New pump, new filter, same fuel pressure - Off-Road Forums & Discussion Groups
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post #1 of (permalink) Old 04-22-2004, 10:32 PM
jeepfiend
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New pump, new filter, same fuel pressure

Okay, maybe we are getting a little more traffic here since Discoweb has been down a lot lately. I have been having what I thought were fuel pressure problems on my '97 Disco. I was told the pressure should be 36-37psi, is this true? I get just over 30 at startup and it immedialtely drops to 26-27 at idle, I have the advanced evap emmissions system. I have been getting some weird lean and rich conditions and some O2 sensor errors, specifically slow transition times on the O2's. Everyone on Discoweb thought fuel supply problem. It seems that I have the same pressure as before. My wife will kill me if I now to replace an O2 sensor [img]images/graemlins/chair.gif[/img], especially since they cost almost as much as the pump. I have a liquid filled gauge installed on the fuel plenum, so I am pretty sure my pressure readings are right. I would appreciate any thoughts.
Thanks,
Kris
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