banfield
06-12-2006, 02:48 PM
Hi Guys,
I just put my '83 22' Classic (454 Carb'ed) in this last Friday, and had some new engine problems that weren't there last year. To warn you all, I am not nearly as experienced with engines as most of you are, so speak slowly to me.... That being said, I REALLY value the kind of wisdom and expertise this board can bring to its users. I have benefitted greatly from it in the past.
The boat was stored indoors (but unheated) for the winter with about 1/3 tank of gas, with store-and-start in it. On Friday, when I put it in the water, it started easily, and ran smoothly at all RPMs. It's maiden voyage went smooth until after about 5-10 minutes of operation time, when it started cutting out intermittently (i.e., hit for 0.9s, miss for 0.1-0.2s). It did this the whole of the sea trial, whenever I tried to go above 2000RPM. It idled fine.
On Sunday, I added a bottle of dry gas and 5 extra gallons of good gas to the tank, assuming it was condensation over the winter. Again, it started fine, and ran as last year until about 5-10 minutes in, after I'd been out in the waves for a few minutes. Then, it did the same cutting out behavior for a few minutes. After maybe 5 minutes of this, it wouldn't exceed about 2200RPM, and occasionally I felt a vibration in the engine that seemed as though not all cylinders were firing. I limped in again, with it idling fine.
Neither time did I see smoke of any color from the exhaust.
Was the single bottle of dry gas enough to rule out water in the gas?
Could it be a coil or condenser or something electronic that is intermittently failing once it warms up?
What would you recommend for my diagnosis and correction of this?
All advice appreciated!
Thanks!
Don Banfield
Cayuga Lake, NY
I just put my '83 22' Classic (454 Carb'ed) in this last Friday, and had some new engine problems that weren't there last year. To warn you all, I am not nearly as experienced with engines as most of you are, so speak slowly to me.... That being said, I REALLY value the kind of wisdom and expertise this board can bring to its users. I have benefitted greatly from it in the past.
The boat was stored indoors (but unheated) for the winter with about 1/3 tank of gas, with store-and-start in it. On Friday, when I put it in the water, it started easily, and ran smoothly at all RPMs. It's maiden voyage went smooth until after about 5-10 minutes of operation time, when it started cutting out intermittently (i.e., hit for 0.9s, miss for 0.1-0.2s). It did this the whole of the sea trial, whenever I tried to go above 2000RPM. It idled fine.
On Sunday, I added a bottle of dry gas and 5 extra gallons of good gas to the tank, assuming it was condensation over the winter. Again, it started fine, and ran as last year until about 5-10 minutes in, after I'd been out in the waves for a few minutes. Then, it did the same cutting out behavior for a few minutes. After maybe 5 minutes of this, it wouldn't exceed about 2200RPM, and occasionally I felt a vibration in the engine that seemed as though not all cylinders were firing. I limped in again, with it idling fine.
Neither time did I see smoke of any color from the exhaust.
Was the single bottle of dry gas enough to rule out water in the gas?
Could it be a coil or condenser or something electronic that is intermittently failing once it warms up?
What would you recommend for my diagnosis and correction of this?
All advice appreciated!
Thanks!
Don Banfield
Cayuga Lake, NY