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Old 07-30-2008, 01:59 PM
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71 buick stalls

My friends 71 buick skylark, runs great at idle, revs good in park, but when you drive up the road and when you get on it the least little bit, it acts like you cut the switch off, so i put in new points rotor condencer test drove again same thing so, changed carb for one i knew was good same thing happend,so i changed the fuel pump, same thing stalls out. put it in neutral and let it come back to idle, it comes back to good, til you get on it a little it stalls, so i changed all fuel filters removed gas cap and blew thru lines to tank heard gas bubble, checked wires to dizzy and coil[ all i can say is help] car is a 350 buick motor, quadrajet, points dizzy. should not be a federal case to solve but with my luck its the wiggling wheel on the wobbling shaft. Thanks for any help. Wormy

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Old 07-30-2008, 03:42 PM
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Seems like you've changed all the right parts. The only other thing I can think of is to try another ignition coil.
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Old 07-30-2008, 07:38 PM
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I am pulling the tank in the morning, putting new rubber hoses on top of tank, checking all hard lines from tank to fuel pump, i am going to fix it or buy it P.S. its going to be somthing simple, but your help is as always needed Wormy.
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Old 07-30-2008, 11:38 PM
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how is the exhaust flow? Ive seen old mufflers come apart and under a loaded acceleration something moves and bbboooooogggggggggg.
If theres any question it may be easier to losen the exhaust flange bolts so it has some room to breath and run it down the road before pulling the fuel tank,or maybe just put a vaccuum gauge on it so you can watch it and take it for a run, if theres an exhaust flow issue you should see your vaccuum drop because if it cant blow it cant suck.
just another perspective
like you said its probably going to be something simple
sometimes you can't see the forest for all the the trees
hope this helps GL.

P.S. The 71 Buick Skylarkwas not equipped with a wiggling wheel on the wobbling shaft. instead it utilized the kanooter valve in series with the whatchamajig
lol

Last edited by justacertifiedtech; 07-30-2008 at 11:43 PM.
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Old 07-31-2008, 12:54 AM
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Hi Wormy

Check the vacuum advance on the distributor. If the diaphragm is blown, it will run retarded. (retarded). Make sure you have manifold vacuum to it from the ported vacuum switch with the engine warm.
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Old 07-31-2008, 07:57 AM
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Car has new set of 2 inch duals, new mufflers, car ran good for 6 months of everyday driving, started acting up a month ago little flutters sometimes, but never when i was in car, he swore something was wrong but if it dont do it when your in car could not diagnose, then it got worse the way it is now, sitting in park it runs like a new car revs good, but soon as it gets a load such as going up a hill it stalls, like it runs out of gas let it catch its breath its good till you put a load on it, thinking it could be a dirty sock filter in tank, if thats not it im stumped. will try vac advance to intake port. more help is needed. Wormy. P.S. Thanks
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Old 07-31-2008, 08:34 AM
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Wormy, I've had a weak coil produce the same symptoms you're describing. Have you allready tried another coil on it? Had a 66 Skylark that ran fine without a load on the engine, but wouldn't even pull above 15mph in gear then would stall.
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Old 07-31-2008, 02:14 PM
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Found the problem, the filter in the tank was 90% stopped up with goo, is what it looked like, cleaned tank put in new filter, runs like a charm who would have thought it, must be the well refined gas we have nowadays anyway thanks for the input. Wormy.
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Old 07-31-2008, 02:28 PM
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Good deal Wormy, Now it's play time.
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