Had the upper intake off yesterday and noticed that the number one runner was wet.It was not soeked but it was wet and so was the plenum gasket.All the others were fine.I could not really tell if it was oil or gas I would have to say gas cause it was not very dark.Is this normal.Any info would be great.
Oil or fuel in #1 runner
- Thread starter 90whitepony
- Start date
Michael Yount
Mustang Master
Since the injector is near the bottom of the runner - normally there wouldn't be any way for gasoline to be in the intake upstream of the injection point. Remember, the pcv vents the crankcase into the intake manifold. Over the years, oil vapors can deposit quite a bit of oil throughout the intake manifold - quite normal. Additionally, each time you crank up the car, especially when it's colder outside, condensate that has occurred inside the engine gets boiled off and it goes into the intake as well - water mixing with oil - creates some really yucky stuff. Most intakes will have some measure of that stuff coating their insides.
If you're not having any other symptoms - a little wetness in the intake probably isn't anything to worry with.
One thing to check is that sometimes coolant from the egr spacer can leak into the intake. Could that be happening? If so, perhaps one of your egr spacer gaskets has failed.
If you're not having any other symptoms - a little wetness in the intake probably isn't anything to worry with.
One thing to check is that sometimes coolant from the egr spacer can leak into the intake. Could that be happening? If so, perhaps one of your egr spacer gaskets has failed.
Michael Yount
Mustang Master
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