I have to disagree. A bad pressure regulator knocked my mileage down to about 10. John Flaherty '84 GL Insufficient Funds ----- Original Message ----- From: "John Philcox" <jphilcox@HOME.COM> To: <vanagon@GERRY.VANAGON.COM> Sent: Thursday, March 22, 2001 8:01 AM Subject: Re: fuel pressure regultor bad? Engine running rich
> I doubt this would cause that much of a problem. My fuel regulator was > totally blocked, fuel pressure was around 90 psi. My gas mileage dropped to > about 17 mpg. Sounds like at least one of the major signals (O2, Temp2, > AFM, etc.), is not getting back to the ECU properly. Did you check the > signals at the ECU plug, and check all the ground connections? > > ----- Original Message ----- > From: "John Clemens" <jbclem@EARTHLINK.NET> > To: <vanagon@GERRY.VANAGON.COM> > Sent: Wednesday, March 21, 2001 6:51 PM > Subject: fuel pressure regultor bad? Engine running rich > > > > I have a 1983 watercooled and my gas milleage is down to 10 mph, my > air/fuel > > ratio is between 9 and10(should be 14.7). The only spec I've found so far > > that is off is the fuel pressure reading. It is .5 Bar(aprox 7 psi) too > > high at idle, both with the fuel pressure regulator vac line on and > > off(actual reading 2.5 Bar and 3.0 Bar). I've also checked with the fuel > > return line disconnected(to make sure a restriction wasn't causing this > > problem), and the fuel pressure is still .5 Bar too high. > > > > My question is whether .5 Bar(7 psi) is enough of a different to make the > > engine(1.9L) run so rich. > > > > I'd appreciate any ideas or suggestions about this problem. > > > > John |
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