I am going to guess here but the poor running could be a leak in to the cylinder(s) as well as in to the engine compartment. Head gasket is my guess.

Answered by Bruce Hunt (expert)
3,803 answers provided

also, when I accelerate, there is often a very hard rumble to the whole vehicle

Response from hoosierpanic
1 question asked

unfortunately, that is my guess too.........I was hoping for something else

though, I know it's a lot, how much does a repair like that usually run?

Response from hoosierpanic
1 question asked

I really don't know. I would venture a less than $500 but there are things that could raise and lower that. Just a head gasket or head as well, etc.

Answered by Bruce Hunt (expert)
3,803 answers provided

thanks for your info

someone else told me that if the coolant leaks into the cylinder, it could scrap the engine any truth to that?

thanks again for your help

Response from hoosierpanic
1 question asked

Definately. If you get coolant on top of the piston it can lock up that cylinder and bend a connecting rod. If the head gasket is bad, it needs to be replaced right away. From the sound of it, I would agree and say the head gasket has failed.

Answered by catch_15
1 question asked