Is ~50-60PSI Fuel Pressure Ever OK?
01-27-2010, 09:56 AM
#1
Three Wheelin'
Thread Starter
Is ~50-60PSI Fuel Pressure Ever OK?
I've got a ~1 year old 3BAR and a brand new fuel damper and am seeing ~50-60PSI at the rail. It's weird, sometimes after driving for a while I'll look at it shows ~44PSI but this morning after taking my son to school...a drive just long enough to get the car good and warm, I opened the hood and saw the gauge pegged at almost 60PSI.
My AFR's are right at 14.7ish at warm idle, but I can still smell a pretty heavy gas odor from the tailpipe and the car does tend to want to run a little rich and is often slow to work it's way back up to 14.7 at idle. I was thinking that this was due to a grounding issue (I'm changing out my negative battery line to the bellhousing this weekend), but even that shouldn't cause that spike in fuel pressure at the rail, right?
When I pull the vacuum line off the FPR the car chokes a bit and the fuel pressure does rise, as expected.
I'm considering buying an adjustable FPR to dial in 44PSI at idle w/o vacuum pressure but not sure why this is happening. Any ideas?
My AFR's are right at 14.7ish at warm idle, but I can still smell a pretty heavy gas odor from the tailpipe and the car does tend to want to run a little rich and is often slow to work it's way back up to 14.7 at idle. I was thinking that this was due to a grounding issue (I'm changing out my negative battery line to the bellhousing this weekend), but even that shouldn't cause that spike in fuel pressure at the rail, right?
When I pull the vacuum line off the FPR the car chokes a bit and the fuel pressure does rise, as expected.
I'm considering buying an adjustable FPR to dial in 44PSI at idle w/o vacuum pressure but not sure why this is happening. Any ideas?
