Idle too high

gillhog

Newbie
Joined
Jan 22, 2020
Messages
8
Location
Fort Worth, TX
I unfortunately had to replace my engine recently. The old one had broken valves lodged in pistons. Everything works great except that it idles too high, around 1500rpm. The throttle position sensor is set full counter-clockwise for lowest rpm. Idle control valve is clean. I even did the Subaru relearn procedure - no difference. Any ideas?
 

Vance

Gyroplane CFI
Joined
Oct 30, 2003
Messages
16,759
Location
Nipomo,California
Aircraft
Givens Predator
Total Flight Time
2400+ in rotorcraft
It would be helpful if you would reveal what happened to your last engine, what engine you have now and what sort of gyroplane it is.

How you managed the wiring and sensors would also be helpful.

Often a leak in the inlet system (throttle body to engine) or a bad vacuum hose will cause a fast idle.
 

Butch

Newbie
Joined
Jun 18, 2020
Messages
67
Location
Jackson Ca
Aircraft
Bensen Gyro
Total Flight Time
50 hrs
GET A CAN OF CARB SPRAY CLEANER. WITH ENGINE RUNNING SPRAY AROUND BASE GASKET AND VACCUUM HOSES. IF YOU HAVE A LEAK IDLE SPEED WILL CHANGE
 
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