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post #1 of 3 (permalink) Old 07-28-03, 12:04 PM
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confused Valves wide open

Our customer drove her 1997 Explorer, 108,000 miles, 3/4 to mile & died on her would not start. It had no spark so we put coil pack in it; then no compression & we fould ALL the VALVES were PUMPED UP stuck WIDE OPEN. We are replacing the valves, has anyone expereinced this problem or knows why the valves would be PUMPED UP and stuck WIDE OPEN> Would like to know why, so we will not experience further down the line to prent this from happening again.

Please respond back with any ideas.

Doug Wolvington
Doug's Pit Stop
98 Benton Road
bossier City, LA 71111
(318) 213-6745

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post #2 of 3 (permalink) Old 03-04-08, 11:32 AM
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Re: Valves wide open

Anyone? I'm having the same problem...
rohan1984 is offline  
post #3 of 3 (permalink) Old 03-04-08, 12:36 PM
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Location: Manitowoc, WI
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Re: Valves wide open

Pushrod motor or overhead cam motor ?

I had a '97 with the pushrod V-6... never a problem in 160,000 miles... gave it to my daughter, and she's still driving it. It's past 170,000 now, still no problems.

It had hydraulic lifters, but if I recall (from the manual.... never needed to open it up) correctly, there was a bleed hole that limited how far the tappets could extend. If the bleed hole was plugged, that would cause them to pump up too far.... but happening to all 12 of them at the same time?????

Any crazy stuff like "cleaning it out" by running diesel fuel in the crankcase done recently?

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