Leakdown tester homemade engine cylinder troubleshooting tool
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#Insert the modified plug and apply 60-80 psi air to the cylinder. Be certain not to use so much air that it turns the engine. | #Insert the modified plug and apply 60-80 psi air to the cylinder. Be certain not to use so much air that it turns the engine. | ||
#With air pressure in the cylinder, listen: | #With air pressure in the cylinder, listen: | ||
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| − | + | *If you hear air bubbles, it may be a leaking head gasket. | |
| − | + | *If you hear air in the exhaust, it may be a leaking exhaust valve. | |
| − | + | *If you hear air coming up through the carb, it may be a leaking intake valve. | |
| + | *If you hear a hissing noise from the oil fill tube, or the dipstick tube, it may be a piston or piston ring problem. | ||
This simple homemade device can save a lot of time in diagnosing a problem. | This simple homemade device can save a lot of time in diagnosing a problem. | ||
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