Hi Russ,
There is an unknown number of inches of air now “trapped” in the system but would estimate at least 12” if not more based on the height of the fuel level in the tank [and therefore within the pickup tube] plus the fitting on top of the tank and whatever length of hose fuel dribbled out of when I disconnected the hose from the pickup fitting. Then there is 9-10 feet of fuel in the hose to reach the fuel pump on the engine. To my knowledge, the engine is not self bleeding. If it were then just running the engine should solve the issue. Can anyone confirm if that would work? I could try to start the engine and let it run on that 9-10’ of fuel but assumed once that air bubble reached the engine it would stall out. Am on land so cannot run the engine with a load. In previous years I have bled the system at the secondary filter and the HP pump using the finger lever on the fuel pump, but never needed to bleed the injectors. Reading online seems to indicate that is a 2 person job with one pressing the starter button to turn over the engine while the other monitors each injector and closes the bleed screw when solid fuel comes out. Am working solo on this and am not sure I could turn the crankshaft by hand with the compression valves open, if that would work. Using the manual pump and cracking open the bleed screw on the secondary fuel filter should work, it just will take a while and push that 9-10’ of fuel in the hose out onto oil absorb pads and of course all over the side of the engine. Was hoping there was a better [cleaner and faster] way. Have read about annealing the copper washers [probably on this list years ago] but figured Mr Murphy would stop by with his impeccable timing if I tried to do that… Thanks, Brian From: CnC-List [mailto:cnc-list-boun...@cnc-list.com] On Behalf Of Russ & Melody via CnC-List Sent: Sunday, May 06, 2018 11:48 AM To: cnc-list@cnc-list.com Cc: Russ & Melody <russ...@telus.net> Subject: Re: Stus-List Question about bleeding a Yanmar 3GM30F Hi Brian, >From your description posted a while ago, you do not have a system full of >air. Nor do you have a filter full of air. You have at most a few inches of >air in the tank pick-up & hose rune. Is this still the case? Isn't this Yanmar a self-bleeding version once it's running? BTW, copper washers as easily annealed using a propane torch. Google for the method. Then they are reusable. Cheers, Russ Sweet 35 mk-1 At 08:22 AM 5/6/2018, you wrote: Content-Type: multipart/alternative; boundary="----=_NextPart_000_0003_01D3E52C.7D8F9580" Content-Language: en-us Josh, nice videos. The priming bulb would be great to have to facilitate this process. May install one next time I change the fuel filters and am not under time pressure to get the boat launched…  Am still on the hard over an hour’s drive away with an early Thursday AM launch time. Can the seal washers from McMaster be tightened multiple times? Unlike the Yanmar copper washers…  Do you have specific seal washers at McMaster that work in the Yanmar fuel system? Have replaced the 8 and 12 mm Yanmar washers when replacing the fuel filter housing. A “professional†mechanic had over tightened the supply banjo bolt stripping the threads. Found this suggestion on line and not sure if it makes sense; not sure if this would force the air past / through the injectors leave the system fully primed.  Do not want to cause more problems: “If your fuel system is now filled with air, I would try the following. Engage the decompression levers, close the cooling water thru hull, pull the engine stop, and then spin the engine using the starter. Hopefully that will pull fuel through the system and return any air back to the tank. If you just try to start the engine and air is the system, you will get air into the high pressure injector lines and starting will be a problem.â€Â May just go the route Edd suggested and do it manually… Any other suggestions? Thanks, Brian <http://www.avg.com/email-signature?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=emailclient> Virus-free. <http://www.avg.com/email-signature?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=emailclient> www.avg.com
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