I am having a problem and was wondering if someone could shed some light on it.
I have a build-up of gritty residue about 1/8" thick in areas in part of my engine bay. The majority of it is in the 1/4 of the engine bay on the driver's side near the oil dipstick. It covers the front of the engine (that black metal case right behind the radiator on the engine itself), the area near the front right fuel injector, the side of the battery compartment....that should describe the location well enough.
Possible causes- recent mods -
I recently did the perrin fuel rails, upgraded STi injectors, in-bay fuel gage install, and perrin catch can all in that zone. (also did Walbro and VF30 which aren't in proximity of course)
How did I notice the problem? The car was running fine...I just simply opened the hood to check the new fuel gage and it read 10psi instead of the unsual 41 or so. "shizz"..I thought. I fiddled with the gage and pretty much came to the conclusion that I should get it out of there and put the stock fuel hose back in without the gage because that could have been the cause of all the gunk everywhere...and since the car was running fine obviously I had enough fuel pressure...it must be the gage that is broken right?
Can fuel that is slowly leaking cause this kind of buildup of gunk in an engine bay? Seems like it would just evaporate if there was a small leak.
Does an oil leak cause this kind of buildup? It doesn't feel or smell like oil....it is like black sand..and comes off powdery on my finger.
Could it be any other fluid? Could I have been driving behind a truck who was spewing gross stuff out and it just went into my radiator and all over the engine up front?
Could a perrin oil catch can that isn't installed properly do this?
God this is getting long....sorry ..just want to diagnose this. Just want to get some sort of reassurance that it isn't the sign of something horrible (like I am running on 3 cylinders because I disintegrated one) or I didn't get the manifold back on correctly after the fuel rail install and ther eis spew coming from that seal.