I just recently acquired a 1996 Pontiac Grand Prix SE 3.1L V6, 100,000 miles. The car has been sitting for a year with out being started. Of course now the battery is dead and I am looking at getting it ready to drive again. I have been told it may have a blown head gasket but at this point I can't really tell. The only thing that may back that up is the fact the oil looks like milk, however that just may be an oil additive or something of the sort. My main question is beside changing the oil and replacing the battery, what other things should I check, change, or replace since this car has been sitting for so long with out being started. Any assistance you can give is greatly appreciated.
First drain the fuel and put new fuel in, check the sparks and wires. Next clean all battery terminals and check the battery. Then change the oil, and put fresh in. Then disconect the coil and crank the engine to lube it up for about 10 seconds. Then hook up coil and try and start it if it runs great job, if not post back.
To check the headgasket, perform a compression test.