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Classic Truck Discussion Board |
Re: Re: Re: Re: Re: '78 Chevy K-10 blues (Roch. Ca
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Posted by Bob S on December 24, 2004 at 18:48:35 from (12.149.228.70):
In Reply to: Re: Re: Re: Re: '78 Chevy K-10 blues (Roch. Carb) posted by Loren on December 24, 2004 at 18:11:47:
Well, here's the basic situation: :-) Its a '78 350 K10 with a TH350 automatic/automatic Xfer case. In warm weather it starts and idles like a champ. In cold weather, and this just started last winter, it doesn't matter if I pump the gas pedal or not. As soon as the carb gets gas from the pump line, the carb will flood to the point where gas will spit out of the butterflys on top of the carb and drip off the shaft for the rear throttle body ports. Imagine pouring a quart of gas into your carb. ;-) At best, the engine will just begin to catch and then die. I did have a guy help me last year. One thing I wasn't sure of was that it looked like he was adjusting all of the mixture needles (EEK!?). Like I said in an earlier post, I'm dealing with multiple unknowns. The choke seems to be working and will open the front buterfly about half way. To me, it seems like an extream case of flooding. (LOL-sorta) One thing you did bring up has me wondering. When adjusting on a cold engine, how cold is cold and would I have to redo the adjustments for running during the Summer? I ask that because we some drastic temperature shifts up here. Figure 80's to 90's in Summer and 20's to -30's in Winter. BTW, what should my "rough" settings be for the mixture needles? IE, how many turns out from fully closed?
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