Backed out to where the throttle isnt touching it. Throttle cable is not even attached when I am trying this. Air mixture screw is at 2 1/4 turns as suggested. I also tried it fully closed, 3 and 3 1/2 with no change. Fresh cleaned carb, new oil, new gas.
High RPM low speed
- Thread starter Tanner Logan
- Start date
You had the carb off so look at how it works.
Choke on is when the plate blocks the carb throat.
Choke off is when the plate is sideways and not blocking the
carb throat.
So there was nothing wrong with your carb except you were trying to
run it with the choke on?
When you put the carb back on you must have made an air leak so the
air mixture screw doesn't have any effect.
Putting the choke on when you have a large air leak will compensate
for the leak.
Did you mess the carb intake gasket up or put it in the wrong place?
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If you have a question about 4 strokes put it in the 4 Stroke Forum
or you will get answers from people who think you have a 2 stroke
bicycle engine.
I assure you I looked at it thoroughly and just did not understand what he meant by slide.
And yes it seems the only thing is the choke was on. But what would make the engine rev as I am attempting turning it off? Not just rev a slight bit but enough to where I am uncomfortable turning it all the way due to the high RPM. Something as simple as an air leak could cause such a problem?
When I reattach the carb should I tighten it down obnoxiously tight or just a good fair amount? Oh so many questions that only trial and error/success could fix..
And yes it seems the only thing is the choke was on. But what would make the engine rev as I am attempting turning it off? Not just rev a slight bit but enough to where I am uncomfortable turning it all the way due to the high RPM. Something as simple as an air leak could cause such a problem?
When I reattach the carb should I tighten it down obnoxiously tight or just a good fair amount? Oh so many questions that only trial and error/success could fix..
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Yes, large air leaks in the manifold will make the engine scream to redline
like they are going to blow up.
Find the air leak.
Thanks for the patience and help. Hopefully you wont hear from me anymore unless it's about the finished product.
