Originally Posted by
xtopher_aaron
Hey guys, Im having some trouble tuning this engine.. Heres where Im at:
The temp is ok, we dont have any fancy gadgets to check, but a drop of water on the head shows no signs of bubbling whatsoever..
However, whilst driving the car, when i release the throttle, the RPM stays up and doesnt go back down to idle until I hit the brakes or dont touch the throttle for a few secs..
Seems like an overly rich low end combined with too high idle revs. Close the low end needle (on the slide) until the revs stay up for at least 5 seconds, then lower the idle revs so that the engine does not rev high after releasing throttle.
You might end up having to richen the top end a bit as well, or you could end up too lean.