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 1967 - 1972 Chevrolet & GMC Pickups Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 05-17-2017, 05:20 PM   #1
Stocker
20' Daredevil (Ret)
 
Stocker's Avatar
 
Join Date: May 2003
Location: Jefferson State
Posts: 13,497
Starving for fuel?

Had a weird thing happen twice recently. Long steady uphill pull, engine runs fine for awhile but after a few minutes it bogs like no fuel, then takes off, then bogs over & over. Plenty of gas in the tank, runs fine downhill or level ground. Fuel lines & filter are new.

My guess is an old tired fuel pump that cannot deliver enough flow when the engine is working extra hard and needs more fuel. Sound reasonable? Has anyone had this happen before? I'm ready to replace the fuel pump -- just didn't want to start throwing parts at it.
__________________
- Mike -

1972 K20 LWB 350/350/205

RIP El Jay
Stocker is offline   Reply With Quote
Old 05-17-2017, 05:31 PM   #2
demian5
Registered User
 
demian5's Avatar
 
Join Date: Aug 2016
Location: Lake Forest, CA
Posts: 2,177
Re: Starving for fuel?

Pull sending unit and look for fuel sock issues or stuff floating in tank.

Mine did that for a while. but after many many stand on the gas instances, it appears to have gone away
__________________
"Work hard, use your vacation days."
1970 C15 GMC Long Bed
1986 C20 Scottsdale
1983 K2500 Sierra Classic Suburban 6.2
Instagram: C10sofOC
demian5 is offline   Reply With Quote
Old 05-17-2017, 06:06 PM   #3
Stocker
20' Daredevil (Ret)
 
Stocker's Avatar
 
Join Date: May 2003
Location: Jefferson State
Posts: 13,497
Re: Starving for fuel?

Thanks for the reply! I have three tanks and today it crapped out on the half-full main (cab) tank so I switched to the full left side saddle tank. It did exactly the same thing, so it doesn't seem to be tank-related.

Lucky your problem went away! Mine only appears during those extended stand-on-the-gas episodes.....
__________________
- Mike -

1972 K20 LWB 350/350/205

RIP El Jay
Stocker is offline   Reply With Quote
Old 05-17-2017, 06:14 PM   #4
geezer#99
Registered User
 
geezer#99's Avatar
 
Join Date: Aug 2009
Location: Bowser
Posts: 13,512
Re: Starving for fuel?

It's fuel pump replacement time!!
geezer#99 is online now   Reply With Quote
Old 05-17-2017, 06:35 PM   #5
Stocker
20' Daredevil (Ret)
 
Stocker's Avatar
 
Join Date: May 2003
Location: Jefferson State
Posts: 13,497
Re: Starving for fuel?

Checked my records -- it was last replaced in Oct. 1991. Guess I got my money's worth.
__________________
- Mike -

1972 K20 LWB 350/350/205

RIP El Jay
Stocker 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 08:33 AM.


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