My Bonne is messed!!! *resolved with new question* - Page 3 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 08-05-2006, 12:24 AM   #21
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this is off subject but do u drive the 89 still?
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Old 08-05-2006, 12:48 AM   #22
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I think a gray or whitish coating can be considered normal. Even light brown. I am wondering about the difficulty you had in removing the plugs. Made me wonder if you might have gotten a little off-axis when you were installing them, and cracked one or more of the plugs. I always use anti-seize compound on the male threads of plugs and I use a thread chaser (K-T sells them for a few bucks) to make sure the threads in the head are clean. You should be able to turn them in by hand using a plug socket and extension and do the final tightening with a handle.

Sometimes, when a problem appears right after a plug change, it is because the wire was damaged when it was removed from the plug. I like to use silicone grease on the metal clip and on the silicone boot, so the boots come off without harm in the future.

This is way more important with aluminum heads, but it can help with our cast iron heads, too.
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Old 08-05-2006, 12:01 PM   #23
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It'* hard to tell much from the picture because it'* over exposed. The 2nd & 3rd plug may be from a weak coil. Try checking the coil resistance. Techinfo>electrical>powertrain
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