missfire

perks · April 27th, 2008, 09:37 PM

i have a 2000 gt, which was running fine until i took on a 600 mile trip. i noticed that when i gave it any decent amount of throttle, the engine would start bogging out. i replaced some dryrotted vacum lines but that didnt fix the problem. i eventually got an engine light and when i plugged it in i got a cyliner 8 missfire, which was what i had considered in the first place. today i pulled the cylinder 8 cop out and was splashed with a bunch of liquid. when i looked down in the port was filled with a few inches of coolant. this pretty much explains the missfire, im guessing the cop is fouled out now, but now i need to figure out why there is coolant there. are there any waterjackets running next to that port through the head? im wandering if i have a crack in the head or not? theres no evidence of anything leaking above the cop, so i guess im trying to figure out if im going to be screwed into changing the head or not. any help would be awesome.

TurboLX · April 28th, 2008, 08:58 AM

coolant inside piston?

Headgasket...

Racinjason81 · April 28th, 2008, 08:05 PM

break out the coolant pressure tester and go from there.

perks · May 1st, 2008, 04:25 PM

theres no coolant in the combustion chamber so im pretty sure its not a headgasket. im thinking that theres a bad o-ring in the intake manifold, so im going to tear that off this weekend and replace all the gaskets and o-rings. hopefully this works, thanks for the advice

Racinjason81 · May 17th, 2008, 11:10 AM

is there a coolant hose over #8 spark plug

Rico-mofos · May 17th, 2008, 11:13 AM

head gasket

April 27th, 2008, 09:37 PM	#1
perks Newbie Join Date: Jun 2007 Posts: 3	missfire i have a 2000 gt, which was running fine until i took on a 600 mile trip. i noticed that when i gave it any decent amount of throttle, the engine would start bogging out. i replaced some dryrotted vacum lines but that didnt fix the problem. i eventually got an engine light and when i plugged it in i got a cyliner 8 missfire, which was what i had considered in the first place. today i pulled the cylinder 8 cop out and was splashed with a bunch of liquid. when i looked down in the port was filled with a few inches of coolant. this pretty much explains the missfire, im guessing the cop is fouled out now, but now i need to figure out why there is coolant there. are there any waterjackets running next to that port through the head? im wandering if i have a crack in the head or not? theres no evidence of anything leaking above the cop, so i guess im trying to figure out if im going to be screwed into changing the head or not. any help would be awesome.

April 28th, 2008, 08:58 AM	#2
TurboLX MM Ninjas! 1990 Mustang LX Turbo 8.675 @ 165.91 Join Date: Oct 2006 Location: New York Posts: 7,925	coolant inside piston? Headgasket... __________________ (Wiring Diagrams For ALL Mustangs And OBDII/Generic DTC Available. PM For Info) FORD 2.3 FORUMS

April 28th, 2008, 08:05 PM	#3
Racinjason81 Hardcore Enthusiast Join Date: Feb 2007 Location: New jersey Posts: 1,187	break out the coolant pressure tester and go from there. __________________ Speed kills drive an import and live forever. 1991 LX 5.0 H/B 1990 T-BIRD SC

May 17th, 2008, 11:10 AM	#5
Racinjason81 Hardcore Enthusiast Join Date: Feb 2007 Location: New jersey Posts: 1,187	is there a coolant hose over #8 spark plug __________________ Speed kills drive an import and live forever. 1991 LX 5.0 H/B 1990 T-BIRD SC

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May 1st, 2008, 04:25 PM	#4
perks Newbie Join Date: Jun 2007 Posts: 3	theres no coolant in the combustion chamber so im pretty sure its not a headgasket. im thinking that theres a bad o-ring in the intake manifold, so im going to tear that off this weekend and replace all the gaskets and o-rings. hopefully this works, thanks for the advice

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