Other engine troubles
- Author: Linda (---.wstcmp.ku.edu)
- Verified User: mycider
- Date Posted: 05-07-08 22:41
OTHER ENGINE TROUBLES
Irregular running because
(1) Ignition cables loose or damaged.
(2) Engine gets too hot, causing fuel vapor bubbles to interrupt fuel supply.
(3) Contact breaker points oiled or burnt.
(4) Supporting pin for contact breaker arm worn.
(5) Spark plug or connector or ignition armature defective.
Engine four-strokes and does not accelerate because
(1) Carburetor flooded due to dirty or worn needle.
(2) Float is leaking.
(3) Exhaust port is clogged with carbon.
(4) Carburetor not correctly adjusted or jets loose.
(5) Air cleaner dirty.
Engine knocks while running at full throttle under load because (1) Too much engine advance.
(2) Excessive carbon deposit in the combustion chamber.
(3) Cooling fins dirty.
Engine backfires or spits into carburetor because
(1) Engine does not get sufficient fuel.
(2) Spark plug glowing due to wrong heat value.
(3) Spark plug bridged, dirty, or vitrified.
(4) Engine getting wrong air.
(5) Glow ignitions.
Engine does not idle because
(1) Throttle valve stop screw incorrectly set.
(2) Control cable for throttle valve incorrectly set.
(3) Ignition armature damaged.
Engine consumes too much fuel because
(1) Gas tank, fuel valve/petcock, or carburetor leaking.
(2) Jet needle or needle jet too worn.
(3) Jets too large.
Engine does not accelerate smoothly because
(1) Low engine power (see above somewhere).
(2) Clutch plates worn.
(3) Clutch plates glazed due to overheating by two people riding moped, too high idle speed, insufficient or wrong type of transmission fluid used.
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