[gonzoblazer]

viggy is right. check your whole cooling system 1st, heat hoses,radiator,cap, upper-lower rad hoses, water pump,water pump in-outlet hoses. after all that checks out, there is a special tool you can hook up to the radiator. no idea on cost. i'm plumbing and heating so i had access to make my own. but viggy is also right about the spark plug check too. as for changing the intake gaskets, it is easy but give yourself time. it can be done in a day but i took 2 just so i wasn't rushed. i cleaned the snot out of everything i could get my hands on. there are very good DIY threads on this forum for changing your intake gaskets(i think the guy that posted it had a red 97 jimmy too).