 AAR year result on 1.7 FI | cold start suction means OK? |
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| Tdskip |
 Jan 11 2019, 01:25 PM
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Advanced Member  Group: Members Posts: 3,686 Joined: 1-December 17 From: soCal Member No.: 21,666 Region Association: None 
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First of all thank you for all your help and patience as I work through these issues on the ‘73 1.7 FI car.
I’m having idle and loss of power issues that I’m trying to get sorted out. Brand new MPS from Jeff 40 PSI fuel pressure at the pump outlet Just did a cold start test on the AAR by immediately pulling the hose that goes to the rubber install and I had suction there. That suggests that my AAR is OK and I should keep moving on to other components, correct?  |
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| BeatNavy |
Jan 11 2019, 02:23 PM
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Certified Professional Scapegoat Group: Members Posts: 2,924 Joined: 26-February 14 From: Easton, MD Member No.: 17,042 Region Association: MidAtlantic Region
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Bill's right - ~28/29 psi +/- at the rail. On the 1/2 side fuel rail there should be a stub. Either it's blocked off with a very small bolt or it has a fuel line routing over to the cold start valve. That's a good place to attach a fuel pressure gauge -- just disconnect the CSV as needed.
AAR should slowly close off in a few minutes, assuming the heating element is working. I think I timed mine at 7 or 8 minutes once, just because I wanted to know. |
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Posts in this topic
Tdskip AAR year result on 1.7 FI | cold start suction means OK? Jan 11 2019, 01:25 PM
BillC I think your fuel pressure is too high. Have you ... Jan 11 2019, 02:14 PM Tdskip Hi there, and happy Friday to you.
I have not che... Jan 11 2019, 02:16 PM Tdskip May be tomorrow before I can get my hands back on ... Jan 11 2019, 03:15 PM 914_teener Tom,
You can remove the AAR and bench test it by ... Jan 11 2019, 03:42 PM
JawjaPorsche Idle issues usually is a vacuum leak somewhere.
I... Jan 11 2019, 03:51 PM |
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