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Thanks again to everyone for the recommendations. And I agree that starting with fresh fuel and filters is always the best thing to do, but it's a little expensive these days and I thought I could skip that step in this particular situation. Guess I was wrong, again! Stan, I certainly agree...

I finally got back to the irregularly misfiring MEP-003A and went down the list of suggestions for fixing it. By far the most frequent recommendation was to put in fresh fuel and clean out the fuel system, so that was the first thing on my list. I drained the old fuel and changed the filters...

Thanks! That's still the first thing on my list. Hope it warms up a little so I get to do that soon. Richard

Robbied46, Yes, I agree with you that the quickness of the problem from start to finish is a real puzzle. The duration of an event must be less than half a second. During that brief time, the Hz meter swings down about 2 Hz and the governor arm raises the IP throttle perhaps 0.1 inches in an...

Jerry, The Feds I got this genny from pointedly mentioned that they had put good diesel fuel in it, and that couldn't have been more than a couple of months before I bought it. So I am thinking that the fuel in there now couldn't be more than, say, 6 months old. It smells OK although it has a...

Robbied46, Thank you for two good suggestions. A weak fuel pump and/or clogged filters, as you suggest, was my first suspicion also. However, there seems to be plenty of fuel pressure at the input to the IP, although I haven't measured it with a gauge. I estimate 10 psi fuel pressure when...

Looking for some help from all the smart diesel engine folks on this forum ... I have a recently rebuilt MEP-003A with about 10 hours on the clock that runs very well except that the engine seems to miss a beat about every 10 to 20 seconds It misfires just enough to cause a slight dip on the...