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.

Rough acceleration, Died, Started, Blue Smoke, Died again...

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Old 08-26-2005, 11:36 PM
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Glad to hear it . I guess it wasn't that fuel pump anyway(lol)
Old 08-27-2005, 01:28 AM
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Default Help again!

Bad News...

After I got the oil changed and topped off the coolant, I started it up in the driveway, and it idled great for a little bit, revved it up a few times, it was smooth, oil pressure was great, etc... When I shifted into reverse and backed up a few feet, I looked back into a huge cloud of white smoke (couldn't place the smell of it, not coolant or oil?), so I drove it back forward. The engine was rough again, almost dying, and I parked it there and turned it off. My friend who was over said he heard some noises coming from the direction of the air filter box. I poked my head around for a bit under the hood trying to look for things, and when I tried starting it up again, the engine made a loud 'clink' and wouldn't turn over. I think I might be back to my original problem...

Thoughts?
Old 08-27-2005, 01:33 AM
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Try to start it in the morning. After it circulates a bit, check the oil and tell us what it looks like, even if you have to use a flashlight to look inside the front valve cover through the fill hole.

Same thing for you coolant. Level and what it looks like. If the oil looks too 'milky' or somewhat like chocolate milk, drain it immediately, and check back with us.
Old 08-27-2005, 11:16 AM
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My offer to assist you still stands.

I've done an UIM or two....It'* a piece of cake....3 beer job....if you drink as fast as I do lol.
Old 08-27-2005, 07:20 PM
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I replaced the UIM and lower intake gasket today, so I may have solved my problem, but the engine still won't turn over. Any suggestions to get it to crank?
Old 08-28-2005, 02:06 PM
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Told ya on the phone yesterday danny that I think it'* hydro locked...hewhehehehehe

Anyways....definantly get them plugs ripped out of there, clean them up, and crank the car over with out them. If you can get the car to crank then, crank it for about 5-10 seconds to make sure you got it all pushed out.

Toss your plugs back in, check your oil, and try to get it running. Leave it run for about 5-10 min (just to get a good amount of heat into the motor), and clean out the cylinders, and then shut it down and change the oil.

Also while it'* warming up, keep an eye out for new leaks.
Old 08-29-2005, 01:52 PM
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Okay, I've repeated the problem twice now. After replacing the UIM and upper/lower gaskets, I pulled the plugs out again, got the coolant out of the cylinders (it was in there from the UIM install), and turned it over again. Got it running, but then after a minnute or so, it starts chugging, and then dies (SAME thing as before). Same classic white cloud out of the exhaust the whole time it was running too.

My conclusion is that it just keeps getting hydrolocked, because there'* SOME leak somewhere that'* allowing the coolant to get into the cylinders. I've replaced the UIM and gaskets, the LIM looked very clean (no cracks), the compression test I ran on all the cylinders was fine (150-175psi)....

What else could it be?


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