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Go Back   SR20 Forum > Main Forums > SR20DE Technical Corner



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Old 11-01-2003, 04:35 PM   #1 (permalink)
G20.net stray

 
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Fuel pressure gauge

Having a bit of trouble w/ the gauge... Im not sure if the gauge is bad, or if I just mounted it incorrectly. Basically I used a B&M 46054 fuel pressure gauge (pic below), bought a T fitting from home depot, and spliced it into my fuel line just before the FPR. The reading is zero... all the time, even when the car is running (very badly). I dont know if the fuel is just bypassing the T and going straight to the fuel rail I guess i just need someone to confirm that it should still be working before I shell out another $50 for a new one.

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Old 11-01-2003, 09:58 PM   #2 (permalink)
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Never mind... fixed it.
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Old 11-01-2003, 11:52 PM   #3 (permalink)
no..its not my daddys car

 
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What was the problem? I may be installing one soon...do you have any pics of the install? Thanks a lot

Josh
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Old 11-02-2003, 11:09 AM   #4 (permalink)
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i would like to know also...i was thinking about this too.
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Old 11-02-2003, 12:08 PM   #5 (permalink)
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Probably had it in the wrong line.
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Old 11-02-2003, 05:58 PM   #6 (permalink)
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Quote:
Originally Posted by 97SE-R C2
Probably had it in the wrong line.
Yep
For some reason I was fixated on having the gauge right before the FPR, but really the FPR is connected to the fuel outlet line (I never even thought of that until I looked at the FSM). Once I connected it to the fuel inlet line, it worked great.

I could take pics (the install was really a piece of cake). Basically all I did was get a 3/8 brass T from home depot, a 3/8 to 1/8 brass converter (for the T to the gauge), and two 3/8 thread to 3/8 hose nipple brass fittings w/ 2 screw clamps. Screw them all together w/ teflon tape and slip the on the line and clamp. I cut about 2" off the inlet hose, and used it to fit the rail inlet to one side of the T. The fuel hoses are a 5/16 ID, so I had to really work them a bit to get them to fit over the nipples (my Home Depot didnt have 5/16 nipples). Use the 2 original clamps to clamp the hose back to the FPR & fuel inlet sections of the rail.

The gauge peeks out just under the MAF to Intake hose, in clear view to tune. I got the gauge for $35, and lots of places have them.

Supplies needed:

- B&M 46054 fuel pressure gauge (listed for Acura/Honda/Mitsubishi)
- 3/8" Brass T fitting from Home Depot
- 3/8" to 1/8" NPT fitting (Home Depot)
- Two 3/8" thread to 3/8" hose nipple fittings (Home Depot) (If you can find 3/8" to 5/16" hose nipple fittings or just an entire 5/16" system, it may be easier to fit on the hoses)
- Teflon tape
- Two screw clamps (that fit over 3/8 OD hose)

Total cost ~$45

*ID and OD are Inside diameter and Outside diameter measurements

Last edited by freaktroll : 11-04-2003 at 07:38 PM.
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Old 11-02-2003, 06:54 PM   #7 (permalink)
chi-town ser

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post a pic if you have one--that would be cool
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Old 11-04-2003, 07:36 PM   #8 (permalink)
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Pics

Quote:
Originally Posted by 9double8
post a pic if you have one--that would be cool



You can see the fabricated Home Depot T in the fuel line just behind the gauge.
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Old 11-05-2003, 01:50 AM   #9 (permalink)
chi-town ser

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Thanks for the pics and info!
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