gtreng1

Hey guys,

I really need some help with the folks on the forums. Im pretty handy and usually can figure things out, but in this case Im stumped. I started with sputtering/misfiring on acceleration, lack in power. Replaced the fuel filter, then things got way worse. I barely made it to the dealer (no indy shops in my area that I trust).

The dealer replaced the fuel pump sensors (high and low), did a carbon cleanout service on the intake and valves since the manifold was off, and ended up replacing the high pressure fuel pumps since they were reading at 6bar rather than 25 bar. They also replaced a motor mount - apparently the sensor was bad and it is somehow connected to the fuel pump sensors, and the sensor needed replacement for them to diagnose the system. They comp'd the pumps, and motor mount, and I only had to pay for the sensors and intake service.

Picked up the car this morning, and the car accelerates normal now when lightly accelerating, but I can feel the shutter when I go beyond 50% throttle and the CEL briefly flashed. CEL light is off, so Im thinking its still misfiring.

Plugs are maybe 5k miles old - I did notice oil leaking from an intake man gasket into the plug hole. Not sure if this can cause the issue. Ill plan on replacing gaskets again. In the mean time, it feels like a fuel problem. The only thing I havent replaced is the low pressure fuel pumps.

Is there any way to troubleshoot the fuel pumps more? Dealer couldnt completely solve the problem.I do have Rosstech and will hook up again. Most likely the low fuel pressure code is gone, but the misfire came back.

Thanks in advance for the help!

Grisho

Can you post the full scan with VCDS?