what symptoms do you look for to know for sure if a headgasket is bolown on your car or not, what are some checks you can do?

 

your blowing alot of white smoke out of the back of your exhaust

 

white smoke out the exhaust, overheating, coolant bubbling in the reservoir, coolant mixing with engine oil, coolant and/or oil leaking externally between head and block.

any of those symptoms can be a bad head gasket.

 

the only symptom of the ones listed above thatis being experianced is alot of white smoke out of teh tailpipe everthing else seems to be good

 

yup, it could be toast.

 

if it only smoking it could be a valve seal

 

Hunting rpm

 

where are th evalve seals located are they difficult to chsange?