3208 engine idle issue - SailNet Community
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post #1 of 3 Old 06-14-2016 Thread Starter
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3208 engine idle issue

My uncle has a trawler and the CAT 3208 engine is having an idle problem. As he was taking the baby out, it was experiencing a rough idle, but stops if it goes around 1000 rpms. That's not normal right, to go up to that much? what can be the cause?
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post #2 of 3 Old 06-17-2016
al brazzi
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Re: 3208 engine idle issue

I would look for air leaks in the system. I had a filter leak and would suck enough air so my 2 cly would not idle. The leak was small enough where it wouldn't affect operation in higher RPMs. The important thing to understand is the return will move enough fuel back to the Tank at the higher speeds to flush that air out. There was another poster who just went through the same thing and he found a brand New shut-off valve at the Tank leaking but it was under Vacuum so no wet spot. Read to see his test, pretty smart solution.

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post #3 of 3 Old 06-17-2016
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Re: 3208 engine idle issue

Not too many sailboats have 3208's. You will do better asking elsewhere like thehulltruth.com or even better, boatdiesel.com.
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