#1  
Old 12-26-2015, 10:11 PM
1966goat's Avatar
1966goat 1966goat is offline
Senior Member
 
Join Date: Mar 2008
Location: San Jose, CA
Posts: 217
Send a message via AIM to 1966goat Send a message via Skype™ to 1966goat
Default Stumbling & stalling off idle - bad gas?

This is for a SBC 350. Car runs fine on the highway and in park, but at a light she starts shaking a little, then off-idle she shuts off. She starts right up after. This happened mostly on some short hills.

Put in some seafoam and filled the tank with premium, she is running a little better, she stays alive but still stumbles. Should I add heet and change the fuel filter?

__________________

461ci, Edelbrock 72cc heads, KB 15cc dished pistons, comp xe274, PRW 1.5 roller rockers, Performer RPM intake, Holley 80508 750cfm, RARE oversized manifolds, Pypes X-pipe Exhaust
  #2  
Old 12-26-2015, 10:28 PM
Blued and Painted's Avatar
Blued and Painted Blued and Painted is offline
Ultimate Warrior
 
Join Date: Apr 2013
Location: Granby Colorado
Posts: 2,430
Default

carbureted or injected?

__________________
Sent from my hand-me-down I-Pad
Bull Nose Formula-461, 6x-4, Q-jet, HEI, TH400, 8.5 3.08, superslowjunk
  #3  
Old 12-26-2015, 11:34 PM
1966goat's Avatar
1966goat 1966goat is offline
Senior Member
 
Join Date: Mar 2008
Location: San Jose, CA
Posts: 217
Send a message via AIM to 1966goat Send a message via Skype™ to 1966goat
Default

Carbed 1978 SBC 350.

Guy said car sat for 4 months without stabil.

__________________

461ci, Edelbrock 72cc heads, KB 15cc dished pistons, comp xe274, PRW 1.5 roller rockers, Performer RPM intake, Holley 80508 750cfm, RARE oversized manifolds, Pypes X-pipe Exhaust
  #4  
Old 12-27-2015, 01:03 AM
77 TRASHCAN's Avatar
77 TRASHCAN 77 TRASHCAN is offline
Ultimate Warrior
 
Join Date: Oct 2008
Location: 31May2013 Temporary home to the world's widest (that we know of) tornado. Lord, NO more Please...
Posts: 5,227
Default

would it have an reel rock carb on it?

__________________
1977 Black Trans Am 180 HP Auto, essentially base model T/A.
I'm the original owner, purchased May 7, 1977.

Shut it off
Shut it off
Buddy, I just shut your Prius down...
  #5  
Old 12-27-2015, 07:14 AM
steve25 steve25 is offline
Ultimate Warrior
 
Join Date: May 2008
Location: Westchester NY
Posts: 10,196
Default

Time to tare the carb apart and clean the crap out from today's Ethenol cut fuel, gas tank additive will not fully help at times !

__________________
If you need a Radio at the beach your missing the whole point!
  #6  
Old 12-27-2015, 08:55 AM
shaker455's Avatar
shaker455 shaker455 is offline
Ultimate Warrior
 
Join Date: Feb 2002
Location: NH
Posts: 4,120
Default

Get a carb kit like a Walker and go thru it.
Give it a good cleaning and use the new accel pump included
Record the stamped jet sizes and primary metering rods

__________________
71' Trans Am
  #7  
Old 12-27-2015, 09:37 AM
Half-Inch Stud's Avatar
Half-Inch Stud Half-Inch Stud is offline
Ultimate Warrior
 
Join Date: Jul 2000
Location: BlueBell, Alabama U.S.A.
Posts: 16,636
Default

suspect some plugs getting wet-fouled. Carb redo with idle enrichment may help close the Primaries.

Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 03:49 AM.

 

About Us

The PY Online Forums is the largest online gathering of Pontiac enthusiasts anywhere in the world. Founded in 1991, it was also the first online forum for people to gather and talk about their Pontiacs. Since then, it has become the mecca of Pontiac technical data and knowledge that no other place can surpass.

 

Cold Case Radiators

Cold Case Radiators is a Max Performance company that produces high end aluminum performance radiators at a price point that won't break the bank. Polished and stamped tanks. 2 rows of 1" tubes. Lifetime Warranty.

GTOG8TA.com

GTOG8TA.com is a Max Performance company that manufacturers parts for the 04-06 GTO, 08-09 G8, and 93-02 Firebird/Trans Am platforms.

Copyright © 2017