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New Carb Revving HIGH! PICTURES

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Brad2192 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Brad2192 Quote  Post ReplyReply Direct Link To This Post Topic: New Carb Revving HIGH! PICTURES
    Posted: Aug/29/2018 at 7:31pm
Just threw on my factory new O-1756 Carb... As soon as I turned it on it revs all the way up. On a related note this part fell out of the original carb.. Assuming it is a piece to control fuel flow, can some please tell me where this goes on the new carb? Thank you in advance!



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Post Options Post Options   Thanks (0) Thanks(0)   Quote tyrodtom Quote  Post ReplyReply Direct Link To This Post Posted: Aug/29/2018 at 7:47pm
That's the needle valve,   and yes,  it controls fuel flow to the float bowl.

What i'm wondering, is how did this fall out of the carb. ?
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FSJunkie View Drop Down
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Post Options Post Options   Thanks (1) Thanks(1)   Quote FSJunkie Quote  Post ReplyReply Direct Link To This Post Posted: Aug/29/2018 at 8:42pm
You're new to carburetors, aren't you. 
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Post Options Post Options   Thanks (0) Thanks(0)   Quote purple72Gremlin Quote  Post ReplyReply Direct Link To This Post Posted: Aug/29/2018 at 8:53pm
Thats the needle as to the float (needle and seat)....and before you go any further, you better find someone that knows about old cars to help you set that carburetor. When they are cold the choke may make it rev higher than it would when warm
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Post Options Post Options   Thanks (4) Thanks(4)   Quote Sonic Silver Quote  Post ReplyReply Direct Link To This Post Posted: Aug/29/2018 at 9:00pm
Originally posted by FSJunkie FSJunkie wrote:

You're new to carburetors, aren't you. 
That was helpful to the original poster.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote purple72Gremlin Quote  Post ReplyReply Direct Link To This Post Posted: Aug/29/2018 at 9:14pm
And I just thought of this, do you have a TSM for this car? TSM means the factory service manual, it will have pictures, and all the specs as to what your car is supposed to be set at...

If you dont know how a carburetor works, you will need a basic understanding so you can work on it ... I suggest you read about carburetors, maybe youtube, and there is information. Another thing is your car has points and condensers, and an older person or a mechanic in his mid 50s will know or should know.....
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Post Options Post Options   Thanks (0) Thanks(0)   Quote tomj Quote  Post ReplyReply Direct Link To This Post Posted: Aug/29/2018 at 10:07pm
if it revs out of control after you start it, without your foot on the gas etc -- check the throttle linkage. you should be able to puzzle out how it works without the manual, assuming it's assembled more or less correctly. it should snap back to the idle position when you let go. if it sticks, or stays in any position, it's AFU.

it's possible that the fast idle business is set crazy high.

carburetors are frustratingly simple and subtle. first time around you should literally go by the book.

there's a bunch of gasoline in there. if it pumps all over the place you can easily have a carb fire that turns into a garage fire, etc. you can puzzle them out yourself, but you really need to RTFM the basics of how they work -- they are nearly all the same in function -- or you'll drive yourself crazy.

keep in mind that carburetors are literally analog computing devices. with air flow, wet emulsions, Bernoulli principle (same one that makes airplanes fly, really), levers and springs and calibrated holes.

but what you're trying to do is just assembling a pre-made puzzle and tweaking it to correct. but you'll have to read how carbs work or you'll not get anywhere useful.

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Post Options Post Options   Thanks (0) Thanks(0)   Quote PHAT69AMX Quote  Post ReplyReply Direct Link To This Post Posted: Aug/29/2018 at 10:08pm
This is a joke, right ?
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Brad2192 View Drop Down
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Post Options Post Options   Thanks (1) Thanks(1)   Quote Brad2192 Quote  Post ReplyReply Direct Link To This Post Posted: Aug/30/2018 at 5:45pm
I figured it out myself luckily. Guys, I'm 26. And I'm not going to pretend to be a know it all. Didn't come with here with a false ego because my Daddy didn't love me enough, so ya'll can chill out. I've used these before, but I have not encountered any in the shape of a triangle. This is my first AMC project, thank you to all that were helpful. And the others may need to reevaluate their life choices if they thought spending time on a snarky remark to get their willies off was really worth it. Clap
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Post Options Post Options   Thanks (0) Thanks(0)   Quote purple72Gremlin Quote  Post ReplyReply Direct Link To This Post Posted: Aug/30/2018 at 6:35pm
Originally posted by Brad2192 Brad2192 wrote:

I figured it out myself luckily. Guys, I'm 26. And I'm not going to pretend to be a know it all. Didn't come with here with a false ego because my Daddy didn't love me enough, so ya'll can chill out. I've used these before, but I have not encountered any in the shape of a triangle. This is my first AMC project, thank you to all that were helpful. And the others may need to reevaluate their life choices if they thought spending time on a snarky remark to get their willies off was really worth it. Clap
I realized you were a younger guy. Just remember we all started not knowing....and AMC wasnt any differwnt than any other American car back in the day. And Ive worked on all of them.
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