Paste Like Residue in Intake Runners?
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Paste Like Residue in Intake Runners?
I pulled the intake manifolds off last week to have them ported. Today I was preparing the engines to put them back on. In the intake runners for cylinders 7&8 on both engines (with the intake manifolds off) there is a strange heavy residue - the consistancy of Vaseline. It does not smell like gas and it doesnt smell like oil. My belts are old and there is a good bit of belt dust on the back of the seat. Could this be build up of belt dust mixing with the air/fuel and creating a slimy paste...
What is this? What is it from? Why is it only in the back two runners?
What is this? What is it from? Why is it only in the back two runners?