A stronger wire to the starter Maybe that's the problem? I'd like to know myself Dan 1970 Cv hull 148 Ipswich Sent from my iPhone On Sep 11, 2017, at 5:16 PM, Francois Rivard via CnC-List < cnc-list@cnc-list.

Stus-List Deal on starter from Mastry

Mastry (www.mastry.com) does it again! I just replaced the starter on Take Five this weekend and got a sweet deal on a re-man Hitachi unit: US $128.44 + shipping. Mastry's the best! They always have the best price, they even beat eBay and the shipping is super fast. That's for a real deal Yanmar

Stus-List Perko sea strainer failed - almost lost my boat!

I just replaced mine about 5 months ago. I luckily ran into an NOS one for half price at the marina swap meet about 2 years ago. I finally put it in this year when we re-did my fuel system. Mine had not actually failed, it was just a bit leaky, weeping some when underway. I figured it couldn't

Re: Stus-List Question about anchor light

Hi Chuck, I looked at those as well. They did not have the Strobe at the time, to get the strobe you had to go DIY. It has nice features. The main difference in price is the certification and the machined aluminum case. The MarineBeam and most of the units in that price range "meet or exceed"

Stus-List Question about anchor light

Hi Matt, When I took my mast down I took a good look at the brittle dried-up housing, crazed plastic lens, and iffy led conversion on the existing unit and threw it in the trash. I replaced it with the SignalMate tricolor (

Re: Stus-List Question about anchor light

I understand. Another thing I forgot to mention is the built-in Windex light. If you sail at night it's really nice to have. Decisions, Decisions... I hope it works out to your liking! -Francois Rivard 1990 34+ "Take Five" Lake Lanier, GA On Mon, May 7, 2018 at 1:34 PM, Matthew Schlanger

Stus-List mainsheet set-up

That's a great setup Josh. Ours is a bear for similar reasons with even less leverage on the cabin-top traveler. So far we just grinned and beared it. I'll put something similar on the to do list :-) -Francois Rivard 1990 34+ "Take Five" Lake Lanier, Georgia My boat came setup from the PO

Stus-List C 36 Kite Rigging

On a 36? Unless you have a carbon pole / The Incredible Hulk / or both on your foredeck: You gotta use Dip Pole and in anything more than a light breeze a full complement of fore / after guys As you know my boat is really a 36 footer and my spin is over 800 sq / ft. In addition to having

Stus-List Alternator Charging both banks?

Thanks guys, I'll double check the wiring next time. I do have 2 banks consisting of 3 batteries: 1 smaller unit (Still "Marine Deep cycle" ) as a starting battery and 2 larger ones connected in parallel as house. I also have a "smart" Xantrex Truecharge2 charger. Since we sometimes can't

Stus-List Outhaul replacement, C 37/40+

Hi Bruce, Mine is all Sta Set on our 34+ it's directly connected to the sail via a shackle and a simple bowline knot. It works perfectly. The boat is much the same as the 37+ as it was Rob Ball's 37+ version 2.0 / a few feet shorter. -Francois Rivard 1990 34+ "Take Five" Lake Lanier, GA

Stus-List Alternator Charging both banks?

Do you guys know if the alternator charges all the batteries all the time? I was under the impression that the selector switch effectively directed all the current from the battery banks including charging from the alternator and I usually run on "both" to make sure all the batteries get

Stus-List 34+ / 37+ Layup schedule

Hi Thomas, Below is what I know about the layup schedule on the 34 / 37 + boats. I got this off a forum somewhere (Not this one) a few years ago. Topsides (total thickness 1.19") 1. Gelcoat 2. 1.5 oz. Chop 3. 1.5 oz. Mat 4. C72K/100 Kevlar Fabmat 5. 1” Balsa Core 6. C72K/100 Kevlar Fabmat

Stus-List problem getting the raw water flowing

We had the same problem a couple years ago, it was the elbow. Many "Experts" told me not to waste time with the elbow on a freshwater boat. Wrong. Duly following the "expert" advice I fixed / replaced everything else and reamed all the tubes in the heat exchanger using wood dowels. It was not

Stus-List 3GMF knocking sound

Hi Kevin, In addition to making sure the transmission is fully engaged (We had that issue too, for me, it was solved with a simple cable adjustment), it sounds like you should jump in the water and take a good look at your prop. What you need to do is grab the blades and wiggle them against the

Stus-List 3GMF knocking sound

Hi Kevin, The only way I know of is to use another tach... That doesn't have to be expensive or complicated. I used my R/C airplanes optical tach to validate mine and it worked fine. You paint a sliver or white stripe on the shaft / shine a flashlight on it / point the tach at it. They are

Stus-List Amazing USCG rescue - Anybody else see this?

Thanks for sharing, it's a well written and poignant story. I think it's easy to find faults from a distance. I'm also of the opinion that younger / tougher sailors would have sailed home as the mast was still up, the sails there, the boat wasn't taking on water, and the inoperable pumps sounded

Stus-List DARK SIDE

Yep I hear you on that. There's a few Catalina 27's on my lake too with phrfs ranging from 198 -213. The 198 phrf boat is said to be an ex national champion with the hull's gelcoat ground-off to save weight.. He's good sailor (British chap), had fresh sails, was a tough nut to crack,

Re: Stus-List DARK SIDE

Our Typical beercan races were 2.6 - 2.8 nm so it's 198-102= We owe them 96 sec per mile X 2.6 - 2.8 = 4:30 to 4:48 or close to 5 minutes for us LOL. We were Typically less then 30 seconds ahead in corrected time so always a nail biter on both sides (A tribute to how well the PHRF systems works

Stus-List Touche' hydraulic backstay adjuster repair

Hi Dennis, You could also call Rick Zern 850.261.4129 (http://zernrigging.com) Great guy, he's definitely Navtec certified some say he's the best Navtec guy in the Southeast. He's in Pensacola, your neck of the woods. Heck, you could drive your adjuster over in a pinch... Good luck on the

Stus-List North Nordac Sails

I would have a Nordac 3Di as my 135 Genoa and probably as a main if North didn't try to extort money from me.. Last october, I put in an order fro the 3Di Nordac 135% genoa complete with a 50% deposit. A month later, instead of an update on the progress of the order, my local loft got a ransom

Stus-List Diesel Injectors

If you're looking at blue smoke it's not as likely to be the injectors. Injectors usually get linked to black smoke / an overly rich mixture. Blue smoke is more likely compression related or somehow the lube oil blows by the rings and burns (It seals-up as the metal expands upon warming up) But

Re: Stus-List Sail Changeover for 29 Mk1

a C 34R out of >> Magothy River without crew, no arguments, no worries, I love the >> experiences without any negatives. I haven't won anything but I'm having >> fun doing the distance races to Baltimore or Annapolis out and back. >> >> >> You should consider saili

Stus-List Sail Changeover for 29 Mk1

I sail a 34+, not a 29 but here's what I was told by my sail maker who was the guy beat in the phrf cruiser class for many years on the lake. For what it's worth: For racing in light wind conditions (10 and under) , especially beer can racing the 150 - 155 gennies are gold, you get great power

Stus-List Toe Rail Water Drain

I have seen little "spouts" you can buy to keep the water away from the hull. Here's the easiest way to keep the black streaks at bay: Keep your deck clean. Especially on the 1st couple inches near the toe rail where the crud accumulates. Doing that regularly has reduced my black streaks to

Stus-List Help with folding prop insights?

Hi Bruce, I have a Martec folder on my boat (34+ also called 34/36) which is your boat's little sister. We've been using it for 3 seasons and it's world of difference in sailing speed compared to a fixed 3 blades. It's measurably better in all conditions. What you need to get it going: -

Stus-List recommendations for a small bilge pump

Hi Mike, I have this Johnson pump ( https://www.westmarine.com/buy/johnson-pump--cartridge-bilge-pumps--P011_330_001_541?recordNum=17) in mine in conjunction with a Water Wich. The pump is the small / cheap one as my sump space is extremely limited. It's been in there 4 years / so far it's been

Stus-List Holy Crap

Hey, Nothing that about $200,000.00 and 2+ years of solid work wouldn't fix.. https://www.yachtworld.com/boats/1982/C%26C--3232551/Deale/MD/United-States? refSource=standard%20listing#.W1ZvV7gnaUk -Francois 1990 34+ "Take Five" Lake Lanier, GA ___

Stus-List Catharsis message

Hi Dave, I'm truly sorry.. It happens, most of us can confess to bottoming out. I my 5 years I've run aground twice here on the lake in much less challenging situations. I was fortunate the bottom here is mostly mud. I know how stuffs gets a bit crazy as you cross the finish line in less than

Stus-List Vinyl Stripe

Hi Tom, Holland Marine (http://www.hollandmarine.com/) in Toronto has the original C stars and diamond pattern to add the finished factory look to your stripe. I used those on my boat when I re-did the strip 4 years ago, I used a Bayliner blue stripe (From https://greatlakesskipper.com ) that

Stus-List Deck core repair advice sought

Hi James, I would remove some of the deck hardware around the mast and double check. I don't believe that the coachwork area is cored and where you see the issues it's than likely just compression damage on the Coromat. I.E I'm fairly confident that there's no rot and you could more than likely

Stus-List Edson Wheel Idler Pulley Plate

Hi Bruce, You don't want the Edson idler plate anyway because they are made out of mild steel which is not suited for the application and why they corrode into oblivion. (We have the same issues on the 34+ , 34/36, 36+, and 34R variants If your's is still decent you can send it to Garhauer

Stus-List Intermittent starting Yanmar 3GM

Hi John, I had the same symptoms on mine, at first I just made sure my batteries were on "All" at least at the beginning of the weekend and that bought me a couple years.. Then I replaced the button switch as there's no relay and it takes the brunt of the current. That bought me another year.

Stus-List Mast sensor upgrade experience requested

Hi James, I have a 34/36 and I did replace the sensor twice.. Once with the mast off and once "in-situ"/ My mast did have a conduit and I used the old wire as a messenger line as mentioned before. Really straightforward / no issues. The harder part is that I had to fabricate a custom aluminum

Stus-List Grateful 34+ sailor

Hi Rob, Very cool to "see" you on the list. I have the privilege to own a 1990 34+ and 5 years into owning it I'm still amazed at how far ahead of its time this boat was. My boat was originally a NY great lake boat, then moved to Florida, and eventually Lake Lanier (Near Atlanta). I believe

Stus-List Lithium Batteries LiFe vs Lipo

Just a quick note as a lifetime R/C planes guy with a fair amount of experience experimenting with battery chemistry.. The "Lithium" batteries referred to by Joel are NOT the same as the exploding laptop / phone batteries you hear about on the news. The batteries in Laptops / Phones / Electric

Stus-List Filling diesel tank

Hi Dave, I just use the regular cheapo yellow plastic 5 gal Jerry can I bought at Advance Auto parts.. When I first saw it I didn't care for the "over engineered" spout system now mandated by the feds but it turns-out to work really well. It does not allow the fuel to flow until you press the

Stus-List Winterizing water system

Hi Marek, We don't worry about it. The pink stuff is the backup for the backup... I run 2 "True North" heaters with one set at the lowest "No Freeze" setting in case the main one fails. The Pink stuff is in case both stop because of extended power failure that could caused by a bad spell of

Stus-List Winterizing water system

Hi All, Pretty straightforward here: Emptying the tanks: I Just run the tanks dry by running the water thorough the faucets normally then clean / dry the tanks using paper towels through the access ports. Adding the pink stuff: There's a "T" fitting after the pump (Alleviates having to run

Stus-List Glad you didn't buy my boat :-)

Hi Richard, I was in the middle of extended negotiations when you came down to look at the boat. The broker told me about you guys coming (Hoping it would motivate me) / I held firm hoping you wouldn't put a competing offer forward. I'm glad it all worked out well. Nice to "Meet you"

Stus-List Engine Ventilation

Hi Jim / Chuck I would absolutely look at the elbow. I replaced pretty much everything on my 3GM30F's cooling system except the heat exchanger chasing cooling issues and the main culprit was the elbow, which eventually was 100% obstructed. The added pressure in the system caused my aging hoses

Stus-List Fun ride on Saturday afternoon...

https://photos.app.goo.gl/4xyU67zgySwT1zkSA Sailing on Flo's coattails Saturday. Steady 12-15 knots winds with bouts in the mid 20's, pretty sporty joyride :-) -Francois Rivard 1990 34+ "Take Five" ___ Thanks everyone for supporting this list with

Stus-List 34 genoa sheets

Hi, I use 1/2 inch Sta. Easy on the hands, best bang for the buck. No need for any shackle just use a "Luggage Tag Hitch " or "Girth Hitch" knot. There are enough opportunities for this thing to snag during tacks as it is. I've been using the luggage tag hitch on all my foresail uses for

Stus-List Offshore Boat

Like Chuck, I'm guilty of bragging about the competition crushing speed of my 34+ and her 40 footer like accommodations but I also came close to making an offer on a Hunter 37.5. If you google it a bit, you'll find a guy who's circumnavigated a few times over on a Hunter 37.5. I also have a

Stus-List painting strategy for deck Interlux vs Pettit

Hi Chuck, I used Perfection on my cove stripe 5 years ago, I just looked at it in the yard today after pulling it out of the water for the first time in 5 years and I still have... Perfection. When I applied it 5 years ago like you, I picked the wrong time of day / got direct sunlight and I had

Stus-List Driveshaft Castel Nut Thread size

Good afternoon all. I need some help figuring out on the thread castle nut used to hold the prop on my 34+ . It's a 1 1/8 stainless steel shaft with a tapered end. I know the thread is not 3/4 - 10 because I bought replacement castle nut with that thread and they did not work, it looked small .

Stus-List Marinco solar vent motor

Hi Dennis, I replaced mine about 4 years ago, it's still running 24/7 * 12 months a year. I also replaced the NiMH battery at the same time, I used an Eneloop "C" size, don't think those are still available. They sell a "C" adapter for their AA battery or you can just buy a regular NiMH "C" or

Stus-List Hitachi 55A alternator question - 12.63 v output

Hi Russ, I had alternator issues (Diodes) I looked into having refurbed and found it wasn't worth fooling with. I found a shiny, brand new, genuine Hitachi (Yanmar's OEM) alternator for about $75.00- 80.00 shipped on eBay. I just put it in myself, it was a plug and play 30-45 minutes install.

Stus-List Bilge cleaner

Hi Fred, I just pour some of Starbrite's cleaner in my sump. Works well. I tend to mostly use Starbrite stuff for cleaning these days. I found that their products typically perform much better than brand X and are often cheaper. It's on sale 40% off at West right now.

Stus-List Interior teak

Hi Shawn, For what it's worth, my cabin top handrails were varnished and looking pretty bad. I sanded them . and they look new. It was pretty easy to sand, it should work out well for you. Good Luck with the project. regards, Francois Rivard 1990 34+ "Take Five" Lake Lanier, GA

Stus-List The Low drag Prop saga is over!

Last June, I took the opportunity to remove my old tired Martec prop and send it to the factory for a rebuild while my boat was on the hard for a new bottom paint, Sounded like a great idea except that the post office lost the prop. Upon realizing that the prop was gone for good, I did much

Stus-List satellite receiver install - does canvas matter?

I would call Sirius and ask. I've had Sirius XM in my cars since 2008 and any kind of obstruction absolutely blocks the signal. Even tree leaves which are not contiguous block the signal. Same for home receivers, heck they loose signal when obstructed by thick clouds from a storm Unless

Stus-List The Low drag Prop saga is over!

Hi Gary, You're right the 34+, 34/36, 34 R's came with a variety of engines and transmissions. They had me submit both my engine serial # and a picture of the transmission placard. (Yanmar 3GM30F / Kanzaki 2.6:1 Ratio) and they said: "Your engine is the most popular out there, we know what

Stus-List Air Conditioning Installation Questions

Hi Edd, I know this one's been already extensively covered. But. David Mocny whom also posts (Used to?) on this list also installed A/C on his 37+ some years ago. He went with 2 units: A 16,000 BTU (If I remember right) in the back and a smaller unit for the v-birth / salon area. I'm certain

Stus-List The Low drag Prop saga is over!

A couple more points. First I want to mention that what ultimately helped me get through the ordeal was Chuck Scheafer and this list. I knew from having actually motored on Chuck's boat and that the Max Prop would work well. I went for the Flex O fold mostly because it was over $1,000 cheaper

Stus-List Engine compartment bilge pump and blower

When to run a blower with a Diesel? Never. That's part of the whole point of having a diesel in the first place. Best Regards, -Francois Rivard 1990 34+ "Take Five" Lake Lanier, GA ___ Thanks everyone for supporting this list with your

Stus-List Engine compartment bilge pump and blower

petroleum products I would recommend running the blower. Also my coast guards friends to the south asked me in a had a blower and requested I turn it on when I was boarded for an inspection Mike > On Sep 30, 2019, at 10:55 AM, Francois Rivard via CnC-List < cnc-list@cnc-list.com> wrote: >

Stus-List 2020 Rendezvous (s) Mid East

Sounds like fun! I would make every effort to drive over. I've toyed with going up to the Northeast events a few times including this year but the extended trips required didn't work with my schedule.. -Francois Rivard 1990 34+ "Take Five" Lake Lanier, GA

Stus-List Backstay mounting cracks

Hi David, I have the same system which I have improved with a better block system but there is not even a hint of over-stressing the transom. Of note: As per one of the prior comments I always set the adjustment back to loose before leaving the boat. I use it / pull it all the way down pretty

Stus-List Marco Pumps UP3E

Hi Bill, I'm familiar with gear pumps and I saw what I was fearing might be an issue: Grease / gear material shavings. The "Don't use the pump for this use case" list includes "Foodstuff Liquids" in the possible dangers list it says 'Foodstuff Liquid contamination' I wouldn't use that as a

Stus-List Boat insurance...reimbursement vs. depreciated coverage

I have agreed upon value with Allstate. Straight-up agreed-upon value coverage, 35-40% cheaper than Boat US and Geico. (Geico's been insuring my cars since the 90's but they wouldn't / couldn't compete with Allstate.) I'm on an inland lake / that most likely makes a difference. Your actual

Stus-List Engine cut out in rough seas

I second the Biobor JF ! It's got to be good if it's Biobor Jean-Francois (JF) Lol All kidding aside, I've used it religiously and my fuel looks like green-ish maple syrup. Nice and clear. Not only in the Racor but It's been checked by shining a flashlight in the fuel tank inspection port,

Stus-List Air Filter Media, Yanmar 3JH2E

Personally, I'd leave it alone / no filter is necessary or beneficial if it didn't have one from the factory. The Yanmar guys have sold hundreds of thousands of those engines.. The engineers know what they're doing. How much dust is in suspension in your enclosed / damp engine room? If you

Stus-List NMEA 0183 - Do I really need an Opto-Islator?

Hi Bill, There are a few ways to skin that cat. I'm also an IT guy, we live for workarounds :-) Skin the cat #1 To Navico's point: It would probably be somewhat of a feat to get the Zeus2 to recognize a 20 + year old WP 30 as a bonafide NMEA2000 modern day autopilot. Someone could spend months

Stus-List NMEA 0183 - Do I really need an Opto-Islator?

Good am all, I'm finally about to replace my old broken Navico wheel pilot with a similar one I found used cheap. I would like to network it with my B Zeus2 charplotter to allow the "Steer to wind" feature. - The Wheel pilot needs the old NMEA 0183 network connection and fortunately the Zeus2

Stus-List Sailtimer app and racing

Dave's math is right. These guys may know their stuff on software but they don't apparently don't know much about racing a sailboat. To win you have to work ALL the details. Completely dismissing any of the components is professing ignorance. The racing software helps.. to a point. I've used

Stus-List SailTimer Experiences

I meant to say Wind shifts / tide / currents should NOT be issues... Merry Christmas! -Francois ___ Thanks everyone for supporting this list with your contributions. Each and every one is greatly appreciated. If you want to support the list - use

Stus-List SailTimer Experiences

Hi John, I would definitely consider it / most likely get it. I use a combination of Sail Racer app on my phone and the layline function / Tack "A" vs tack "B" on my (still killer) B Zeus2 Touch charplotter. Sail Racer is really cool to have for starting line tactics and the B does give you nice

Stus-List Tips for finding and keeping racing crew

I wish there was a secret formula on that beyond who you already know, luck, time, and lots of patience.. This year I decided to up our game and go spinnaker class only to be reminded (Too many times) why I didn't do it in the past. Main reason for staying JAM before: crew. Main challenges this

Stus-List Stus list painting boot top

Hi Rod, I did mine using Petit Perfection (Now called Interlux Perfection) and after 6 coats on one side and 5 on the other it came out: Perfect. After 5 years, it's still perfect and the only maintenance it has received is the occasional wipe down using lake water while we're swimming.

Stus-List 34+ Idler Pulleys and Cabin Top Compression (Kevin Driscoll)

Hi Kevin I didn't see anything to worry about either. Ours is the wing keel version and we love it. To Steve's comment: It's fast as heck. On our lake, (No wave surfing) I've seen sustained 8+ knots many times with bouts in the low 9's. I saw 9 momentarily in just 14 knots wind last fall with

Stus-List Looking for replacement part for spinnaker pole end coupling

Hi Matt, You might want to move from the ball and socket design and go simple with a loop on the car and regular trigger jaw setup. The car was originally missing on our 34+ and my rigger told me about the simpler (And very popular) setup. It's cheap, super rugged, and easy to use. Here are

Re: Stus-List Best Shower Boat

tually. And there is a seat in the shower stall too, > as Edd pointed out. > > Ken H. > > > https://en.wikipedia.org/wiki/C%26C_37/40#/media/File:C_37-40_Heads_Interior.jpg > > > On Fri, 15 May 2020 at 16:06, Francois Rivard via CnC-List < > cnc-list@cnc-list.com> w

Stus-List Best Shower Boat

Hi Joe, Both the 34+ (34/36) and the 37+ (37/40) have separate shower stalls. Both have curtain and all. Amazingly enough even the one in the 34+ is normal human size / comfortable to take a decent shower / store stuff / house a free standing A/C unit. Also, they have a separate shower sump

Stus-List LF38 Fuel Tank Replacement

Hi, I hope you mopped the diesel up and cleaned with soap as much as you could as quickly as possible. I've read about horror stories of diesel eating the gelcoat / getting into the substrate and causing much worse damage... -Francois Rivard 1990 34+ "Take Five" Lake Lanier, GA

Stus-List Favorite deck cleaner/recipe?

Hi David, How about your boat's deck self-bleaching / cleaning every time it rains? That's pretty much where mine is these days. I give it a bleach / Woody's wax in the spring and another one in the fall. Beyond that I rinse the deck once a month or two and clean the black streaks every month

Stus-List Sunglasses favorites

Rayban Carbon Frame Aviators. Why pay extra for Carbon? They are light / very stiff / don't lose their adjustment and stay on your face. First pair of sunglasses I've ever owned that doesn't try to slide off my face constantly after a year or 2 of use. Given the fact that they are entrusted to

Stus-List Yamaha 4hp 2 cycle

Hi David, It does sound like it's running lean on the high end. The solution is likely to be related to a fuel flow problem like a clogged carburetor jet or obstruction / air leak / weak point in the fuel delivery system such as a clogged filter / fuel pickup / regulator / missing gasket /