Tuesday, November 18th, 2008 AT 11:48 PM
Yes I have a 1996 pontiac firebird. The engine was running great and then one day it started shaking. I took it to the mechanic and they said it was a misfire in the 6 cylindar of the engine. I had that fixed and then a couple days later the engine started smoking when I was parked. I opened the hood and the radiator cap had a crack in it. I took it off and replaced it but there is a brown sludge on the dipstick for the coolant. Is this a blown headgasket or not. Thats what a friend said it might be.

