dead spot on the pedal
Thread Starter
Instructor
Joined: Dec 2005
Posts: 198
Likes: 0
From: Rogers Arkansas
St. Jude Donor '06
dead spot on the pedal
When I step on the pedal, the car wants to pause before getting gas into the engine. Or, at least that what it feels like... It does it any any speed or rpm... Anybody knw if this is a gas/air issue, timing issue?
Race Director
Joined: Apr 2000
Posts: 17,676
Likes: 201
From: Who says "Nothing is impossible" ? I've been doing nothing for years.
A lot of times stumble or hesitationit is a lean condition, could be an air leak at the base of the carb or in the vacuum lines or you could jet up a couple of sizes and see if that fixes it 
Tech Contributor
Joined: Aug 1999
Posts: 14,382
Likes: 6,401
From: At my Bar drinking and wrenching in Lafayette Colorado
There are multiple possible causes. In order of occurance:
1. Bad/worn accelertor pump or bad accel pump carb circuit
2. Incorrect timing (retarded)
3. Inoperable vacuum advance
4. Lean carb (various causes ranging from incorrect jetting to low float or jammed power piston)
Good luck with the tuning!
1. Bad/worn accelertor pump or bad accel pump carb circuit
2. Incorrect timing (retarded)
3. Inoperable vacuum advance
4. Lean carb (various causes ranging from incorrect jetting to low float or jammed power piston)
Good luck with the tuning!
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
Originally Posted by rbird
When I step on the pedal, the car wants to pause before getting gas into the engine. Or, at least that what it feels like... It does it any any speed or rpm... Anybody knw if this is a gas/air issue, timing issue?
Also dont forget about the accellerator cable itself, these stretch over time, and the slack can cause the poor throttle response you describe
.02
Last edited by sweethence; Mar 17, 2006 at 07:23 AM.
Le Mans Master
Joined: Jan 2003
Posts: 6,575
Likes: 1
From: Tuttle OK
Cruise-In VIII Veteran
Originally Posted by sweethence
Also dont forgat about the accelorator cable itself, these strech over time, and the slack can cause poor throttle response you describe
.02
.02
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