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wrangler towed in gear

That is not a good thing...

Anyway the pump quitting sounds like it is a coincidence or maybe when the head gasket blew, the water went low and the pump bearings burned out would be my guess.

I would be pulling the plugs to see which one is really clean. This clean one(s) will be the one with water in it.

A compression test is in order. Testers are cheap and it can tell you if it is a toasted head gasket or worse the rings or a piston broken too.

The head has to come off anyway by the sounds of it so doing a wet/dry compression test can tell you about the rings usually. If the rings are toast, the engine will need a rebuild

White smoke is water, blue is oil, mix them and get bad news gray...

Mike

86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 88 Cherokee 235 BFG AT's

snipped-for-privacy@pobox.com wrote:

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Mike Romain
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dgassocdelete

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dgassocdelete

Mike and John, Here's what we found. We bought an Actron compression gauge and checked the compression of each of the cylinders today:

#1 151 psi #2 155 psi #3 152 psi #4 156 psi

We cranked the engine about 8 times per check and the meter would go to the maximum reading after 2-3 revolutions.

We took pictures of the plugs and posted them here if you want to have a look. I didn't see any oil today but on Sunday the #2 plug appeared to have some oil on it:

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As we tested I watched the other 3 open plug holes and didn't see anything coming out.

What do you think of those readings?

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dgassocdelete

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L.W.(ßill) Hughes III

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L.W.(ßill) Hughes III

Thanks, I'll pick some up. This has always run rich, and got 8 mpg before any of this happened. We were hoping the work we'd done previously had helped. The engine in this Jeep is an odd one, Pugeot I think someone said. The oil filter doesn't match what's in all the filter books, wrong size. Fram says it's a PH3985, but it takes a WIX

51040. I d> Anytime you're within ten pounds of each other, the rings are OK.
Reply to
dgassocdelete

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L.W.(ßill) Hughes III

IFAIK the gas V6's were GM products, while the short-lived turbodiesel may have been a Peugot...

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Matt Macchiarolo

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L.W.(ßill) Hughes III

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twaldron

"And in other news, Hell froze over today...."

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Matt Macchiarolo

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RoyJ

Yesterday I bought the RC12LYC plugs and replaced the old ones. We started it up and let it run, thinking unless something pretty weird was going on there probably wasn't a head gasket blown or crack in the cylinder given the compression readings we observed. It smoked, but not as bad as before. After running several minutes the smoke slowly disappeared. Took it for a couple of mile test drive and it's got the same power it had, no smoke or leaking.

I don't know if the smoke was from whatever was left over in the engine after the tow or what. I had been apprehensive of running it very long, thinking something else was blown and not knowing what damage I might be doing.

Thank you for the tip > Anytime you're within ten pounds of each other, the rings are OK.

Reply to
dgassocdelete

I was away so am a bit late on this one. Those are good readings as you found out. Likely just junk left from the dragging burning off. ;-)

That gas mileage is really bad though.....

I just checked mine again on a 300 km each way trip and got a little better than 11L/100km or over 23 US mpg.

This is in an 86 CJ7 fully loaded running at about 65 mph.

Mike

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Mike Romain

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