Originally Posted by
Dr. Evil
Good day. I have a RB Worlds S7 that I am running and for some reason, I can't get this thing to stop idling high. I have lowered the idle screw and nothing seems to work. When the engine is cold, it seems to idle low, but, when it comes up to temp, the idle goes up and stays there.
I have had this engine for some time, New front bearing. Engine has less than 1 gallon on the pistion/sleeve. running Odonnell Fuel/Odonnell Glow plug no 99.
I have taken the engine appart, inspected it and all appears fine. Engine was resealed with engine sealant. Carb sealed also. Stills idles high.
At first, I thought there was bubbles in the fuel line a I cleared the bubbles and still idles. Fuel tank was removed and pressure tested for leaks. Non I could find.
Using clear fuel line so, i didn't see any cracks.
Any suggestions??
All Engines have this problem after some gallons. Is air getting inside. Check all o-rings (all on carb and underhead and back plate). Sometimes is also front bearing problem. Sometimes both. If you intending to fix this, just for the experience for you to gain more, try one step at a time so you know what was the problem.
I have realize that when flame outs take place after refueling, most probably will be carb o-rings. But i couldn't really find exactly the problem so i check all o-rings and front bearing every time. rear bearing doesn't really cause problem tuning but it cause a lot of noise when engine is running. Main problem in my country is having this small parts and repairing the engine.
Any experience on troubleshooting the Engine? Specially BXR? Please experienced guys share some knowledge.