Should I Use Gasket Sealer On A Combination Intake And Exhaust Manifold Gasket
Posted in Air Intakes System | Asked on Dec 3, 2011
I am replacing the cylinder head on a 1991 Dodge Caravan with a 2.5 liter engine non turbo. The manifold gasket in the head set appears to be made of graphite over metal. The repair manual is not clear on whether I should use gasket sealer or not. If I should then what sealer should I be using? The gasket seals both the intake and exhaust manifolds. Thanks for the help.
There are 8 Answers for "Should I Use Gasket Sealer On A Combination Intake And Exhaust Manifold Gasket"
No
silicone will damage O2 sensors
use what the service manual says to use
No. Unless, a gasket specifically calls for gasket sealer, never use it. Most modern gaskets are designed to be installed without any kind of sealer. More often than not, adding sealer anyway will CAUSE them to leak.
Nope.
If you are reusing a gasket more often than not you use a sealer especially around the intake ports. Use gasket sealer(automotive) not silicone sealer for bathtubs/kitchens. Ask in the automotive parts store where you buy the compound.
No you can use a little weather strip adhesive (yellow stringy stuff)to tack the gasket to the intake or exhaust header to hold it in place but other than that you shouldn’t need it. And always remember you always use the gasket sealer or adhesives to the part not the block.
No don’t use any sealer at all on it,there should have been a paper that came with the gasket set and on it it tells whether or not you need to use anything with it,but you never have to use anything normally with these,they will seal there self up ,but read the repair manual on it and look for the paper in the gasket set,it should be accurate for your vehicle,good luck with it.
Use a sealer known as copper coat. get at parts store. it fills imperfections in metals and does not harm o2 sensor. do not use any kind of silicone or anerobic type sealants as the heat will cause them to ignite.
Use new gasket it will save you on the long run.Never use sealers on new gaskets, that’s why they are called the gasket because they are sealing on their own with the help of the clamping force provided by the nuts or bolts that clamp the parts together, thus sandwiching the gasket in between and creating a groove which provides the air tight seal. Sealants are just cheaper quick fixer upper substitute that never quite do the job 100%.