TPI Tuned Port Injection discussion and questions. LB9 and L98 tech, porting, tuning, and bolt-on aftermarket products.
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slight hesetatioon...

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Old Sep 10, 2002 | 11:42 AM
  #1  
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From: Doghouse ······································ Car: 1989 Formula 350 Vert Engine: 350 L98 Transmission: 700R4 Axle/Gears: B&W 3.27
Car: 87 Formula T-Top, 87 Formula HT
Engine: 5.1L TPI, 5.0L TPI
Transmission: 700R4, M5
Axle/Gears: Sag 3.73, B&W 3.45
slight hesetatioon...

On a port fuel injection system, what would cause a slight hesetation when warm? only happens when taking off from a dead stop. Not my bird but my 95 Supercharged Riv...

thanks

John
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Old Sep 10, 2002 | 01:31 PM
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Could just need a tune up. Check the vacuum lines and other small things.

I had the same problem with my car, but it turned out to be a leak in the intake manifold.
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Old Sep 10, 2002 | 01:44 PM
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From: Doghouse ······································ Car: 1989 Formula 350 Vert Engine: 350 L98 Transmission: 700R4 Axle/Gears: B&W 3.27
Car: 87 Formula T-Top, 87 Formula HT
Engine: 5.1L TPI, 5.0L TPI
Transmission: 700R4, M5
Axle/Gears: Sag 3.73, B&W 3.45
Other than Plugs, and Wires, what the heck is there to tune up on a FI engine, especially one that everything is controlled by computer? I have yet to figure that out... Timing is controlled by the ECM, so I really do not know what else to look into...

thanks

John
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