Thursday, January 19, 2012

1975 Chevy truck, 350, edelbrock carb, backfires after tuneup at shop. He will not work on it anymore.?

I live at 6500' elevation. He said he set it to run at this elevation. Is the dist set wrong? It has always run great until now. New cap, rotor, wires and plugs. How can I fix this??1975 Chevy truck, 350, edelbrock carb, backfires after tuneup at shop. He will not work on it anymore.?
set the timing to 10 degrees with a timing light1975 Chevy truck, 350, edelbrock carb, backfires after tuneup at shop. He will not work on it anymore.?
I would check the firing order as it sounds as if he has switched two plug wires around. 1-8-4-3-6-5-7-2

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