4thGENRETARD

I've noticed missfires at idle but no SES, and after a 150mph run at Wot, I saw a big plume of whitish, greyish smoke when I let off the gas which quicly dissapeared and I continued at 100mph for another 20 miles with no more excessive smoke.
Any ideas, are the two related????

unit213

Two questions:

1. Can you ATAP it?
2. Were those nitrous runs?

wrencher

iTrader: (2)

How many miles at WOT??/How long at WOT?
Thats asking alot of any stock? motor(150/WOT)
Plumes of smoke = bad ,might have lost a few lbs of compression in 1 of 'em?

Got Me SOM

iTrader: (2)

sounds like a possible head gasket problem.

#41

check the oil for water

4thGENRETARD

Unit213 I can run it on an analyser, and no that was a NA run.
GOT ME SOM Besides coolant in oil, any other way to check for blown head gasket? Would that cause hickups and missfires at idle?
The light gray smoke only came on deceleration and for just a second then nothing.This was the first time it happened too.
Could this just be unburned fuel from a missfiring cylinder?

Bullit

wrencher

iTrader: (2)

Now after that the car is missing/rough at idle?
Does the car set a miss-fire code?
Check the plugs, & do a compression test.
If it blew a head gasket it would either be using antifreeze, or loosing compression in a cylinder or 2.
They usually make themselfs pretty obvious.

unit213

Definitely do a compression test. White smoke (coolant) is usually a sign of a blown head gasket. Maybe a leak down test.

Jorday

I would check the oil and plugs. Do a compression test while you have the plugs out.

4thGENRETARD

Worst case and I do have a blown gasket; what gasket would you recommend besides the stock carbon ones.
Also will the plugs show any tale tale signs (like color, smell, deposits) any pics??
And finaly, would white smoke show itself only at WOT or also at idle, upon start up?