Postby Red.Hit » August 5th, 2015, 1:08 pm
Hey everyone, I know the 4g93 is an old baby right now, but anyway, I build one 4g93T GDI engine in my Mitsubishi Carisma. It normaly has the N/A GDI, but I feel like I needed some power. Sadly I had to use the ecu and (after some minor modifications) the whole wireing of the old engine; it is running now error free, after some work.
My problem is an high frequency noise like.. a bee or something. It appears only in idle, as long as I give the engine some load, it is gone. it seems to come from near the high pressure pump. Does anyone know what it could be?
The timing belt is new, the engine oil is new (I used 0w30 Aral super tronic g with ACEA A3), and the whole engine seems to be dry, and in good conditon. Even the hydros seems to be real quiet.