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1987 PCM Chevy 350 smoking on cold start

L

L. Robin

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"I have a PCM Chevy 350, Holly

"I have a PCM Chevy 350, Holly Carb in my 1987 Supra Comp ts6m. When I start it up cold after a few days of not running it, it lets off black smoke for aboute 5 minutes until the engine warms up. Does not seem to affect performance. No smoke after that. Any Ideas? Thanks!"
 
"Choke is set wrong, black smo

"Choke is set wrong, black smoke to much fuel, choke not opening soon enough. Have it adjusted"
 
Replaced the electronic choke

Replaced the electronic choke thermostat. Fires up instantly now with no smoke at all. Idles very smoothe.
 
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