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holley 750vac #480081 09/26/09 11:51 AM 09/26/09 11:51 AM
Joined: Jul 2006 Posts: 123 Edgewater, Md swinger73 OP member
swinger73 OP member Joined: Jul 2006 Posts: 123 Edgewater, Md	I just swapped out a holley 650dp for a 750vac/sec on my dart. I have a problem getting the new carb adj. I adjusted the float bowls, but still can not get it to not run so rich it is blowing fuel out the tail pipes. I did buy it used the guy said it was rebuilt with a new power valve but I can turn the mixture screws all the way in with no change did i get scammed and the power valve is blown or is there another issue. http://i14.photobucket.com/albums/a302/dkbold/100_0498.jpg

Re: holley 750vac [Re: swinger73] #480082 09/26/09 11:57 AM 09/26/09 11:57 AM
Joined: Jul 2006 Posts: 123 Edgewater, Md swinger73 OP member
swinger73 OP member Joined: Jul 2006 Posts: 123 Edgewater, Md	Wow more info I just noticed I have oil dripping out of the header collecter gaskets what the hell happened I just changed carbs HELP http://i14.photobucket.com/albums/a302/dkbold/100_0498.jpg

Re: holley 750vac [Re: swinger73] #480083 09/26/09 11:59 AM 09/26/09 11:59 AM
Joined: Feb 2003 Posts: 10,232 Someplace you aren't S SomeCarGuy I Live Here
SomeCarGuy I Live Here S Joined: Feb 2003 Posts: 10,232 Someplace you aren't	Tear it down and check it out. The oil dripping is just soot that is now covered in the over rich mixture you are getting into the engine. I bet you will see gas dripping out the venturi area while running if you look down the throat of the carb I want my fair share

Re: holley 750vac [Re: swinger73] #480084 09/26/09 12:00 PM 09/26/09 12:00 PM
Joined: Jan 2003 Posts: 9,826 las vegas 70AARcuda master
70AARcuda master Joined: Jan 2003 Posts: 9,826 las vegas	you should tear it apart and check everything... make sure the gasket under the power valve is installed correctly, sometimes they will slide to one side or the other and cause an internal fuel leak... Tony 70 AARCuda Vitamin C 71 Dart Swinger 360 10.318 @ 128.22(10-04-14 Bakersfield) 71 Demon 360 10.666 @122.41 (01-29-17 @ Las Vegas) 71 Duster 408 (10.29 @ 127.86 3/16/19 Las Vegas)

Re: holley 750vac [Re: 70AARcuda] #480085 09/26/09 12:02 PM 09/26/09 12:02 PM
Joined: Jan 2003 Posts: 5,444 Indiana Y YO7_A66 master
YO7_A66 master Y Joined: Jan 2003 Posts: 5,444 Indiana	Pull the needle/seat assemblies too and clean them up. 1970 YO7 A66 [Canadian Export] F8 Challenger 340 (Currently in shop for stroker assy.)

Re: holley 750vac [Re: YO7_A66] #480086 09/26/09 04:29 PM 09/26/09 04:29 PM
Joined: Feb 2003 Posts: 21,318 Manitoba, Canada DaytonaTurbo Too Many Posts
DaytonaTurbo Too Many Posts Joined: Feb 2003 Posts: 21,318 Manitoba, Canada	Easily could be a blown/defective power valve. But check down the carb throat for leaks too.

Re: holley 750vac [Re: DaytonaTurbo] #480087 09/26/09 05:31 PM 09/26/09 05:31 PM
Joined: Jul 2006 Posts: 123 Edgewater, Md swinger73 OP member
swinger73 OP member Joined: Jul 2006 Posts: 123 Edgewater, Md	Thanks guys I put the 650dp back on the car. Still would rather have the 750vac so I am going to tear it all the way down and rebuild it myself. I only paid 80 bucks for it so still not a bad deal http://i14.photobucket.com/albums/a302/dkbold/100_0498.jpg

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