Recent content by Nighthawkk

Well there wasn't a tick while in idle or running at low speeds, but you could certainly hear the sputter/backfire as the rpms shot down under heavier throttle. She just doesn't want to move beyond 2500rpm, thus I can only cruise at low speeds. A lot of the time if I push it wide open, the...

It could be that the 10 gallons in the tank did collect moisture over winter even with the dry gas , but it still doesn't make much sense since I already added 30+ gallons of premium + the octane boosters and carb cleaner. But I suppose it couldn't hurt to rule this out as a possibility. I...

Yea it was rebuilt by the previous owner...theres a bunch of new stuff in there along with some chevy parts I think. I guess I could check all the stuff you guys mentioned and then try to have my friend fix it rather than pay the ridiculous $145/hr labor rate at the marina (NY is way...

Well it was serviced multiple times, but this is a new problem that just came out of nowhere...just wanted to figure out what it was by asking to see if anyone else experienced similar issues.

I'm about completely fed up with this engine- its a great older boat, but I have nothing but trouble with the 1987 5.7L mercruiser stern drive. Right now the problem is that I experience constant backfire and sputter from the carburetor at anything above 2500rpm. The engine seems to lose all...