TBI Throttle Body Injection discussion and questions. L03/CFI tech and other performance enhancements.

About fuel presure...

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Old Jun 30, 2003 | 12:33 AM
  #1  
Crisis's Avatar
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From: Hyvinkää, Finland
About fuel presure...

Should the fuel presure stay up when i turn the power on?? (not starting)

I got to the track last weekend and ran a 16.4 @ 85mph / '60 2.47s

I started looking whats wrong since i thought i'd run high to mid 15's..

now.. when i turn the power on the fuel pump does go on. The fuel presure raises to 12.5psi which i set it to.. the presure stays there for about 3 seconds and then drops to 3 psi.. and slowly goes to 0 after that... is this normal?? or is the fuel pump leaking and not holding presure..

my trainy was sliping also but don't you think 16.4 is pretty slow for this set-up??
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Old Jun 30, 2003 | 07:39 AM
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From: Columbus, Ohio
Car: 92 Camaro RS
Engine: 350 TPI
Transmission: T5 manual
That is normal if your just turning the key to run. If it going low while the engine is running, you have a problem.
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Old Jul 1, 2003 | 12:11 PM
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From: Mesa, AZ
Car: A Camaro
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Transmission: Weaker
I'd say work on your launch, if you got your sixty foot down to a 2.2xx range, you'd be close to the 15's if not in the 15's, good luck!
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