What is that!?!
Thread Starter
Cruising
Joined: Feb 2008
Posts: 14
Likes: 0
What is that!?!
I just swapped the carb on my motor, now there is this really loud whine coming from i dont know where, and the motor is idleing at 2000RPM. Its a holley 750 cfm double pump, the thing is, the car REALLY moves now, but i cant get it under 2000 rpm, and that whine is scaring the crap out of me!
Melting Slicks
Joined: Aug 2006
Posts: 3,429
Likes: 20
From: Kingston Ontario
I just swapped the carb on my motor, now there is this really loud whine coming from i dont know where, and the motor is idleing at 2000RPM. Its a holley 750 cfm double pump, the thing is, the car REALLY moves now, but i cant get it under 2000 rpm, and that whine is scaring the crap out of me!
Team Owner
Joined: Aug 2006
Posts: 24,125
Likes: 15
From: Columbia Missouri
You probably have a severe air leak in the carb. Hold the choke blade open and peer in and check the primary throttle butterflies down at the bottom. You need to make sure they are completely closing. It's possible something is interfering with either the butterflies themselves or the linkages. If they are completely closed when the gas pedal is not being pressed then check the edges under the carb for an air leak.
Le Mans Master
Joined: Jan 2006
Posts: 8,319
Likes: 7
From: Wilmington DE, Drive it like you stole it, 68 327 4 speed coupe
You probably have a severe air leak in the carb. Hold the choke blade open and peer in and check the primary throttle butterflies down at the bottom. You need to make sure they are completely closing. It's possible something is interfering with either the butterflies themselves or the linkages. If they are completely closed when the gas pedal is not being pressed then check the edges under the carb for an air leak.
cheers
Melting Slicks
Joined: Nov 2001
Posts: 2,668
Likes: 43
From: Eastern US XX
I just swapped the carb on my motor, now there is this really loud whine coming from i dont know where, and the motor is idleing at 2000RPM. Its a holley 750 cfm double pump, the thing is, the car REALLY moves now, but i cant get it under 2000 rpm, and that whine is scaring the crap out of me!
Drifting
Joined: Jul 2004
Posts: 1,695
Likes: 65
From: Kissimmee fl
Finalist 2021 C3 of the Year - Modified
2017 C3 of Year Finalist
Cruise-In VIII Veteran
St. Jude Donor '07
No info in your profile. what carb did you take off? Did you put a square base carb on a q-jet manifold? You will need an adapter plate if you did. It will have a vacuum leak without it.
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Thread Starter
Cruising
Joined: Feb 2008
Posts: 14
Likes: 0
I figure the only way to fix it would be to remove the damn carb and start over, new gasket, etc, fired it up, and presto! no whining! adjusted the carb a couple of times, and no high idle! happy now that i can drive it again. thanks for the help guys!