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1985 Chevy Camaro no cold start

Tiny
MY86GMC1
  • MEMBER
  • 1985 CHEVROLET CAMARO
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 120,000 MILES
I have a 1985 chevy camaro 2.8 that will turn over fine when trying to start. After numerous attempts I can smell gas. If the temp rises about 55f it starts as if nothing is wrong. And starts fine the rest of the day. I have replaced the air intake temp sensor. Is there a cold start fuel injector? I have heard of a cold start valve, so what can I do to fix either. I'm a decent mechanic, and am looking at replacing all the injectors this month, what route would you take? Thanks.
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Thursday, March 11th, 2010 AT 4:08 PM

1 Reply

Tiny
DAVE H
  • MECHANIC
  • 13,384 POSTS
Hello .. thanks for the donation .. much appreciated

Cold Start SwitchTop front of engine (top left side, front of engine 2.8L). See Fig. 3


https://www.2carpros.com/forum/automotive_pictures/266999_cam_11.jpg



CHART A-9, COLD START VALVE (ALL ENGINES)
The cold start valve is used to provide additional fuel during the crank mode to improve cold starts. This circuit is activated only in the crank mode. The system is controlled by a thermal time switch which provides a ground path for the valve during cranking when coolant temperature is below 95 °F (35 °C).
Disconnecting the distributor 4-way connector will disable the other injectors. The amount of pressure drop depends on the temperature of the engine.
This test will determine the continuity through the thermal switch to ground.
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Friday, March 12th, 2010 AT 5:03 PM

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