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#41
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morning update:
car fired up so fast I barely heard the starter start to turn. it never started this quick even after the "okay to restart once hot" path it's been on awhile. I knew I wasn't imagining it last night! I shut it back down immediately so it wouldn't get hot so I can try it again later when we get back from the trails this afternoon but I'm pretty confident this just solved it. Thanks again to all for the info and ideas! |
The Following User Says Thank You to gto4evr For This Useful Post: | ||
#42
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afternoon (and final) update:
repeat of this morning, it's insta-starting now. Thanks again to all! |
#43
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Good to hear, glad you got it figured out.
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#44
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I had something like that going on after swapping a one wire alternator. I could hold the key on "start" and the engine would just crank with no fire . My natural reaction was to return the switch to off and try again. Just by chance, I released the key quickly to "run" and the second I released the key to run, it started. Bypass wire install took care of it.
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Triple Black 1971 GTO |
#45
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coil?
So am I correct in assuming the coil was the culprit? If so, is there is there a good points coil than members can recommend that mounts in the factory fashion?
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#46
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ACDelco U505 is a good replacement coil.
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#47
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I think that may be the first time I've ever heard of an electrical part that worked better hot than it did cold. Not saying that it didn't happen or that you're wrong, just the first time I've heard of it happening.
Sent from my moto g stylus (2021) using Tapatalk
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Greg Reid Palmetto, Georgia |
#48
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Quote:
In the course of chasing through this I also found the vac advance wasn't working so that got fixed two weeks ago. I knew it had nothing to do with the start issue but was a secondary problem. Now that both are fixed, this car's actually fun again! |
#49
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Told ya!
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“Nothing in the world can take the place of persistence. Talent will not; nothing is more common than unsuccessful men with talent. Genius will not; unrewarded genius is almost a proverb. Education will not; the world is full of educated derelicts. Persistence and determination alone are omnipotent. The slogan Press On! has solved and always will solve the problems of the human race.” ― Calvin Coolidge |
#50
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Glad you got it fixed. These cars will make you question your sanity at times!
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#51
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Quote:
Sent from my moto g stylus (2021) using Tapatalk
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Greg Reid Palmetto, Georgia |
#52
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maybe still a choke issue?
The Rochester quad is not usually that fussy, but the adjustment is reasonably critical. I have rebuilt several of those over the years dating back to 1972 on a 1971 455 HO, and never had a problem. Recheck (very carefully) the cold setting of the choke. After not more than 2 pumps of the accelerator, check the setting on the choke plate according to the rebuild specs. Then, looking into the carb at the accelerator shot, pump the gas just once to see if it is actually pumping. If so try to start the car, but do NOT pump the accelerator again. If all your settings are correct it should start fairly quickly. Don't know what else to tell you at this point.
Based on the fact that the car runs well after it does start indicates(to me) that there is an adjustment problem with the choke. Just my thoughts. Good luck - sounds like a nice car. Well, had I read further I would have seen the problem had been resolved. The coil did not enter into my mind as a possibility. Good job guys! But here is a problem I had with my 1971 GTO when out in the boonies fishing. Got back to the car and it would not start. There was NO spark at all. My first thought was it is in the distributor and while looking at the points when cranking there was no spark across them. I thought it could be the condenser, but where was I going to get one since I was miles from any parts store. To cut this short I removed the noise suppressor condenser from the fan motor to the heater and installed it in the distributor. Fired right off and I drove home. Both of those condensers are the same ufd (micro farad) and physical size, so no problem interchanging them. The one from the distributor turned out to be shorted. I had never seen one do that before nor seen one since. I have worked on many Pontiacs over the years - mostly late 50s up through mid 70s. Still drive the great ones (Pontiacs) though last built in Australia - 2008 G8GT, 2009 G8GT and a U. S. built 2009 Solstice GXP. Great cars! Last edited by FHummel; 06-16-2021 at 11:52 AM. Reason: additional info |
#53
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Quote:
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Hoping to finish a project while I'm still able to push the clutch in.... 1963 Tempest Convertible (195-1bbl, 3-speed transaxle. 428 RAIV, 5-speed, IRS planned) Pictures |
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