The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1973 - 1987 Chevrolet & GMC Squarebody Pickups Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 06-19-2012, 08:29 PM   #26
1972BackInBlackC10
Senior Member
 
1972BackInBlackC10's Avatar
 
Join Date: Jan 2012
Location: Estevan, Saskatchewan
Posts: 1,025
Re: truck wont stay running while driving

ok so its been awhile and i dont know if anyone above will see this or not, got sidetracked with another project but i got back to this one i put a new carb and a new fuel pump on and its still doing it, so i bought a new module and im just wondering if the silver transistor thing beside it will effect how it runs, its corroded and im not sure what the inside is like, the distributor was under water at one time i also checked the springs and vac advance and everything springs back into place properly

heres a pic of the module and silver transitor thing i took off
Attached Images
 
1972BackInBlackC10 is offline   Reply With Quote
Old 06-19-2012, 09:32 PM   #27
motornut
78K & 79C Jimmys
 
motornut's Avatar
 
Join Date: Nov 2009
Location: Ottawa Ont CANADA
Posts: 7,901
Re: truck wont stay running while driving

Quote:
Originally Posted by 1972BackInBlackC10 View Post
ok so its been awhile and i dont know if anyone above will see this or not, got sidetracked with another project but i got back to this one i put a new carb and a new fuel pump on and its still doing it, so i bought a new module and im just wondering if the silver transistor thing beside it will effect how it runs, its corroded and im not sure what the inside is like, the distributor was under water at one time i also checked the springs and vac advance and everything springs back into place properly

heres a pic of the module and silver transitor thing i took off
thats the condenser,it can do that and effect how it runs
__________________
John
1978 GMCJimmy4X4-350/203
1979 GMCJimmy4X2-305/350
motornut is offline   Reply With Quote
Old 06-19-2012, 09:35 PM   #28
1972BackInBlackC10
Senior Member
 
1972BackInBlackC10's Avatar
 
Join Date: Jan 2012
Location: Estevan, Saskatchewan
Posts: 1,025
Re: truck wont stay running while driving

so i should get a new condesor then?
1972BackInBlackC10 is offline   Reply With Quote
Old 06-20-2012, 12:16 AM   #29
motornut
78K & 79C Jimmys
 
motornut's Avatar
 
Join Date: Nov 2009
Location: Ottawa Ont CANADA
Posts: 7,901
Re: truck wont stay running while driving

Quote:
Originally Posted by 1972BackInBlackC10 View Post
so i should get a new condesor then?
Yes it looks rough, and very blurry lol
Needs a good contact
Posted via Mobile Device
__________________
John
1978 GMCJimmy4X4-350/203
1979 GMCJimmy4X2-305/350
motornut is offline   Reply With Quote
Old 06-20-2012, 12:29 AM   #30
1972BackInBlackC10
Senior Member
 
1972BackInBlackC10's Avatar
 
Join Date: Jan 2012
Location: Estevan, Saskatchewan
Posts: 1,025
Re: truck wont stay running while driving

i can get a better pic lol
1972BackInBlackC10 is offline   Reply With Quote
Old 06-20-2012, 12:40 AM   #31
VA72C10
VA72C10
 
VA72C10's Avatar
 
Join Date: Mar 2008
Location: Midlothian, VA
Posts: 25,267
Re: truck wont stay running while driving

I'd definitely replace that condenser...

...if not that, then I'd think about replacing any rubber fuel lines as they can collapse inside before they show signs of it outside and cut off the fuel flow once the engine is drawing in more gas...
__________________
Looking for a 67-72 swb or blazer project in or around VA.
VA72C10 is offline   Reply With Quote
Old 06-20-2012, 12:42 AM   #32
1972BackInBlackC10
Senior Member
 
1972BackInBlackC10's Avatar
 
Join Date: Jan 2012
Location: Estevan, Saskatchewan
Posts: 1,025
Re: truck wont stay running while driving

will do, thanks!
1972BackInBlackC10 is offline   Reply With Quote
Old 12-31-2016, 05:31 PM   #33
72C10stock6banger
Registered User
 
Join Date: Dec 2016
Location: silver spring, md
Posts: 1
Unhappy Re: truck wont stay running while driving

did you ever get this problem fixed? i have the exact same issue with my truck, starts, idles fine for an hour. drive it a block and it chokes, backfires and stalls. usually wont start right away, i let it sit for an hour or two and it will start up again, same problem again....i find its when i shift into second gear it starts to stall.
72C10stock6banger is offline   Reply With Quote
Old 12-31-2016, 08:08 PM   #34
SquareChevy
Registered User
 
SquareChevy's Avatar
 
Join Date: Dec 2016
Location: Pennsylvania
Posts: 36
Re: truck wont stay running while driving

kinks in any fuel lines? do you smell a lot of gas? could be flooding
SquareChevy is offline   Reply With Quote
Old 09-29-2019, 12:59 AM   #35
1970GMC3500Longhorn
Registered User
 
Join Date: Aug 2019
Location: Rochester, Ny
Posts: 15
Re: truck wont stay running while driving

Quote:
Originally Posted by 1972BackInBlackC10 View Post
thanks for the pics motonut i will check mine tomorrow since its been raining,
thsickc10 when im driving it feels like its losing power and when you give it gas it cuts out like its going to die, doesnt matter if you gently give it a lil bit of gas or ush the pedal in half way basically same scenario no matter what

also no pics of spark plug due to the above mentioned rain
Could it be a fuel boiling problem with the metal gas line going up the front of the hot block?
1970GMC3500Longhorn is offline   Reply With Quote
Reply

Bookmarks


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 01:36 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com