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#41
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Re: Help for a new guy
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The pic is of one of my parts carbs and how the spring should be positioned. Later---DAC
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Doug Crawford Rapid City, SD 1970 GMC K5 Jimmy Mom drove 30 years 1972 GMC C2500 owned since 1979 1955 GMC 100 driver-project 2006 GMC Yukon Denali---wife's truck Hope to have a '60 GMC Suburban again someday |
#42
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Re: Help for a new guy
I'm trying to troubleshoot things without pulling apart the carb. I replaced the points and set the timing about 3-4 marks above 0 (TDC). I adjusted the fuel mixture. It runs better, but the only way to get it to highway speed is by pulling the choke out 1/4-1/2". One thing I noticed is that when I was going down a long steep hill in 1st, blue/white smoke poured out; it doesn't do this when idling. I hope it's not burning oil (?).
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#43
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Re: Help for a new guy
IDK about the I6, but the V6 only has a couple of marks for timing. If you set it 3-4 marks on that motor you'd be at like...+15 on timing
Are you sure that's right?
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#44
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Re: Help for a new guy
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#45
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Re: Help for a new guy
I was driving it 50-60 MPH with the choke still on. If I pushed the choke in, it would run but was really rough. I can get it rolling with the choke off, but it has to be revved pretty high to get it rolling.
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#46
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Re: Help for a new guy
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Boy, that is a nice one. Well, Vern....I've been readin along and I might have missed something, but I might be able to help you out.. First of all....rule of thumb is....If you need to choke your engine to get it to straighten out...then you're probably fuel starved. When you pull the choke, you reduce the airflow in, which makes it run better because you improved your air to fuel ratio. It can be anything from a fuel filter to a poor fuel pump to a blocked port inside of your carb. So think along those lines....maybe you can figure it out. Of course, I might be wrong. |
#47
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Re: Help for a new guy
Sounds just like a clogged fuel filter, replace the one inside the carb if you have already cleaned it it may still have shellac in it..Vernski
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#48
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Re: Help for a new guy
Agree with all that advice - sitting still isn't good for us or our trucks. Engine either fuel starved, or you have a leaky intake gasket leaning up the mix. Easy way to eliminate a leaky gasket is with a can of starter fluid. Get the engine idling smooth and slow. Spray the starter fluid in short bursts at each side of the base of carb, and wait between shots. Follow this procedure around each port. If idle doesn't change, no leak and proceed with fuel delivery troubleshooting.
I've had to deal with plugged accelorator jets too; like Vernski said, fuel starvation for 1 reason or another. |
#49
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Re: Help for a new guy
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(This procedure A.K.A.: Free Basing the Top End) I am also a firm believer in WD's advice to "wait between shots".... Last edited by Rockdriller; October 30th, 2013 at 03:01 AM. |
#50
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Re: Help for a new guy
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carb, gas, stall |
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