hesitation on hard acceleration - JeepForum.com
Search  
Sign Up   Today's Posts
User: Pass: Remember?
Advertise Here
Jeep Home Jeep Forum Jeep Classifieds Jeep Registry JeepSpace Jeep Reviews Jeep Gallery Jeep Clubs Jeep Groups Jeep Videos Jeep Events Jeep Articles
Go Back JeepForum.com > General Technical Discussions > Engines & Drivetrain > hesitation on hard acceleration

FS: Wrangler RGB Multicolor Fog Light LEDs: Awesome EffectJKS Now Available at www.baseline4x4.com, Trackbars, SkidsFS: 2007-2013 Jeep Wrangler "HALO" Angel Eye Kit

Reply
Unread 07-04-2012, 05:22 PM   #1
dhardy1357
Registered User
1975 CJ5 
 
Join Date: Nov 2010
Location: waynesboro, ga
Posts: 67
hesitation on hard acceleration

while the motor is cool and choke is on everything is good. after motor warms up and choke is fully open there is a lot of hesitation when you stomp on the gas. im thinking i may need bigger jets?
its a 304 bored .060 over, rv cam, headers, msd 6a ignition with the motorcraft 2100. any suggestions, i believe the timing is advanced 13-15* IIRC.

__________________
-1975 cj5 in the making-
304 rebuilt 3/23/11
.060 over, rv cam
Cdi ignition coming soon.
dhardy1357 is offline   Reply With Quote
Unread 07-04-2012, 06:45 PM   #2
cruiser54
Web Wheeler
 
cruiser54's Avatar
1990 MJ Comanche 
 
Join Date: Oct 2009
Location: Prescott, Arizona
Posts: 10,043
Where is your distributor vacuum advance hose connected to?
cruiser54 is offline   Reply With Quote
Unread 07-04-2012, 07:45 PM   #3
dhardy1357
Registered User
1975 CJ5 
 
Join Date: Nov 2010
Location: waynesboro, ga
Posts: 67
its on the brass colored hose barb on the front choke side of the carb
__________________
-1975 cj5 in the making-
304 rebuilt 3/23/11
.060 over, rv cam
Cdi ignition coming soon.
dhardy1357 is offline   Reply With Quote
Unread 07-04-2012, 11:17 PM   #4
cruiser54
Web Wheeler
 
cruiser54's Avatar
1990 MJ Comanche 
 
Join Date: Oct 2009
Location: Prescott, Arizona
Posts: 10,043
Is that fitting above or below the throttle butterfly?
cruiser54 is offline   Reply With Quote
Unread 07-05-2012, 09:53 AM   #5
dhardy1357
Registered User
1975 CJ5 
 
Join Date: Nov 2010
Location: waynesboro, ga
Posts: 67
Im not sure where or what the throttle butterfly is
__________________
-1975 cj5 in the making-
304 rebuilt 3/23/11
.060 over, rv cam
Cdi ignition coming soon.
dhardy1357 is offline   Reply With Quote
Unread 07-05-2012, 02:00 PM   #6
cruiser54
Web Wheeler
 
cruiser54's Avatar
1990 MJ Comanche 
 
Join Date: Oct 2009
Location: Prescott, Arizona
Posts: 10,043
Inside the carb. The metal plate that opens and closes with the accelerater cable movement.
cruiser54 is offline   Reply With Quote
Unread 07-05-2012, 06:06 PM   #7
dhardy1357
Registered User
1975 CJ5 
 
Join Date: Nov 2010
Location: waynesboro, ga
Posts: 67
Im not their to check right now but I searched on google and its hooked up to where all the pics show
__________________
-1975 cj5 in the making-
304 rebuilt 3/23/11
.060 over, rv cam
Cdi ignition coming soon.
dhardy1357 is offline   Reply With Quote
Unread 07-05-2012, 06:08 PM   #8
cruiser54
Web Wheeler
 
cruiser54's Avatar
1990 MJ Comanche 
 
Join Date: Oct 2009
Location: Prescott, Arizona
Posts: 10,043
When you get home, see if there are more than 1 vacuum ports on the carb. If there are, use the one highest up on the carb.
cruiser54 is offline   Reply With Quote
Reply
Thread Tools


Suggested Threads





Jeep, Wrangler, Cherokee, Grand Cherokee, and other models are copyrighted and trademarked to Jeep/Chrysler Corporation. JeepForum.com is not in any way associated with Jeep or the Chrysler Corp.