8v-of-fury
Well-Known Member
Hey there feller's, I got this issue which I thought was possibly an empty carb situation however it seems like it may be choke related.
What I have is this. Last 3 weeks it has been starting pretty damn good first thing in the morning, but this past week it has been stumbling immediately after firing and then clearing up and running fine. It would kick down as normal and then more times than not, have really good cold drive-ability characteristics. I could start it and run for a minute, kick down and drive away at 37f.
This past week however that stumble got worse and was actually causing the engine to stall after firing off. Then subsequently was a complete bear to restart. pumping, WOT, nothing.. all yielded the same result ; tons of cranking, and eventually a few cylinders at a time it would come on line.
I drove it Friday evening, and then it sat all weekend until Monday morning when I went to go to work. Same routine, few pumps, a miniscule amount of throttle and turn the key. crank crank crank crank crank forever, nothing. many pumps, nothing. Finally starts, cylinders catch up and runs fine. This instance had me definitely thinking my carb had run dry. However, how could it? It wouldn't go back down the fuel line (needles at the top of the carb), it would have had to evap or leak down in to the engine.. Which it very well could have. I sealed the secondary wells on this Thermoquad.. but they may be leaking? who knows.
It did this same huge long extended cranking today leaving for work too. Today after work I tried something different. I opened the hood, removed the air cleaner and physically watched the engine start via the remote start. I gave the throttle about 5 pumps to ensure the carb more or less still had fuel in it. I then checked the choke at full cold, it was about 3/16 open maybe which seems like it may be too tight? Anyway, I started it up but with my hand held the choke open a bit more than it normally sits cold. It seemed to help a bit, as the engine fired off first crank. It still stumbled a bit immediately after, but it did not stall.
I wonder what the stumbling after the start is all about, anything I can find on that description is saying it is an empty fuel bowl. I know for a fact this engine and carb will run/idle on basically no fuel in the bowl from a previous mistake on float setting LOL! I had a really shitty illustration and the level ended up being about 9/16" of fuel in the bowl hah.
What I have is this. Last 3 weeks it has been starting pretty damn good first thing in the morning, but this past week it has been stumbling immediately after firing and then clearing up and running fine. It would kick down as normal and then more times than not, have really good cold drive-ability characteristics. I could start it and run for a minute, kick down and drive away at 37f.
This past week however that stumble got worse and was actually causing the engine to stall after firing off. Then subsequently was a complete bear to restart. pumping, WOT, nothing.. all yielded the same result ; tons of cranking, and eventually a few cylinders at a time it would come on line.
I drove it Friday evening, and then it sat all weekend until Monday morning when I went to go to work. Same routine, few pumps, a miniscule amount of throttle and turn the key. crank crank crank crank crank forever, nothing. many pumps, nothing. Finally starts, cylinders catch up and runs fine. This instance had me definitely thinking my carb had run dry. However, how could it? It wouldn't go back down the fuel line (needles at the top of the carb), it would have had to evap or leak down in to the engine.. Which it very well could have. I sealed the secondary wells on this Thermoquad.. but they may be leaking? who knows.
It did this same huge long extended cranking today leaving for work too. Today after work I tried something different. I opened the hood, removed the air cleaner and physically watched the engine start via the remote start. I gave the throttle about 5 pumps to ensure the carb more or less still had fuel in it. I then checked the choke at full cold, it was about 3/16 open maybe which seems like it may be too tight? Anyway, I started it up but with my hand held the choke open a bit more than it normally sits cold. It seemed to help a bit, as the engine fired off first crank. It still stumbled a bit immediately after, but it did not stall.
I wonder what the stumbling after the start is all about, anything I can find on that description is saying it is an empty fuel bowl. I know for a fact this engine and carb will run/idle on basically no fuel in the bowl from a previous mistake on float setting LOL! I had a really shitty illustration and the level ended up being about 9/16" of fuel in the bowl hah.
This particular picture, when uploaded on both the phone and laptop has no option to be made full screen.
