Automotive Forums .com - the leading automotive community online! Automotive Forums .com - the leading automotive community online!
Automotive Forums .com - the leading automotive community online! 
-
Latest | 0 Rplys
Go Back   Automotive Forums .com Car Chat > Chevrolet > Chevrolet Classics
Reply Show Printable Version Show Printable Version | Email this Page Email this Page | Subscription Subscribe to this Thread
 
Thread Tools
Old 08-11-2014, 12:13 AM   #1
Ixeye
AF Newbie
 
Join Date: Aug 2014
Location: Sterling, Colorado
Posts: 1
Thanks: 0
Thanked 0 Times in 0 Posts
1978 k10 not getting gas

1978 k10 Chevy Truck- coughs and sputters on 300 mile drive home. when I get to fixing it then will not start. changed out fuel filter- no change. changed out fuel pump-no change. troubleshooting: can suck fuel to the fuel pump but the "cam" rod appears to be stuck or not moving. does give some vacuum pump effect though. dual tank selector switch is clicking so solenoid appears to be good. appears that electric fuel pump is the route to take. buy AC delco fuel pump and mount near selector switch but now cannot figure out how to know which wire is "hot" to connect to near the dash. What is the correct method (in detail) to find the hot wire so that I turn ignition key, wait couple of seconds then whoala, I have fuel to the fuel filter off of the carb?

Brent
Ixeye is offline   Reply With Quote
Old 08-11-2014, 08:10 AM   #2
maxwedge
A990 racer
 
Join Date: Mar 2002
Location: Chestertown, New York
Posts: 16,946
Thanks: 25
Thanked 369 Times in 363 Posts
Re: 1978 k10 not getting gas

User a test lite on the various circuits in the fuse box to see which is ignition powered.
__________________
maxwedge is offline   Reply With Quote
Old 08-15-2014, 03:47 PM   #3
j cAT
AF Fanatic
 
Join Date: Oct 2007
Location: EVERETT, Massachusetts
Posts: 10,898
Thanks: 8
Thanked 432 Times in 431 Posts
Re: 1978 k10 not getting gas

Quote:
Originally Posted by Ixeye View Post
1978 k10 Chevy Truck- coughs and sputters on 300 mile drive home. when I get to fixing it then will not start. changed out fuel filter- no change. changed out fuel pump-no change. troubleshooting: can suck fuel to the fuel pump but the "cam" rod appears to be stuck or not moving. does give some vacuum pump effect though. dual tank selector switch is clicking so solenoid appears to be good. appears that electric fuel pump is the route to take. buy AC delco fuel pump and mount near selector switch but now cannot figure out how to know which wire is "hot" to connect to near the dash. What is the correct method (in detail) to find the hot wire so that I turn ignition key, wait couple of seconds then whoala, I have fuel to the fuel filter off of the carb?

Brent
been a while since I had this issue. I remember that the install of the fuel pump on the side of the block can be tricky. may have to rotate the engine so it is at the proper position...

put old fuel pump to fuel line move pump arm does it suck fuel ? if so then the cam maybe damaged ..never seen it before but I guess this old anything can happen.

installing the electric pump on the fuel line will require a regulator and the connection to the return line. fuel pressure is I guess 6-7 PSI. with typical q jet carb...
j cAT is offline   Reply With Quote
Old 08-15-2014, 04:07 PM   #4
DeltaP
AF Enthusiast
 
Join Date: Oct 2011
Location: Ft Lauderdale, Florida
Posts: 953
Thanks: 13
Thanked 121 Times in 120 Posts
Re: 1978 k10 not getting gas

Remove the fuel pump and try to reinstall it as j caT says. You might not have it on the camshaft eccentric properly. Sometimes people used to manage to get the arm lever hooked over the cam, thus it wont function. I've never seen a cam eccentric for the fuel pump get so worn out it wouldn't function. Going with an electric pump creates problems you don't need with this old,(but good), truck.
DeltaP is offline   Reply With Quote
Old 10-05-2014, 02:14 PM   #5
mike.t
AF Newbie
 
mike.t's Avatar
 
Join Date: Oct 2014
Location: winnetka, California
Posts: 1
Thanks: 0
Thanked 0 Times in 0 Posts
Re: 1978 k10 not getting gas

Remove the fuel pump and plate. Where is the rod? All the way up/down/middle? Is the fuel pump arm under the rod? Push on the rod and see if it moves. If so pull it out put some heavy grease on it and put it back. Should stay in place so you can mount pump under it.
Good luck
__________________
"There is no shame in not knowing; the shame lies in not finding out!"
mike.t is offline   Reply With Quote
 
Reply

POST REPLY TO THIS THREAD


Tags
1978 , fuel , k10 , problem , pump
Go Back   Automotive Forums .com Car Chat > Chevrolet > Chevrolet Classics

Thread Tools

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



All times are GMT -5. The time now is 06:31 AM.

Community Participation Guidelines | How to use your User Control Panel

Powered by: vBulletin | Copyright Jelsoft Enterprises Ltd.
 
 
no new posts