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New Carb Revving HIGH! PICTURES |
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Brad2192
AMC Fan Joined: Aug/26/2018 Location: Rhode Island Status: Offline Points: 26 |
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Thank you very much for the response, that was not directed towards you as your response was just what I needed. I was priding the forum in my last post for being extremely helpful, there's always gotta be THOSE guys though. Anyways, thank you!
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tyrodtom
AMC Addicted Joined: Sep/14/2007 Location: Virginia Status: Offline Points: 6214 |
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Just leaving out the needle valve itself will cause high RPM.
I have had a brass carb. float that had a hole in it, it sunk to the bottom of the float bowl and wouldn't close the needle valve . Engine RPM went very high instantly. Had to shut the engine down. Finally figured out what the cause was. Different exact cause, but the same effect. We all make mistakes, that's how we learn.
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66 American SW, 66 American 2dr, 82 J10, 70 Hornet, Pound, Va.
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tomj
AMC Addicted Joined: Jan/27/2010 Location: earth Status: Offline Points: 7553 |
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i think OP said the needle fell out of the OLD carb, not the new one. right? i confuse. lol. so you got a new carb, and it "runs away" RPM-wise? any more info on that? i'll assume you can ID the major adjustments: * idle SPEED screw * idle MIXTURE screw * FAST IDLE screw * choke those are the main adjustments on any carb. if you're reasonably sure the carb isn't completely nuts, what i would do first is loosen the choke housing and rotate it so that the choke is OFF/OPEN, and inoperable. the engine won't be easy to make idle when it's cold but the choke sets fast idle and that complicates initial shake out. you can easily re-set it later. back out the idle SPEED screw so the throttle closes all the way. looking closely, turn it in until the screw touches the stop, then another turn, maybe two. idle MIXTURE screw bottomed, **GENTLY** (two fingers or equiv) then out 1.5 to 2 turns, or wtf the manual sez. if there's fuel in the carb (you cranked/ran it before) operatring the throttle all the way open should squirt gas, visibly, on the venturi horn down it's throat. which you should be able to see with the choke off. start the car. if it NOW runs away, somethings very AFU. stop adn regroup. if you're lucky, it will fire, run for a few seconds, then stall or idle like crap. that's fine. this is the base line from which to tweak the carb into shape. if you always start from First Principles, you can make any carb go "well enough" with basic knowledge. |
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1960 Rambler Super two-door wagon, OHV auto
1961 Roadster American, 195.6 OHV, T5 http://www.ramblerLore.com |
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The Anti Chrysler
AMC Apprentice Joined: Dec/02/2016 Location: WA State Status: Offline Points: 120 |
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OP has got to be trolling...
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FSJunkie
AMC Addicted Joined: Jan/09/2011 Location: Flagstaff, AZ Status: Offline Points: 4742 |
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No, he's not trolling. The float needle fell out of his carburetor and he is unfamiliar with where it goes in the carburetor. And I was an asshole to joke about it. I'm sorry and I am ashamed. He is 26 and I am 23. We need each other's help in this community. The classic car community is not kind to young people. Fighting that for years has made me bitter and resentful, which is why I made my snappy remark at him. I became that which I hate: I became an angry bitter car guy holding another car guys' age or inexperience against them. I HATE when people do that to me, and I was a total hypocrite to do that someone else. Sometimes I need a reminder that another young person in the classic car hobby is not my enemy or competitor. They are my ally against true enemies and competitors. Sorry for that, Brad2192. I am glad you figured it out on your own and stood up for yourself. |
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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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tomj
AMC Addicted Joined: Jan/27/2010 Location: earth Status: Offline Points: 7553 |
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FSjunkie, you're --> 23 <-- ? oh boy, OPEN SEASON! HORRIBLE YOUNG PERSON! heh heh! lol i thought you were older. that could be flattery or an insult. YOU DECIDE. yeah, it seems most car folk (dangerous generalizing...) go for nostalgia. young people making mistakes doesn't fit into that. i don't really understand nostalgia, i didn't get that gene. ugh, i don't want what i had before, i wanna do new things (sometimes with old stuff, eg. cars, cuz they're hackable. i add software.) i feel like i mostly make mistakes. i have piles of them. just installed my 7th (seventh) instrument panel today). i did far dumber stuff, and persisted at it, than just mis-identifying a stupid needle valve. but it was pre-internet, so fewer witnesses. also, the culture then was a lot more comfortable with the logic of physical stuff, physical problem-solving. today, "kids" (lol) all of the goods, and all of the metaphors, are software constructs. in the 70's, old guys complained that kids were playing with computers instead of radios/electronics, as $DIETY intended. today, it's all clicking on corporate-managed phone-product. owed fokes should FKN CELEBRATE "young people" messing with physical, actual technology -- it's much harder now for very many reasons including there's simply less of it to mess with. Edited by tomj - Aug/31/2018 at 10:49pm |
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1960 Rambler Super two-door wagon, OHV auto
1961 Roadster American, 195.6 OHV, T5 http://www.ramblerLore.com |
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Fluffy73
AMC Addicted Joined: Nov/21/2007 Location: Castlegar, BC Status: Offline Points: 3059 |
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I'm just reminded of the analogy of the Mule with the Spinning Wheel.
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I am genetically incapable of being Politically Correct.
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Sonic Silver
Supporter of TheAMCForum Joined: Nov/23/2011 Location: East Tennessee Status: Offline Points: 7966 |
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purple72Gremlin
AMC Addicted Charter Member Joined: Jul/01/2007 Location: Illinois Status: Offline Points: 16614 |
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Brad2192
AMC Fan Joined: Aug/26/2018 Location: Rhode Island Status: Offline Points: 26 |
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That was probably the coolest dung I've ever heard come from anyone. Thanks for the apology, like everyone said that is some real-man action to do what you just did, made the whole post worth it.
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