I have a Mercruiser Alpha one 260 from the 1987 that has been having this issue for 3 seasons now. It’s been into a mechanic who cleaned the carb and had it running at the shop for hours. No issues. He thought it was all set.
However we take it out and cruise with it and somewhere between 30 and 45 minutes of cruising it starts to sputter and backfire. Eventually getting really rough and stalling. This happens every season. Same timeframe before sputtering starts.
let it sit for 5 minutes and it starts up and will idle and run at low rpms for 5 to 10 more mins before sputtering starts again.
let it sit for an hour or more and it will cruise for 45 minutes again. Purring like a kitten.
we are at a lose and don’t have money to throw at it. We need to figure this out on our own at this point.
does anyone have any suggestions?
thanks,
Kevin
However we take it out and cruise with it and somewhere between 30 and 45 minutes of cruising it starts to sputter and backfire. Eventually getting really rough and stalling. This happens every season. Same timeframe before sputtering starts.
let it sit for 5 minutes and it starts up and will idle and run at low rpms for 5 to 10 more mins before sputtering starts again.
let it sit for an hour or more and it will cruise for 45 minutes again. Purring like a kitten.
we are at a lose and don’t have money to throw at it. We need to figure this out on our own at this point.
does anyone have any suggestions?
thanks,
Kevin