That is what I do in the winter months Capt Perry, works well. I have no problem starting my 671s darning the warm summer months. I live in Vancouver BC and last year the water my marina totally froze over, there is a fresh water creek that empties at the head of the marina that raises the freezing temperature but just the same it was cold last winter here. Good advice in my opinion. I'm not a diesel mechanic and have no idea if this could do some kind of damage but what I can say is that I have been using your method for years not with no ill effect. Monty.
-----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Perry & Cindi Sent: September-30-09 12:29 PM To: [email protected] Subject: [UnifliteWorld] Re: Hard starting Detroits when warm I have seen people crank and crank and crank 671's, I show them this trick and they start every time very quickly and they do not smoke out the entire marina with fuel build up. BEFORE trying to start the engine, HOLD DOWN the KILL switch, then start to crank the engine with the kill switch held in (do not let go of it), after a second or two let go of the kill switch while cranking and presto, it starts right up. Capt Perry -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Kerry Lebel Sent: Wednesday, September 30, 2009 10:10 AM To: [email protected] Subject: [UnifliteWorld] Re: Hard starting Detroits when warm Lot of good information here from everyone's posts. Thanks! I checked the battery levels and they are fine. The batteries are all the same type. I actually have 3 sets of batteries. 4 house batteries, two starter batteries and a separate battery for the genset. All of my battery cables were replaced in May, with the batteries and are not automotive. I will make sure I check and clean all the connections this weekend and I definitely going to order up those check valves. Even when the engines weren't turning over slowly the starboard engine needed lots of cranking before it seemed to get fuel. So that makes sense. If the check valves and cleaned contacts don't fix it I will pull the starters and get them rebuilt over at Romaine Electric. Awesome...less than 24 hours after posting the question I have a plan. You guys rock. Thanks, Kerry -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of sonofstrat Sent: Wednesday, September 30, 2009 6:38 AM To: UnifliteWorld Subject: [UnifliteWorld] Re: Hard starting Detroits when warm Kerry: as suggested by everyone to check the batteries, connections, electrolyte levels etc but also do a battery load test to see if the batteries have load capacity and check the alternators for output to see if they are putting back into the batteries what you are taking out. From your explanation of hard starting, where these engines overhauled recently or are they original.Detroit's do not have hard starting issues unless as suggested they have bad starters. You could suffer from a fuel drain back problem at the primary filter which will starve the engine for fuel momentarily until the transfer pump picks up the fuel and gets it to the injectors. You might have to install one way check valves at the suction side of the primary filters which traps the fuel in the system and reduce hard starting issues. Your local Detroit dealer will have these check valves part # 23516919 or 23516993. I installed a lot on logging trucks with V-12's as they had the same starting issue. Just another possability to look at if the starters and your electrical systems are ok. If the engines were overhauled recently, there was an issue on the cam timing and piston compression ratio from Detroit Diesel as they used different liners and pistons for California versus the rest of the U.S. Let me know, just some other ideas on what could be a problem. On Sep 29, 5:03 pm, "Kerry Lebel" <[email protected]> wrote: > Hey All, > > Like the title says, my Detroit 671's are VERY hard starting when warm. As > in...one wouldn't even restart. I had to go through the Ballard Locks this > weekend with just a Starboard engine. (NOT FUN) My batteries are brand new > this season and I know they are fine. Unless the block heaters are on (even > during the summer), the engines turn over extremely slow and are getter > harder to start. But when they are fully warmed up they are nearly > impossible to start and the engines turn over very slowly. My first thought > is that I either need to have my starters rebuilt or replaced. Anyone have > any other ideas? > > Thanks, > > Kerry --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "UnifliteWorld" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/unifliteworld?hl=en -~----------~----~----~----~------~----~------~--~---
