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 08-07-2015, 11:37 AM   #1
MercRising
Registered User
 
Join Date: Jun 2014
Location: Littleton
Posts: 41
Fuel Prob.....fuel just stops after 30+ minute drives!

A few times now the truck has just stopped, I'll pull over and look at the fuel filter pre-carb and there's nothing in it! The pump is still audibly running but no gas gets up to the carb. I'll sit there squeezing the rubber sections of line and hoping it's a clog or something I can knock loose but then, after several minutes...the pump will start getting gas up to the carb again and I'm off. It's happened multiple times in one trip if the trip is say 45+ minutes. It always starts back up and I get gas back at some point but crap, I could do without stalling out in traffic!!

This usually happens after 20-30+ minute drives and I'm wondering if the fuel pump is overheating? It's an external electric cheapy the prior owner put on but, it's only a year old.

Any thoughts?

I have a mechanical block pump to install but, haven't had time. Wonder if that would cure my ails??

Cheers y'all!

John
MercRising is offline   Reply With Quote
Old 08-07-2015, 11:41 AM   #2
bigmac73
Senior Member
 
bigmac73's Avatar
 
Join Date: Mar 2012
Location: Chesapeake, Va
Posts: 1,275
Re: Fuel Prob.....fuel just stops after 30+ minute drives!

make sure your tank has a vented cap or remove yours and see if it still shuts down on you,
also there is a sock filter on the fuel pick up tube in the tank it might be rusted and collapsing, I always remove them as a precaution and just run a good inline filter

and yes it could be a crappy pump, I would try the cap first
__________________
Mike
72 C-10 Cheyenne off frame resto and Upgraded to 4 wheel disk, Tilt, Dakota Digital Dash / Rear slider.
421 SBC / TH350 3000RPM Stall
Progression Ignition /Holley 750 DP/3:73 gear Eaton Limited Slip unit / 2 1/2 exhaust glasspacks
bigmac73 is offline   Reply With Quote
Old 08-07-2015, 09:13 PM   #3
ElKotze
Registered User
 
ElKotze's Avatar
 
Join Date: Nov 2014
Location: Southwest Kansas
Posts: 306
Re: Fuel Prob.....fuel just stops after 30+ minute drives!

Sounds to me like you have the wrong gas cap. You need one that's vented.
ElKotze is offline   Reply With Quote
Old 08-07-2015, 10:33 PM   #4
MercRising
Registered User
 
Join Date: Jun 2014
Location: Littleton
Posts: 41
Re: Fuel Prob.....fuel just stops after 30+ minute drives!

I hope it's this simple!
MercRising is offline   Reply With Quote
Old 08-07-2015, 11:45 PM   #5
74baggedbug
Registered User
 
Join Date: Oct 2011
Location: Houston tx
Posts: 701
Re: Fuel Prob.....fuel just stops after 30+ minute drives!

Also may be vapor lock.. Make sure none of the fuel lines are close to the manifolds
74baggedbug is offline   Reply With Quote
Old 08-07-2015, 11:51 PM   #6
MercRising
Registered User
 
Join Date: Jun 2014
Location: Littleton
Posts: 41
Re: Fuel Prob.....fuel just stops after 30+ minute drives!

Quote:
Originally Posted by 74baggedbug View Post
Also may be vapor lock.. Make sure none of the fuel lines are close to the manifolds
This is what my uncle thinks it could be. Or just a crap aftermarket electric pump that overheats after a while.
__________________
Bye bye GenI 350...hello 325 GenIII with a snail!!
MercRising 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 09:54 PM.


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