Idle Won't Kick Down
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From: At my Bar drinking and wrenching in Lafayette Colorado
I see from another thread you have going that you will be selling the car. Rebuild what you have and make it run right. Every dollar you sink into the car will be a loss, so just make it run well.
Lars
Last edited by lars; Sep 5, 2017 at 07:18 PM.
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I didn't say "professionally" rebuilt. I said "commercially" rebuilt. The commercially rebuilt carbs, which some people think are "professionally" rebuilt, are pure junk and will run worse than what you have. Read the papers I've written about the subject. Email me if you need copies. I'm aware of 3 people who can do a professional rebuild job in addition to several here on the Forum who can do a very good rebuild and setup on their own cars.
I see from another thread you have going that you will be selling the car. Rebuild what you have and make it run right. Every dollar you sink into the car will be a loss, so just make it run well.
Lars
I see from another thread you have going that you will be selling the car. Rebuild what you have and make it run right. Every dollar you sink into the car will be a loss, so just make it run well.
Lars
I enjoy just owning my Vette and I want it to run well and I want to have fun.
I think having the correct carb rebuilt professionally is the way to go.
I'll keep my eyes open on this forum for someone selling one.
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You might have missed it...but I wrote this in post #27. The photo I am referencing is in post #22.
With you having no heat riser..I am curious on how fast the tubes I showed in your one photo get hot when you have the engine running???
Like I wrote...I am curious on how long it takes for the tubes to get hot and your choke to pull off.
DUB
With you having no heat riser..I am curious on how fast the tubes I showed in your one photo get hot when you have the engine running???
Like I wrote...I am curious on how long it takes for the tubes to get hot and your choke to pull off.
DUB
Im running headers and no heat riser, the tubes warm quick and will usually kick choke off within a minute or two... HOWEVER it didnt work right when i bought the car....and fast idle cam is way off now since i set timing back, previous owners messed with it.
Pettyty hard to tell someone how to tune a carb over the internet, from the pics of carb that he posted it looks like many adjustments have been made, even kick off arms look rip and torn like someone bending on them. I would suspect idle mix is way off as well as fast idle cam...all these little settings can make or break a good working motor....running rich at startup, reving the **** trying to warm it up takes it toll...hense a blown rad hose....i would say that carb and setup would work great, just have to familiarise yourself with a few adjustments. Truth be told you going to need to learn it on a different carb if you do swap it out. So why not try onthe old carb first. You may be surprised how good it works after all!!!
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Dub,
Im running headers and no heat riser, the tubes warm quick and will usually kick choke off within a minute or two... HOWEVER it didnt work right when i bought the car....and fast idle cam is way off now since i set timing back, previous owners messed with it.
Pettyty hard to tell someone how to tune a carb over the internet, from the pics of carb that he posted it looks like many adjustments have been made, even kick off arms look rip and torn like someone bending on them. I would suspect idle mix is way off as well as fast idle cam...all these little settings can make or break a good working motor....running rich at startup, reving the **** trying to warm it up takes it toll...hense a blown rad hose....i would say that carb and setup would work great, just have to familiarise yourself with a few adjustments. Truth be told you going to need to learn it on a different carb if you do swap it out. So why not try onthe old carb first. You may be surprised how good it works after all!!!
Im running headers and no heat riser, the tubes warm quick and will usually kick choke off within a minute or two... HOWEVER it didnt work right when i bought the car....and fast idle cam is way off now since i set timing back, previous owners messed with it.
Pettyty hard to tell someone how to tune a carb over the internet, from the pics of carb that he posted it looks like many adjustments have been made, even kick off arms look rip and torn like someone bending on them. I would suspect idle mix is way off as well as fast idle cam...all these little settings can make or break a good working motor....running rich at startup, reving the **** trying to warm it up takes it toll...hense a blown rad hose....i would say that carb and setup would work great, just have to familiarise yourself with a few adjustments. Truth be told you going to need to learn it on a different carb if you do swap it out. So why not try onthe old carb first. You may be surprised how good it works after all!!!
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Last edited by '75; Sep 5, 2017 at 08:05 PM.
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Now that choke is set properly...let engine get use to ideling normal a few days/drives....then look up fast idle cam adjustment for quadrajets on youtube. What a few videos and verify your choke is closing when cold, you should be able to get it working pretty good with a phillips screwdriver and a little patience, even if carb is worn out, you at the very least could make it driveable amd have a little fun in the process!!!
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Yes i know norcoastal, no fault of yours....im pretty sure the guy you got it from just did a quick swap and sent it on its way...the tell tale for me was seeing the choke set up way to rich, which would keep the fast idle cam on almost indefinately...meaning your car when warmed up should be around 2000-3000 rpm idle. Not good.
Now that choke is set properly...let engine get use to ideling normal a few days/drives....then look up fast idle cam adjustment for quadrajets on youtube. What a few videos and verify your choke is closing when cold, you should be able to get it working pretty good with a phillips screwdriver and a little patience, even if carb is worn out, you at the very least could make it driveable amd have a little fun in the process!!!
Now that choke is set properly...let engine get use to ideling normal a few days/drives....then look up fast idle cam adjustment for quadrajets on youtube. What a few videos and verify your choke is closing when cold, you should be able to get it working pretty good with a phillips screwdriver and a little patience, even if carb is worn out, you at the very least could make it driveable amd have a little fun in the process!!!
I do want to get the correct carb, but it's so nice to have a normal running car without the fuel rich smell.
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Thanks!
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From: Charlotte NC
The only reason I am asking how fast those tubes get hot...is that I have had many Corvettes that have had altered exhaust systems and those tubes would take along time to get hot and pull off the choke. Literally 3-5 minutes of run time...you could touch them and they would not burn you. And it would be worse in the dead of winter also.
DUB
DUB
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The only reason I am asking how fast those tubes get hot...is that I have had many Corvettes that have had altered exhaust systems and those tubes would take along time to get hot and pull off the choke. Literally 3-5 minutes of run time...you could touch them and they would not burn you. And it would be worse in the dead of winter also.
DUB
DUB
I have to check when I get back to New York. I'm in Austin now.
I will let you know and thank you so much for your help.
Steve
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From: Charlotte NC
No worries. Hopefully it heats up quickly like a previous Corvette Forum member posted in a response to you about this.
Also...the small black hose (1/4" I.D. I believe) that you see that is going from the choke housing to the one tube on the side of the carb. I can tell you that in time.... that hose will dry up and crumble away due to it is not like the silicone hose that GM used. It will possibly last for a few years...depending on how much you drive it and how hot it can get...but I have replaced this type of hose on several Corvettes where someone took off the orange-ish colored silicone hose and put a regular back hose on it. It is not hat big of a deal...until it fails.
DUB