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Author
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Topic: Carb Help please
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Stang28965
Gearhead Posts: 353
From: Webster New York USA
Registered: Mar 2001
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posted 05-06-2001 09:28 PM
   
Ok, here goes..... I have a Holley 4160, My secondary were not opening but that problem is fixed (I put the yellow spring you guys suggested in) Sometimes when my car is sitting it smokes like crazy (to much gas) It never use to do this, I went down 2 sizes from the stock jets. Could my Float be adjusted to high? ( the car will idle very nice and smooth) Also if you hit the throttle hard my car hesitates then goes like hell. I thought it was the secondary opening but I put the stiffest spring in and it still did it. Also the exhaust smell in the car is terrible, It seems like it comes through the vents. But I have an all new exhaust on it and it does not leak. Its a very annoying smell, is this just something I should deal with for having an older car? Also this engine was 100% rebuilt 2,000 miles ago. Please help  ) Thanks for taking the time to read this
-Jeff
1965 Mustang Coupe
289 Bored .030over
302 Heads
420 lift Cam
H-Pipe with dynomax mufflers
8 inch rear with 3.55's
4speed trans
http://members.cardomain.com/stang65
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richard bohm
Gearhead Posts: 370
From: tucson,az-luray,va
Registered: May 2001
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posted 05-07-2001 04:03 AM
ok start by making sure your idle mixture screws are adjusted properly. turn them all the way in untill they just touch the seats. do not force them down. then back them out
1 1/2 turns. start the engine and wait till the idle stabilizes. then adjust the mixture screws untill you have the best idle and higest vacuum possible. if when you turn the screws nothing happens then you have an internal leak and the carb needs to come apart. after the mixture is correct then adjust the float leval untill it is just below the leval of the sight plug. this should cure your problem.
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JAAZZY
Gearhead Posts: 723
From: Bay Area, CA
Registered: Apr 2001
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posted 05-07-2001 03:25 PM
Check the power valve. The original Holley I used to run always seemed to go through these. It would idle well when the valve was new but degrade with a little bit of time. I never completely got rid of the stumble though I got close. I eventually bought the newer style like you have but in the end I gave up and went with Holley's fuel injection.As far as exhaust smell in the car... You should be able to seal and holes or cracks in your firewall with expanding foam and/or silicon. It worked well for me. Check the area around the steering column. That gasket is large and usually old and cracked. That one is big enough to let a lot of exhaust smell into the car. Good luck. ------------------
65 Stang - TFS SH Stage III Heads, Nash 5 speed, Fuel Injection, etc...
2001 - Z06
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74merc
Gearhead Posts: 731
From: Demopolis AL
Registered: Jun 99
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posted 05-07-2001 07:42 PM
Holley Pro-jection?
which model?
how do you like it?
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JAAZZY
Gearhead Posts: 723
From: Bay Area, CA
Registered: Apr 2001
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posted 05-08-2001 11:50 AM
It is the original model that came out quite a few years ago. Four injectors and rated at 970cfm. I really do like it. It made my car much more streetable. It was easy to start up and drive around without any need to warm it up. It also improved my throttle response. I wish I could give you numbers but I didn't dyno the car and I didn't do before and after 1/4 mile comparisons. The only drawback I see is that I don't know how easy it is to modify it with larger injectors for higher horsepower applications.
The new version I believe can even be programmed with a PC. quote:
Originally posted by 74merc:
Holley Pro-jection?
which model?
how do you like it?
------------------
65 Stang - TFS SH Stage III Heads, Nash 5 speed, Fuel Injection, etc...
2001 - Z06
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richard bohm
Gearhead Posts: 370
From: tucson,az-luray,va
Registered: May 2001
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posted 05-09-2001 12:05 AM
if you decide to use the holley pro-jection
go with the pro 4di. it is digital, tuned with a laptop, and has a closed loop system so the computer can adjust the fuel flow by itself.
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Stang28965
Gearhead Posts: 353
From: Webster New York USA
Registered: Mar 2001
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posted 05-09-2001 06:22 AM
Thanks for helping me out guys. I adjusted the carb and it seems to run awesome.. It use to suck, I'd take a corner fast in first and give it gas and i would have that studder and it just threw off the whole fun of taking the corner fast. Know what i mean?
thanks again------------------
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74merc
Gearhead Posts: 731
From: Demopolis AL
Registered: Jun 99
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posted 05-09-2001 09:40 AM
sweet
I'd like to get one of those someday...
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JAAZZY
Gearhead Posts: 723
From: Bay Area, CA
Registered: Apr 2001
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posted 05-09-2001 11:26 AM
My system is a closed loop system as well but isn't as advanced as the new 4di.I will be tuning it on a dyno after the motor goes in. This is not too far away now. I will post my dyno results when I get them. quote:
Originally posted by richard bohm:
if you decide to use the holley pro-jection
go with the pro 4di. it is digital, tuned with a laptop, and has a closed loop system so the computer can adjust the fuel flow by itself.
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65 Stang - TFS SH Stage III Heads, Nash 5 speed, Fuel Injection, etc...
2001 - Z06
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