Chicago Electric 65414 Engine Troubleshooting, Engine System Possible Cause Possible Solution

Engine Troubleshooting

Problem: Low power output. Engine bogs down or stops under load. Excess exhaust or unburned fuel in exhaust. See chart below:

Engine System	Possible Cause		Possible Solution
Ignition System	Incorrect Ignition Timing.		Adjust Engine Advance Angle.
Fuel Supply System	1.	Air in fuel line or fuel line clogged.	1.	Purge air or clear obstruction.
	2.	Main Jet not adjusted properly.	2.	Readjust Main Jet.
	3.	Metering Jet or Main Jet clogged.	3.	Clean and Readjust.
	4.	Fuel Cock clogged.	4.	Clean as needed.
	5.	Carbon Fouling in Combustion	5.	Clean out Combustion Chamber.
		Chamber.
	6.	Clogged Air Filter.	6.	Clean or replace Air Filter.
	7.	Intake Manifold leaking.	7.	Repair or replace as needed.
Poor Compression	1. Worn Piston, Piston Ring or		1.	Check compression and wear
		Cylinder Wall.		tolerances, repair or replace as
				needed.
	2.	Leaking Cylinder Head Gasket.	2.	Check compression, replace as
				needed.
	3.	Worn Valves, Valve Seats, Stems	3.	Check wear tolerances, repair or
		or Valve Guides.		replace as needed.

Problem: Engine does not start or does not run smoothly. See chart below:

Symptom	Possible Cause		Possible Solution
Engine is Pinging	Excess wear of:		Check wear, replace as needed.
	• Piston, Cylinder Wall or Rings.
	• Piston Pin or Piston Pin Hole.
	• Connecting Rod Wrist Pin.
	•	Crankshaft Roller Bearing.
Abnormal Com-	1.	Combustion chamber carbon	1.	Clean out Combustion chamber and
bustion or engine		fouling.		spark plug.
running hot or	2.	Dirty or old gasoline or oil in gas.	2.	Drain gas, clean out fuel filter and
excess smoking.				replace with fresh gas, minimum 91
				octane premium unleaded gasoline.
Engine does not	1.	Engine Switch in OFF position.	1.	Move Switch to ON position.
start.	2.	Water in Carburetor Bowl.	2.	Drain carburetor Bowl, clean Fuel
				Filter.
	3.	Spark Plug gap not correct.	3.	Clean and re-gap plug at 0.030”.
				Replace plug if needed.
	4.	Incorrect Ignition Timing.	4.	Check timing and adjust.
	5.	Damaged coil or ignition wires.	5.	Check for damaged wires, test output.
	6.	Low Oil level.	6.	Check oil level, top off as needed.

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