HELP! my fury won't idle all of the sudden

ninjafury · 06-29-2008, 02:57 PM

I have a 66 fury III with a 318 poly. It is my daily driver & up untill today it ran well. I recently replaced several parts, did a full tune up & I have been driving it daily without many problems. I did have a problem with the connections going throug hthe firewall but I have solved them. The car has great spark, it's getting fuel & I don't think the timing chain slipped. It will start & run great if I keep the RPMS up but the second I let my foot off the gas it dies! I'm am out of ideas. Anyone?

413 · 07-02-2008, 01:57 AM

Is your choke stuck ? Semi blocked jet? Is the carb a Holley? blown power valve?
Sounds like carb problem.

Doc · 07-02-2008, 02:56 AM

Did you do anything to it just before this prob started?

naughtyus maximus · 07-02-2008, 05:08 AM

hi
it sounds like a vaccum pipe to me

Doc · 07-02-2008, 06:46 PM

UNLESS it is not a plugged idle circuit in the carb .... a broken vacuum line sounds like what it is.

rockeralan · 09-18-2008, 11:22 AM

totally agree with the vac pipe theory, this coupled with the extra air getting in through the vac pipe would cause a very VERY lean mixture and no idle , rev her up and it will richen up and run , l think you're spot on , anyone got a right hand rear fender arch trim for a '69 Fury lll convertible ?

Commando · 09-18-2008, 01:15 PM

That is that same issue I am having with my 400, vacuum leak. You may want to do what I am inprocess of doing, trace your vacuum lines and run a propane torch unlit over the lines to see if the idle changes, when it does there is your leak, also run it over the gaskets on the intake and the carb. Hopefully you find your leak, if not you are in my boat and I am still trying to track down the leak.

67 GTX · 09-18-2008, 02:05 PM

make sure your idle circuit isn't clogged

06-29-2008, 02:57 PM	#1 (permalink)
ninjafury Junior Member Join Date: Mar 2008 Posts: 3	HELP! my fury won't idle all of the sudden I have a 66 fury III with a 318 poly. It is my daily driver & up untill today it ran well. I recently replaced several parts, did a full tune up & I have been driving it daily without many problems. I did have a problem with the connections going throug hthe firewall but I have solved them. The car has great spark, it's getting fuel & I don't think the timing chain slipped. It will start & run great if I keep the RPMS up but the second I let my foot off the gas it dies! I'm am out of ideas. Anyone?

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07-02-2008, 01:57 AM	#2 (permalink)
413 Member Join Date: Jun 2008 Posts: 49	Is your choke stuck ? Semi blocked jet? Is the carb a Holley? blown power valve? Sounds like carb problem.

07-02-2008, 02:56 AM	#3 (permalink)
Doc MasterDebater Join Date: Jun 2008 Location: nw lower Meeeechigan Posts: 673	Did you do anything to it just before this prob started?

07-02-2008, 05:08 AM	#4 (permalink)
naughtyus maximus Junior Member Join Date: Jun 2008 Posts: 4	hi it sounds like a vaccum pipe to me

07-02-2008, 06:46 PM	#5 (permalink)
Doc MasterDebater Join Date: Jun 2008 Location: nw lower Meeeechigan Posts: 673	UNLESS it is not a plugged idle circuit in the carb .... a broken vacuum line sounds like what it is.

09-18-2008, 11:22 AM	#6 (permalink)
rockeralan Junior Member Join Date: Sep 2008 Posts: 1	totally agree with the vac pipe theory, this coupled with the extra air getting in through the vac pipe would cause a very VERY lean mixture and no idle , rev her up and it will richen up and run , l think you're spot on , anyone got a right hand rear fender arch trim for a '69 Fury lll convertible ?

09-18-2008, 01:15 PM	#7 (permalink)
Commando Senior Member Join Date: Nov 2007 Location: New Jersey Posts: 406	That is that same issue I am having with my 400, vacuum leak. You may want to do what I am inprocess of doing, trace your vacuum lines and run a propane torch unlit over the lines to see if the idle changes, when it does there is your leak, also run it over the gaskets on the intake and the carb. Hopefully you find your leak, if not you are in my boat and I am still trying to track down the leak.

09-18-2008, 02:05 PM	#8 (permalink)
67 GTX Super Moderator Join Date: Jul 2008 Posts: 328	make sure your idle circuit isn't clogged