After refurbishing top-end and about 500miles later i get this yellowish discoloration only on this particular spot, much less on right side.
It looks like next to vacuum line to fuel pressure regulator.
Vacuum lines were replaced with new OEM, are clean inside, FPRs are old, suction seems to be the same on both sides,
engine idle is almost perfect.
What could it be?
It looks like next to vacuum line to fuel pressure regulator.
Vacuum lines were replaced with new OEM, are clean inside, FPRs are old, suction seems to be the same on both sides,
engine idle is almost perfect.
What could it be?
Yellowish stain on intake manifold
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