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radiator hose engine inlet houseing won't seal?

douglas foster

Well-known member
Aug 18, 2005
minnesota usa
1984 C4 Gold coupe, Z51, 4+3 manual, BBS rims,
I cleaned out my raditor front,and replaced all hoses,thermostat ect: Put new therm. gasket and torqued down,but inlet leakes. when i removed old gasket there was no sealer on it. Should i use some now?
Most likely the T-stat hsg. is warped or cracked. Easy fix is to purchase a new O-ring designed T-stat housing and install. Be careful when you tighten the bolts as you can warp or crack these also. I always put a flat washer under the head of the bolt even though it not suppose to require them. Tighten down to snug and 1/4 turn of the bolt and you are good to go. No sealer required with o-ring type t-stat hsg. and it is reusable.
Are you sure you have the thermostat installed the right direction? Also, it takes very little off center of the thermostat to cause the housing not to seat right.

That is one beautiful looking 84!


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