Any help would be appreciated



2004 E55
THE FOLLOWING PARTS ARE NEW:
Spark Plugs
Wires and Coil Packs
Injectors
I did a smoke test and found smoke leaking from under the supercharger, rear passenger side.
any idea what is could be?
thanks







Second statement erroneous. That is for checking engine oil level with aftermarket dipstick.
Transmission fill tube located behind throttle body.
Throttle body has two lines connecting to the valve cover vents to pull oil vapors into the intake.
Motor oil check tube has the arrow pointing to it left center. Transmission fill tube lower left partially hidden behind the hoist point.
Lines from throttle body to valve covers attach at the points indicated in the circles below.
Easiest to check by removing the two surge tanks. Have a piece of cardboard and punch holes in which to place the bolts as you remove them; the bolts are various lengths. Replacement gaskets are inexpensive.
Last edited by bbirdwell; Feb 28, 2026 at 10:25 PM.



Second statement erroneous. That is for checking engine oil level with aftermarket dipstick.
Transmission fill tube located behind throttle body.
Throttle body has two lines connecting to the valve cover vents to pull oil vapors into the intake.
Motor oil check tube has the arrow pointing to it left center. Transmission fill tube lower left partially hidden behind the hoist point.
Lines from throttle body to valve covers attach at the points indicated in the circles below.




Also take a look at the connection between the Y-tube exhaust of the supercharger where it feeds into the passenger-side surge tank. It is a very heavy duty sleeve connecting the two but always possible it was not fitted correctly as it is in a PITA location.
I'm referring to the outlet just to the left of the MAF sensor in the photo below.
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Also take a look at the connection between the Y-tube exhaust of the supercharger where it feeds into the passenger-side surge tank. It is a very heavy duty sleeve connecting the two but always possible it was not fitted correctly as it is in a PITA location.
I'm referring to the outlet just to the left of the MAF sensor in the photo below.
Yeah gonna have to pull the supercharger and have a look thank you for the visual sir
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If you do plan to ever remove the supercharger, I really recommend an engine hoist. That SOB is heavy...






