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4180 holley trouble

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Old Oct 14, 2007 | 06:59 PM
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4180 holley trouble
i have a 4180 on a rebuilt 351w in my 74 bronco. the other day, I was driving and I mashed on the petal and made it kick down. when I let off, it was like I still had my foot on the petal. I had to turn it off. I pop the hood and made sure nothing was touching the accel. linkage. it wasnt so I adjusted the idle on the driverside down. does anyone have a clue what caused this????
It scared the heck out of me!
 
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Old Oct 15, 2007 | 01:37 AM
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do you have a return spring carb?
 
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Old Oct 15, 2007 | 10:19 AM
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It's a Holley 4180. Not sure if it is a return spring!
 
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Old Oct 15, 2007 | 10:18 PM
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well it has to have a spring on the linkage in order for it to close when you let off the throttle
 
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Old Oct 16, 2007 | 09:30 AM
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Yes, and the spring is still attached to the fire wall
 
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Old Oct 16, 2007 | 09:22 PM
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are we talking about the same spring? the one im talking about connects to the carb linkage and should have a mount or something on the intake or whatever or some custom mount made for the spring to hook to
 
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Old Oct 17, 2007 | 12:17 PM
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Spring pulling foward or towards the fire wall?
 
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Old Oct 17, 2007 | 09:48 PM
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i dunno where ever it mounts too or you can put it. as long as the carb linkage has a spring on it so even if you dont have the throttle hooked up it will make the carb linkage spring back to closed.
 
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Old Oct 18, 2007 | 11:05 AM
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Yep! Spring is there. Is there any other thing that it could be??
 
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Old Oct 18, 2007 | 09:56 PM
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not sure? the only way i could see the throttles sticking like that is if the butterflies aren't closing all the way or something
 
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Old Oct 22, 2007 | 05:46 AM
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Could it have been the linkage hitting the bottom of the air filter housing. Maybe you took the filter off to check. How about the floor mat? Both of these items have caused my throttle to stick.
 
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Old Oct 23, 2007 | 01:27 PM
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Neither of those. I was told it could be something on the Choke side. Would it be worth buying a Truck Avenger or rebuilding my 4180. I am on a tight budget so give me ideas. Is there another carb you recommend???
 
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Old Oct 23, 2007 | 05:35 PM
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how dirty is the carb?
 
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Old Oct 23, 2007 | 07:46 PM
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old and dirty
 
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Old Oct 23, 2007 | 08:05 PM
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hell id just get a regular old 4150 or whatever 650cfm vacume secondary carb and it should be alright they are only like 250-300 bucks if u can get ahold of a used one or something on ebay im sure you could get it for cheaper
 
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