I posted this before but cant find the thread. I changed the plugs last sat because of a miss it had. I had one loose plug. Would that cause much of a miss. It was finger tight with a socket. Also i found that the two middle plugs on the driverside of the engine had plugs with white lectrodes. All the rest were black. Is this a sign of a bad head gasket. They were not bright white but definatly tinged that color. SInce i have true duald could i be able to smell the difference on either side of the truck.

 

White is lean, black is rich or oil-fouled if it's heavy deposit. Tan is just right.

 

your injectors might not be spitting enough gas in those cylinders.

and the opposite on the black plugged cylinders

 

Ok how would i end up with 2 lean and 6 rich? I dumped a can of Sea foam in it this week. I'll have to do another can in the motor itself. This stuff is awsome! So i probably have dirty injectors.

 

Like I said.. Injector inconsistancies.

 

I would have to think coolant leak if side by side.

 

I can't tell if its leaking into the motor. I am loosing coolant but every week i keep blowing the line off the overflow tank. It just will not stay on. I have used many hose clamps and silicon but it keeps falling off.

 

Maybe the reservoir cap is gummed up and you're getting too high of pressure in there??

(thus pushing the coolant past the cylinderhead gasket and into your combustion chambers?)

Does your oil look like coffee and cream??

 

No the oil has always been normal and with great oil pressure. Its a compleatly sealed tank that the line goes in the bottom. Probalbly the same as yours.

 

It can be leaking in between those two cylinders. Combustion pressure can be going in the cooling system without leaking into the oil.

 

Tim
When I was having trouble with my Cougar it would every once in a while blow the coolant out of the tank, but my temperture would spike also. turned it had a very slightly blown head gasket. I toyed with it about 2 months before it started steaming out the exhaust.

Good Luck

 

Can't bad wires also make it fire lean? My friend's probe was skipping under load and I changed the plugs and wires, every plug except 1 was tan. The other one was white. If coolant is being put into the combusion chamber, you'd see it out the exhaust as white smoke.

 

I haven't seen any smoke out the back. I changed the wires in november with napa lifetimes. I want to get a set of JBA header wires. I keep cooking the last one on the pass side.