1974 F100 Burning Oil

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04-24-2013, 08:04 PM

JohnKennedy

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1974 F100 Burning Oil

After 15 minutes my truck starts burning oil out the exhaust - any suggestions or does it need a engine rebuild ?

thanks

Ford F100
240 cid 6 cylinder
4 on the floor

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04-24-2013, 09:22 PM

devino246

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The two most likely causes are

1) Worn oil control piston rings
2) A clogged PCV system or bad PCV valve

Check over the PCV system to make sure it's not clogged. If it checks out, you'll want to do a compression test to check the condition of the piston rings.

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04-24-2013, 09:24 PM

redroad

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Quote:

Originally Posted by JohnKennedy

After 15 minutes my truck starts burning oil out the exhaust - any suggestions or does it need a engine rebuild ?

thanks

Ford F100
240 cid 6 cylinder
4 on the floor

Do a compression test or even better a leak down test on the motor
How to do Cylinder Leak Down Testing- Car Craft Magazine

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