Why is my Yanmar 2GM so BLOODY difficult to cold start! Okay, I've read all of the threads in the archives about elbow replacements etc., however, the boat is a '94 29.5! On my old 27, I had an '82 1 GM, and NEVER had a problem with very minimal maintenance. The thing is...once I get the engine started and warmed up, it starts like a champ all day long (and, once it is running, it sounds and performs fine). I've bled all the lines until I'm blue in the face. I really worry about the starter on this thing, as I really have to crank the thing for several seconds to get it started. Any new ideas would be greatly appreciated...
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Doug Merrill
Cold Starting
Here is a tip I picked up at the Mack Boring Yanmar school and it works great. Hold out the engine stop and crank for about 5 seconds. Wait a couple of minutes or so and start normally, then she will start right up. Doug Merrill s/v Dream Catcher
Here is a tip I picked up at the Mack Boring Yanmar school and it works great. Hold out the engine stop and crank for about 5 seconds. Wait a couple of minutes or so and start normally, then she will start right up. Doug Merrill s/v Dream Catcher
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Andy
Old fuel
How old is the fuel? Perhaps it has gotten "watered down" over the years and needs to be removed and replaced
How old is the fuel? Perhaps it has gotten "watered down" over the years and needs to be removed and replaced
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Tim McCarty
To Andy and Doug
Thanks for the response...to Andy: I've checked the fuel and filters etc and everything seems to be clean. To Doug: unfortunately, on this particular model, the engine stop is no where near the starting button (it is located on the companionway stairs (???)...guess I'll need two people to start this boat...thanks again...
Thanks for the response...to Andy: I've checked the fuel and filters etc and everything seems to be clean. To Doug: unfortunately, on this particular model, the engine stop is no where near the starting button (it is located on the companionway stairs (???)...guess I'll need two people to start this boat...thanks again...
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David Mullenax
May Be Time to Dig A Little Deeper
If you've got plenty of good clean fuel to the injector pump, it might be either the pump, pump timing or the injectors. The cheapest and easiest thing now would be to take the two injectors out and have them flow-tested and cleaned.
If you've got plenty of good clean fuel to the injector pump, it might be either the pump, pump timing or the injectors. The cheapest and easiest thing now would be to take the two injectors out and have them flow-tested and cleaned.
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Pete
hard to start cold
Tim, I seam to remember there was a service notice on the gm engine(not sure if it was all of them or just one model)It involved a check valve (before the fuel pump) that was faulty and letting fuel back flow and causing hard starting. Might not help but worth a try. There was some info on this posted her(?) or maybe it was on the Torrenson web site. Sorry about being vague but not recalling all the details. Hope this is some help !
Tim, I seam to remember there was a service notice on the gm engine(not sure if it was all of them or just one model)It involved a check valve (before the fuel pump) that was faulty and letting fuel back flow and causing hard starting. Might not help but worth a try. There was some info on this posted her(?) or maybe it was on the Torrenson web site. Sorry about being vague but not recalling all the details. Hope this is some help !
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Tim McCarty
Thanks Pete
this is big news for sure, and could in fact be the culprit. I just emailed the guys at Mackboring (US distributor for Yanmar)...hopefully they can help. If anyone reading this actually HAS the notice that Pete speaks of, please help asap! Especially if they recomend a part number for the replacement part. I've always wanted to attend one of the Mackboring seminars on proper diesel management, however, they never seem to offer them in the Detroit area (one of the biggest areas in all of the Great Lakes for boats).
this is big news for sure, and could in fact be the culprit. I just emailed the guys at Mackboring (US distributor for Yanmar)...hopefully they can help. If anyone reading this actually HAS the notice that Pete speaks of, please help asap! Especially if they recomend a part number for the replacement part. I've always wanted to attend one of the Mackboring seminars on proper diesel management, however, they never seem to offer them in the Detroit area (one of the biggest areas in all of the Great Lakes for boats).
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Terry
Hi Tim, it was not clear from all the articles...
but what seemed to work on our 1989 H28 with a 2GM when it was cold was to move the throttle to wide open then crank until it would begin to start, then ease it back. In very cold conditions it might crank for eight to ten seconds before the engine would start to fire. Once warm it would always start within one to two seconds of cranking. Terry Terry
but what seemed to work on our 1989 H28 with a 2GM when it was cold was to move the throttle to wide open then crank until it would begin to start, then ease it back. In very cold conditions it might crank for eight to ten seconds before the engine would start to fire. Once warm it would always start within one to two seconds of cranking. Terry Terry
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