Question about 1989 Jeep Comanche

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74 dodge 318 sudden massive blow-by

While driving my 74 camper up long fairly steep grade started getting blow by made it 38 miles used 4 quarts of oil . no oilfouled plugs. need to drive 88 miles home did i blow the rings out ?still have oil pressure

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  • kyred Nov 24, 2008

    thanks not a leak .oil is in breather and massive blow by probably rings i dont know how this got listrd as a jeep its a dodge camper on a 1 ton van frame.thanks again

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It does sound like a broken ring, but it could be a head gasket blown in a way as to only leak oil and not coolant. Also, are you sure your not just leaking the oil (probably from the rear seal if you're on a continuous grade) or could the oil filter have developed a hole (I had old jeeps that when the motor mounts wore, the oil filter would touch the frame).
To rule out the rings, a 'wet' and a 'dry' compression test needs to be done. This means checking each cylinder with a compression tester and recording the readings (dry test). Then repeating this procedure with a spoonful or so of oil in each cylinder. If the results are drastically different, you need rings. I would remove the torque converter cover though and check for leaks inside. (this is the cover on the bottom of the transmission 'bell-housing' facing your engine's oil pan. Good luck!

Posted on Nov 24, 2008

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