Shake at Idle.

jheiv · November 19, 2003, 03:55:33 PM

I had this shake when I at idle and also alot when I got to a certain RPM (around 4000). Anyway, I changed my plugs (AC Delco Rapid Fires) and wires (Borg Warner) and I still have this shake. :evil: Its sucks, I don't get any combustion in a cylinder and it kills my gas milage, not to mention the gas smell in my passenger compartment now. Any ideas? I'm pulled and reseated my wires a couple times now both on the plug and on the coils, Thats not it. Any Ideas?

TGPRobNY · November 19, 2003, 06:24:36 PM

I would check the coils and maybe you have a crossover leak as well since it's a real common problem that often goes overlooked.

RareGMFan · November 19, 2003, 06:24:55 PM

I'm pretty sure you shouldn't be using the Rapid Fires, because they are all platinum now, and that's no good for the TGP motors.

R Dubya · November 19, 2003, 07:14:31 PM

I'm running platinums in my car, it runs fine. I know it's against advice, but from what I understood, it was only because they are a much poorer conductor of heat. Is there any other reasons? They don't break off do they?

RareGMFan · November 19, 2003, 11:02:54 PM

Quote from: RyanThey don't break off do they?

Actually, I think they do :shock:

R Dubya · November 20, 2003, 06:10:28 AM

I'm not using the rapid fires.. #8's.. but the newer version. I'll look into that.

The Burning Rom · November 20, 2003, 07:42:21 AM

Quote from: 6000STE/AWD
Quote from: RyanThey don't break off do they?

Actually, I think they do :shock:

They don't break off. :roll: The platinum in them burns out much faster than it should due to the wasted spark (distributorless) system that GM uses.

RareGMFan · November 20, 2003, 08:40:21 PM

Quote from: The Burning Rom
Quote from: 6000STE/AWD
Quote from: RyanThey don't break off do they?

Actually, I think they do :shock:

They don't break off. :roll:

Sarcasm, for crying out loud.....SARCASM! :roll: :P

jheiv · July 08, 2004, 12:34:44 AM

broken pushrod causing zero compression on 5th cylinder power stroke... causing fowling of plugs and flooding. thanks.
--just cleaning up my posts

R Dubya · July 08, 2004, 08:59:52 AM

You're lucky you don't need anything else.. lol. I found a broken pushrod in my 89 TGP, replaced it, still did the same things.. finally did a compression test and found that the cam lobe had worn down on the intake lifter on cylinder #5. Now I have to do a rebuild. :shock:

maximage · July 08, 2004, 11:49:26 AM

Could be like my old Surpa nad find a hole in the piston and a warped head..

These engines take a pretty good amount of abuse. I'm impressed so far.