The last 2 flights I have had a very sticky throttle near the idle position on approach to land. I have an O-320 with Vetterman exhaust and Robins carb heat muff on one crossover. The aircraft has 15 hours total. I applied carb heat before I reduced power for landing. I went to add some power and the throttle was stuck but more force broke it loose. I tried to reduce power just before touchdown and the first time could not. The second time I used more strength and the throttle went to idle. After roll-out and clear of the active, the throttle was smooth as ever. Procedure here at CYXX, inbound aircraft to be at 2000 ft. Field elevation is 200 ft. Altitude to be maintained until altitude restriction cancelled or on final approach. I suspect my problem is carburetor ice. I removed the cowls. I can see nothing that would explain the problem. I do not get much of a manifold pressure drop when I check the carb heat on run-up. I get a substantial drop if I check carb heat in cruise.
Outside temp was about 70F. Did not check the dew point but there was mist and reduced visibility. Now the throttle is smooth like a new one and does not get sticky with friction applied. Anyone else had this problem?
Ray
Outside temp was about 70F. Did not check the dew point but there was mist and reduced visibility. Now the throttle is smooth like a new one and does not get sticky with friction applied. Anyone else had this problem?
Ray