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GEM555,
Two questions - 1) do you have the Moyer Manual? 2) have you read it?
I've owned one boat with 3 diesels - two Perkins 6-354 for propulsion and an Onan genset. I can work on most of a diesel, but can't do the injectors or the injection pumps. Breakdown at sea and I'm dead.
I can't think of anything on an Atomic 4 that's beyond a repair at sea.
A lot of stuff that's blamed on the Atomic 4 is actually add-on stuff - usually a bad exhaust system allowing water back into the engine.
It sounds like your engine has a basic fault, likely related to the exhaust system. Next time you have a no start, give it a spray of starting ether and try it - this will identify either spark or fuel issues. If a valve is hung up, a compression check may be needed.
Give us a chance here. If we can't come and play doctor, you'll have to play nurse and give us the symptoms - we can then try and diagnose.
But please, don't tell us what a lousy engine the A4 is! You'll get nothing but argument here. Personally, I've been doing A4s for 30 years and have done 2 overhauls. I know they're good engines.
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