A few months ago, I installed an Accufab adjustable fuel pressure regulator and gauge for the fuel rail. Over the past month, I've noticed that each time I go check the FP, the reading can vary 5-10 psi. For example, set to 42psi line off, car runs OK , then gradually KRs grow...I check FP again, and it reads 37 psi. What gives? I actually contacted Accufab and had just removed it, planning to return for diagnosis. But, I re-installed the Bosch (38 psi fixed) that came with the car and noticed that it was reading 44 psi - 6 psi higher than it should be!!
I've tried three different gauges, that's not the problem. Could it be the return line is clogged? If so, what's the best remedy?
Any ideas? Thanks.
I've tried three different gauges, that's not the problem. Could it be the return line is clogged? If so, what's the best remedy?
Any ideas? Thanks.