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burning exhaust valves?

dru1r

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December 26, 2000
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I have a 92 explorer and I have burnt an exhaust valve twice. The first time in the scond cylinder on the pasanger side so I got the head redone. Now I've burnt the exhaust valve in the third cylinder on the same side, both times it is cremating the sparkplug it seems like from heat, and the rest of the cylinders are running hot it seems, but the car does not run hot. The second time happened within a month of the first. Does anyone have any ideasas to cause?
 






Hi dru1r,
Welcome to the site.
What brand and type of plugs are you using? Maybe going to a colder plug might help. when was the last time the wires were changed?
 






burned valves?

Have you checked to see if you have any kind of exhaust leak on that side of the truck? Some times one close enough to the head will cause burnt valves.
Might want to check.
Good luck
 






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