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I have twin 5.7s on a 1988 30' Celebrity. I put in rebuilt QuadraJet carbs last season and they ran great until this month. If I accelerate slowly both engines run great. As soon as I hit about 3900 RPM at WOT, the port engine starts to rev up and down between 3500 and 4200. It seems to bog...
I recently replaced one of my lower shift cables because it was very difficult to shift and the interrupt switch was causing the engine to die. I put in a new cable and it would shift easily when the outdrive was almost all the way in, but when we tightened down the bolts, it took a lot of...
I have a 1982 Mercruiser 140. It has been running great all season. Recently it has started to run very rough and even stall after it has been running for 20-30 minutes. I have a Mallory distributory that is a year old. I set the dwell at 34 and the timing at 6 BTDC. When the engine is...
I recently purchased a 1988 30' cabin cruiser with twin 350's. It is hard to start. Likely becuase someone previously removed the choke valves off of both Quadrajets. Is there a reason to take them off? Should I try to find replacements? I plan on rebuilding both carbs over the winter.
I have a 140 Mercruiser that runs perfectly when cool. After 20-30 minutes it starts to loose power and I go from 4500 RPM to 3000. At that point the RPMs can vary widely and at times go back up to full power.
It had a blown head gasket and cracked head when I bought it, so I have already...
