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Thanks to Mike, AGAIN, we think we finally found my fuel pressure problem. You have heard me whine about the fluctuating pressure in recent posts. Today Mike decided to put his Mity-vac on the vacuum port of the FPR and with the fuel pump running, tried to simulate boost by applying pressure from the Mity-vac. He first tried it on his and got a steady 1# increase of pressure for every 1# "boost". On mine, when we added 20# pressure from the Mity-vac, my FPR increased by 24#. So, when I ran Wed night, not only did the FP at idle jump up to 50#, but it was adding more than 1# FP per boost pressure. Still find it hard to believe that I got 2 bad FPRs.
Then proceeded to check all the hoses under hood and discovered that my Westach boost gauge is registering about 4# high at 20#. Also discovered that a fairly new PCV was bad and made us wonder how much boost I was dumping into the crankcase. Wonder how much boost I was really running when the car went 11.50 @ 120.5 with the gauge showing 21# and a bad PCV? Had to giggle when we looked at a DS file and saw I had the TPS wide open for 3.5 secs before launching and could only see 2# boost on the guage. Turns out that was probably a vacuum launch, and a 1.76 to boot
Got a lot of work to do, but at least now I know what to do and what to look forward to.
Mike, I know I am getting gushy, but thanks again.
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Scottie's GNZ
[This message has been edited by Scottie-GNZ (edited January 27, 2001).]
Then proceeded to check all the hoses under hood and discovered that my Westach boost gauge is registering about 4# high at 20#. Also discovered that a fairly new PCV was bad and made us wonder how much boost I was dumping into the crankcase. Wonder how much boost I was really running when the car went 11.50 @ 120.5 with the gauge showing 21# and a bad PCV? Had to giggle when we looked at a DS file and saw I had the TPS wide open for 3.5 secs before launching and could only see 2# boost on the guage. Turns out that was probably a vacuum launch, and a 1.76 to boot

Got a lot of work to do, but at least now I know what to do and what to look forward to.
Mike, I know I am getting gushy, but thanks again.
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Scottie's GNZ
[This message has been edited by Scottie-GNZ (edited January 27, 2001).]