Cheers fellas! I am experiencing high speed glazing, #4 plug, 1990 YJ 4cyl
5spd, causing a miss. Anybody have any experience with this? Hotter plug? Thanks Jim 1957 CJ5 1990 YJ 2006 TJ Golden Eagle- posted
16 years ago
high speed glazing
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16 years ago
Usual suspects first, plug wires, new plugs, distributor cap and rotor. Then a compression test. If #4 is low, and a squirt of oil brings it up, then consider a hotter plug, maybe. I'll bet it is the plug wires.
Cheers,
Earle
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16 years ago
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High speed glazing can also be caused by a clogged fuel injector letting the cylinder lean out excessively. Might run a can of fuel system cleaner with the next tank. I like the Chevron Techron cleaner.
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Put in a new plug, glazed ones don't clean up well. And go one step colder. With glazing, heat is the enemy.
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16 years ago
Thanks Fellas! I knew you guys would have answers. Jim