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Classic Truck Discussion Board |
'78 Chevy K-10 blues (Roch. Carb)
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Posted by Bob_S on December 20, 2004 at 23:51:15 from (12.149.228.109):
Hello, everyone.
I have a '78 K-10 (350/auto/Roch. M4MV Carb) that I use for work around the property. I've rebuilt quite a bit of this truck over the last three years (engine overhaul, trans overhaul, suspension overhaul, etc.) but I've found a new problem.
In cold weather (especially cold and damp, it seems) the carb floods out while starting to the point where gas will spit out the top of the carb and drip off the butterfly rods, bad enough to have caused a fire last year that, luckily, didn't destroy the truck.
I've installed a new carb kit (gaskets, float, needle, etc.) and set the float per the directions. I've also checked the fuel return line (from the pump) in case it was plugged. I've run out of ideas about what the cause is, but I did find this (http://www.tocmp.com/manuals/Carbs/Rochester/QJet/) yesterday. Anyone ever hear of a problem like this before?
The truck runs fine in warm weather.
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