That's what I'm trying to figure out, how do I correct that low/surging idle?
Briggs & Strat wont idle stable, rough/low idle
- Thread starter MEDEL514
- Start date
Looks about the same as mine. Mine had no damage, and no signs of bending. I bent it on my own trying to play with the adjustment, but I out it back to where it was originally.
I would take the carb off and give it a good cleaning.
make sure the holes in the bowl nut are clean etc.
make sure the holes in the bowl nut are clean etc.
Carb cleaning was one of the first things I did when I put on all these new parts.
I did that by manually holding tension on the spring, and it did increase the RMPs, but the idle was still bouncing all over the place. I'm lost what to do.
So it ran fine at higher RPMs, but at lower (idle) RPMs it surged?
As Ilengine said these engines are made to run 2800-3600 rpm.
no need for a pushmower to idle.
As Ilengine said these engines are made to run 2800-3600 rpm.
no need for a pushmower to idle.
AVB
Well-Known Member
What is the model and type number of this engine so I can look-up its IPL to see if it was ever intended to idle. But as noted does it surge at the higher rpms?
If it was intended to idle and the surging is only at idle it require a jet resizing as most of these later carburetors are non adjustable.
Also with it being a 6.25 hp I assume it is a OHV engine so have you checked the valve clearances?
If it was intended to idle and the surging is only at idle it require a jet resizing as most of these later carburetors are non adjustable.
Also with it being a 6.25 hp I assume it is a OHV engine so have you checked the valve clearances?
I'm sorry to confuse, but you are correct, it doesnt have an idle. The normal operation RPM is not being reached because the RPMs are bouncing and keeping the motor running at a lower RPM than normal. When I tried to pull on the spring to get it into the normal RPM range, it still surged and would not smoothen out.
The only time I can get it to run smooth is when I hold steady the black plastic carb valve that the spring attaches to. That black plastic valve has an rod that connects to another arm in the back of the engine. I'm guessing that this is what's supposed to open/close the carb to a stable idle. What controls this arm, and how is it calibrated?
The only time I can get it to run smooth is when I hold steady the black plastic carb valve that the spring attaches to. That black plastic valve has an rod that connects to another arm in the back of the engine. I'm guessing that this is what's supposed to open/close the carb to a stable idle. What controls this arm, and how is it calibrated?