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Discussion Starter · #1 ·
I just installed an oil catch tank system in my 1989 180SX. The reasons were varied- 1) blow by after hard running, 2) the dislike of oily film lining my intake piping and 3) the discovery of sludge-like gunk in my intake manifold. This leads me to my question- what is the best way to clean the tar-like deposits from the inside of the manifold without removing the manifold from the head?

I will eventually remove the manifold in order to do some headwork for my S14 turbine install, but that is a few months away after I've saved some more money up for fuel pump, injectors, AVC-R, metal head gasket and Z32 AFM.

By the way, the oil catch tank works great!


CA18DET Wizard
1,366 Posts
Spray with cleaner as much as you can while trying to keep the engine running!
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