cold start valve/ninth injector
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Joined: Mar 2005
Posts: 132
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From: Tyndall AFB, FL
Car: 1985 Z28
Engine: 305 TPI
Transmission: 700R4
Axle/Gears: garbage 2.73
cold start valve/ninth injector
Anyone know what the resistance should be? Its reading 4.5 ohms now and thought it might be leaky causing my surging idle.
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Joined: Jan 2003
Posts: 2,133
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From: Houston, Texas
Car: 88' IROCZ
Engine: 388 TPI Motown 350 Race block
Transmission: 700R4
Axle/Gears: 2.77
Alldata doesn't show specs for the cold start valve, I assume it's the same as the others 15.8 to 16.6 ohms at 68°F.
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From: Norfolk, VA. USA
Car: 86 Trans Am, 88 Formula
Engine: 95LT4, 305TPI
Transmission: T56, T5
If you want to check for leaky injectors, pull the rail off and place a pan under it and then jumper the fuell pump relay and see if any of the injectors leak.
Before doing that, hook up a fuel pressure gauge and see how long it holds pressure after it presurizes for 2 seconds.
If it drops down quickly, you can have a leaky injector, leaking regulator, or a fuel pump with a bad check ball.
Before doing that, hook up a fuel pressure gauge and see how long it holds pressure after it presurizes for 2 seconds.
If it drops down quickly, you can have a leaky injector, leaking regulator, or a fuel pump with a bad check ball.
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nhra-trans-am
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Sep 17, 2015 10:16 PM
