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Stalling unless at idle. 65 232 classic |
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DocLong
AMC Apprentice Joined: Mar/02/2019 Location: Dayton, Ohio Status: Offline Points: 89 |
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I found what I assume to be the problem. Whatever actuates the accelerator pump is broken.
I'm not sure how to post pics here, but it's a little white plastic piece. As far as the carb posted in the linked thread above, mine is very similar, but has the square shaft accelerator pump instead of the round.
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FSJunkie
AMC Addicted Joined: Jan/09/2011 Location: Flagstaff, AZ Status: Offline Points: 4741 |
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Probably because the choke is zip-tied shut it can get enough air past it to idle but loads up rich as soon as the throttle is opened.
Choke valves have to open more as the throttle opens more. Can't do that when it's zip-tied shut. That is some serious redneck right there. |
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1955 Packard
1966 Marlin 1972 Wagoneer 1973 Ambassador 1977 Hornet 1982 Concord D/L 1984 Eagle Limited |
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DocLong
AMC Apprentice Joined: Mar/02/2019 Location: Dayton, Ohio Status: Offline Points: 89 |
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After taking it apart, I'm not sure why it was zip tied. It was pretty much free to move. No clue what he was up to.
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farna
Supporter of TheAMCForum Moderator Lost Dealership Project Joined: Jul/08/2007 Location: South Carolina Status: Offline Points: 19610 |
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Sticking valves. That's usually caused by old fuel residue. So drop the fuel tank and clean it out real good! Something like brick cleaning acid (watered down as if cleaning brick) works very well. You can dump a box of baking soda in after cleaning then pour the neutralized acid out, but you still have that old fuel residue, so don't pour down a storm drain. At least it's not acidic and won't acid burn anything...
There are other fuel tank cleaners you can buy, but you can't just use new gasoline. That might eventually dissolve any residue, but you'd have to let the tank sit a while to do it, then have to dispose of the old gas. Just running with extra fuel filters won't work. The old residue dissolves enough that it goes through, but gets into the valve guides as a vapor that condenses on the valves stems, leaving a thin gummy varnish that eventually builds up and causes the valves to stick. You have to disassemble and clean the valves and guides to reliably get rid of it. Ask Tom and I how we know!!!
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Frank Swygert
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