This happened out of nowhere. Went out on the boat today, ran out to a spot about 40 minutes away, engine ran perfect at 4500 the whole way. Left about 5 hours later, engine started up perfectly and ran at 4500 almost all the way home no problem.
Stopped right before I got home for a minute, throttled back to Neutral, and it started idling real rough at about 400 RPM, and spitting, so I increased throttle and it sounded fine again. Throttled back up onto plane and it ran great at 4500 the rest of the way home. Got to my canal and throttled down and it started idling real rough again around 4 or 500 RPM. I got down the canal at about 1000 -1100 RPM and it sounded fine, but got to my house and pulled the throttle back to get into my slip, and it stalled right out, started up and had to nail it into gear to turn the boat, hit Neutral before Reverse and it stalled again, started up and had to nail it in Reverse to get into the slip.
Now I cannot get it to idle at all, unless I use the fast idle lever and keep it at around 1800 RPM. When I do this it spits while it's running, and as soon as I pull back the throttle it will idle real low for a few seconds, spit like crazy and eventually stall, usually with a big spit.
I've had this engine for 4 years and haven't had a single problem with it, and now it will barely run out of nowhere. I did a decarb on Tuesday, let it sit for a half hour and then went out and did a few WOT runs to blow it out, no problem.
I filled the tank up with gas this morning, completely filled tank, but I figure if it was bad gas or something, it would have happened on the way out, not waited until I got all the way back to the home after running for over an hour at 4500, unless it took a while for my fuel/water separator to fill up or something, which I will check in the morning.
I pulled the plugs and they look fine, not fouled at all. Pulled the cover off the carbs, but I can't get it to run long enough to look down the throats while it's running.
Anybody have any idea. Sounds like it's running on 2 cylinders before it stalls.
Thanks.
Stopped right before I got home for a minute, throttled back to Neutral, and it started idling real rough at about 400 RPM, and spitting, so I increased throttle and it sounded fine again. Throttled back up onto plane and it ran great at 4500 the rest of the way home. Got to my canal and throttled down and it started idling real rough again around 4 or 500 RPM. I got down the canal at about 1000 -1100 RPM and it sounded fine, but got to my house and pulled the throttle back to get into my slip, and it stalled right out, started up and had to nail it into gear to turn the boat, hit Neutral before Reverse and it stalled again, started up and had to nail it in Reverse to get into the slip.
Now I cannot get it to idle at all, unless I use the fast idle lever and keep it at around 1800 RPM. When I do this it spits while it's running, and as soon as I pull back the throttle it will idle real low for a few seconds, spit like crazy and eventually stall, usually with a big spit.
I've had this engine for 4 years and haven't had a single problem with it, and now it will barely run out of nowhere. I did a decarb on Tuesday, let it sit for a half hour and then went out and did a few WOT runs to blow it out, no problem.
I filled the tank up with gas this morning, completely filled tank, but I figure if it was bad gas or something, it would have happened on the way out, not waited until I got all the way back to the home after running for over an hour at 4500, unless it took a while for my fuel/water separator to fill up or something, which I will check in the morning.
I pulled the plugs and they look fine, not fouled at all. Pulled the cover off the carbs, but I can't get it to run long enough to look down the throats while it's running.
Anybody have any idea. Sounds like it's running on 2 cylinders before it stalls.
Thanks.