Oil Consumption? - JeepForum.com

 
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post #1 of 4 Old 10-23-2013, 09:40 PM Thread Starter
Swampeast2
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Join Date: Sep 2013
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Oil Consumption?

My 1987 YJ 2.5 seems to be burning oil. The guy I bought it from apparently was a bit less than what I had hoped. It appears to be the valve stem seals, but how can I be certain? Is it better to just have the head rebuilt?

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post #2 of 4 Old 10-24-2013, 04:16 AM
bogleparsons
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How much is it burning ?

If it's not supposed to move and does use duct tape.
If it's supposed to move and doesn't use WD40
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post #3 of 4 Old 10-24-2013, 10:31 AM
superj
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put it in idle and then put a dollar bill over hte exhaust tip. if your exhaust is not leaking, and the valves are good, the dollar will rhythmically flap. if the dollar pops, you have burned valves.

if you have someone start it in the morning with you watching the tail pipe and blue smoke comes out at start up, the valve seals leak a little while sitting. it if smokes on deceleration, blue smoke, the valve seals are leaking.

if it smoke while driving or idling, all the time, and is blue smoke, the rings are not sealing properly and you will probably have low or bad compression on some cylinders or all cylinders

I don't feel like working on anything at this time so i sold my yj.
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post #4 of 4 Old 10-24-2013, 10:32 AM
superj
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and the start up is the first start up of the day, when the engine is cold. not always going to work on a semi warmed up engine so firs start up of the day is the best for that check

I don't feel like working on anything at this time so i sold my yj.
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