98 bonneville will not start - 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 08-10-2011, 07:36 AM   #21
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Old 08-10-2011, 08:45 AM   #22
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Ok so now Im SOL again. Ive replaced the plugs and wires as well as that regulator, started up and ran great, I let it run for a bit then took it down the road, It bogged down a couple of times then just shut off and wont start again...Im at a complete loss now (getting some white/bluish smoke again from exhaust, but oil is clear)
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Old 08-10-2011, 12:36 PM   #23
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now it sounds like you have a cracked intake manifold, just about every na 3.8 has had to replace it, i would check out the plugs and see if anything comes out if you hit the starter with the plugs removed.
the intake man. is a plastic composite that breaks down with heat and time and ends up leaking and or cracking

https://www.gmforum.com/mechanical-134/uim-lim-gaskets-l36-297702/

that is the gaskets you would likely have those and the manifold to replace
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