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durbans finest
10-06-2011, 05:11 AM
Howsit peeps,

Being away from the forum for a while now, having problems with my audi......

Anyone experienced this problem i am having. I recently took my car for a Dyno and they picked up that the car is running too lean (not enough fuel) right? So he could not increase or set the boost on the car. At the momemt the boost is at 0.5 bar but surpose to be 0.7bar. He advised me that he cannot increase the boost (to norm) as it would damage the valves. No codes are coming up on the scan but he said the fuel is too lean. He had a tester plugged in the exshaust. The question is, is it the fuel pump in the tank or the fuel pressure regulator?

Any advise will be highly appreciated.

Seerlah
10-06-2011, 07:12 AM
Could also be a clogged fuel filter, restricting flow. But running lean can also be caused by any of your sensors that calculates proper fueling (MAF is the biggie) or a leak in your system somewhere. Fuel pressure regulator is the easier to swap, so I would try that first. Or install an in-line fuel pressure gauge and monitor your fuel pressure that way, which seesm the better route (won't leave you guessing your fuel pressure).