3.5
Section 3
Troubleshooting
3
Air escaping from crankcase breather ...................................................... Rings or cylinder worn.
Air escaping from exhaust system ............................................................Defective exhaust valve/improper seating.
Air escaping from carburetor.....................................................................Defective intake valve/improper seating.
Gauge reading in “low” (green) zone ........................................................Piston rings and cylinder in good condition.
Gauge reading in “moderate” (yellow) zone............................................Engine is still usable, but there is some
wear present. Customer should start
planning for overhaul or replacement.
Gauge reading in “high” (red) zone ..........................................................Rings and/or cylinder have considerable
wear. Engine should be reconditioned or
replaced.
Leakdown Test Results
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