Burning up electric fuel pumps... - Team Camaro Tech
Troubleshooting Diagnosing problems done here.

 
LinkBack Thread Tools Display Modes
post #1 of 15 (permalink) Old Oct 18th, 06, 01:39 PM Thread Starter
 
Join Date: Oct 2006
Location: Arizona
Posts: 18
Burning up electric fuel pumps...

I've now gone through my second Holley electric fuel pump. The motor has less than 100 miles on it. The pump is mounted in front of the rear differential at the lowest point possible against the underbody. I have a nice big fuel filter between the stock tank and the pump. Could it be that it is a gravity fed pump and it runs dry using the stock tank in its stock location?

Thanks,

Gary V.
vfam3 is offline  
Sponsored Links
Advertisement
 
post #2 of 15 (permalink) Old Oct 18th, 06, 01:53 PM
Gold Lifetime Member
Jim
 
Join Date: Dec 1999
Location: Yorkville, Illinois USA
Posts: 22,121
Re: Burning up electric fuel pumps...

Those pumps are cooled by the fuel, but you have to have flow for that to happen. Suggest you put in a bypass regulator and a return line, that will keep the fuel moving and the pump cool.





To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.



To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
New website for my vert is coming together. Do ya like the slide show on the home page?
JimM is offline  
post #3 of 15 (permalink) Old Oct 18th, 06, 03:01 PM
Retired
Jim
 
click's Avatar
 
Join Date: Jun 2001
Location: Central Minnesota
Posts: 15,968
Re: Burning up electric fuel pumps...

Any chance you have the power lead ON all the time, even with key off? I burned mine up by forgetting to disconnect the power to it when I had it as a temp pump on vacation.

JimM knows my fuel pump intimately too

Click..is Jim..former owner of a 69RS-LM1 350/255 - 700r
"There will come a time when you believe everything is finished,
That will be the beginning." Louis L'Amour
click is offline  
 
post #4 of 15 (permalink) Old Oct 19th, 06, 09:39 AM Thread Starter
 
Join Date: Oct 2006
Location: Arizona
Posts: 18
Re: Burning up electric fuel pumps...

Thanks, I suspect it is, indeed, a cooling issue. I'll do a search on configuring your suggested set up.
vfam3 is offline  
post #5 of 15 (permalink) Old Oct 19th, 06, 09:43 AM Thread Starter
 
Join Date: Oct 2006
Location: Arizona
Posts: 18
Re: Burning up electric fuel pumps...

I don't think so. I have a toggle switch handling the power. Thank you for your thoughts.
vfam3 is offline  
post #6 of 15 (permalink) Old Oct 19th, 06, 10:51 AM
Banned
Rob
 
satz28's Avatar
 
Join Date: Aug 2005
Location: NW Suburban Chicago Area
Posts: 8,283
Re: Burning up electric fuel pumps...

Quote:
Originally Posted by vfam3 View Post
I have a nice big fuel filter between the stock tank and the pump. Could it be that it is a gravity fed pump and it runs dry using the stock tank in its stock location?
Thanks,
Gary V.
Is the pump designed to overcome the resistance of the fuel filter?
satz28 is offline  
post #7 of 15 (permalink) Old Oct 19th, 06, 11:31 AM
Senior Tech
Chris
 
Join Date: Jun 2005
Location: central Ky
Posts: 480
Re: Burning up electric fuel pumps...

what size wire supplying power, and are you running the power thru a relay and not directly thru the switch itself ?
low/reduced voltage will burn-up a hi load demand appliance.

'69 SS X66 Camaro
454, TH400 & GearVendor, 12 bolt
'82 Corvette.
stock
'81 Camaro Pro Bracket car.
406, TH350, 10 bolt, NHRA #3148
82Vettrin is offline  
post #8 of 15 (permalink) Old Oct 19th, 06, 03:04 PM Thread Starter
 
Join Date: Oct 2006
Location: Arizona
Posts: 18
Re: Burning up electric fuel pumps...

Quote:
Originally Posted by JimM View Post
Those pumps are cooled by the fuel, but you have to have flow for that to happen. Suggest you put in a bypass regulator and a return line, that will keep the fuel moving and the pump cool.
Will I need to weld in a return inlet?
vfam3 is offline  
post #9 of 15 (permalink) Old Oct 19th, 06, 03:13 PM
Gold Lifetime Member
Jim
 
Join Date: Dec 1999
Location: Yorkville, Illinois USA
Posts: 22,121
Re: Burning up electric fuel pumps...

You'll need to add one if there isn't one there.
JB weld or epoxy will hold it fine, but the tank will need to come down.





To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.



To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
New website for my vert is coming together. Do ya like the slide show on the home page?
JimM is offline  
post #10 of 15 (permalink) Old Oct 19th, 06, 04:43 PM Thread Starter
 
Join Date: Oct 2006
Location: Arizona
Posts: 18
Re: Burning up electric fuel pumps...

Quote:
Originally Posted by JimM View Post
You'll need to add one if there isn't one there.
JB weld or epoxy will hold it fine, but the tank will need to come down.
Sounds like a project I can handle. Thank you very much!
vfam3 is offline  
post #11 of 15 (permalink) Old Oct 20th, 06, 02:37 PM
Senior Tech
Dave
 
Join Date: Oct 2005
Location: Rhode Island
Posts: 1,356
Re: Burning up electric fuel pumps...

As stated, I bet a return line fixes you right up, plus you will need the proper pressure regulator (also as stated).

I put Accel DFI on my '68 and I plumbed the return line using an additional steel line, which I routed into the filler neck with a 90 degree brass fitting. Works real good.

I also mounted the fuel pump using a bracket mounted on rubber isolators, then I wrapped Dynamat around the pump (only the clamping area) itself, so that when I tighten the stainless hose clamps, the clamps are against the Dynamat material. This reduced the fuel pump noise to almost nothing. Some of those electric fuel pumps can get really loud when mounted right to the chassis!

-

Dave F. in Rhode Island
'68 Camaro SS Accel DFI 454 (SOLD - I'm a boring Corvette owner now)
Bought my first big-block Chevy in 1970
Chevy-SS is offline  
post #12 of 15 (permalink) Old Oct 20th, 06, 04:23 PM
Senior Tech
Bill
 
Join Date: Apr 2004
Location: Raritan NJ
Posts: 1,323
Re: Burning up electric fuel pumps...

1.) Use a return line
2.) Use a relay and good quality wire
WildBillyT is offline  
post #13 of 15 (permalink) Old Oct 24th, 06, 09:17 AM
Senior Tech
Mark
 
Join Date: Mar 2001
Location: Janesville, WI
Posts: 618
Re: Burning up electric fuel pumps...

Summit carrys a part that attaches between the fuel tank and the filler neck where you could attach your fuel return line. Youll probably still have to drop the tank to access it though.. I havnt used it but seen it in anouther thread..

Mark
Long Gone: 1984 Z28, 1989 RS
Current : 1967 Coupe w/350, 2010 2SS

My Photobucket >>
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
dragon0123 is offline  
post #14 of 15 (permalink) Old Oct 24th, 06, 03:36 PM Thread Starter
 
Join Date: Oct 2006
Location: Arizona
Posts: 18
Re: Burning up electric fuel pumps...

Just got off the phone with Summit and got the new pump, return kit and relay kit on the way. Thank you. I'm sure this will solve all issues and I can burn rubber with confidence!
vfam3 is offline  
post #15 of 15 (permalink) Old Nov 8th, 06, 05:20 PM
Tech Team
jim
 
Join Date: Nov 2006
Location: Birmingham, Alabama
Posts: 67
Re: Burning up electric fuel pumps...

Quote:
Originally Posted by vfam3 View Post
I don't think so. I have a toggle switch handling the power. Thank you for your thoughts.
I hope you NEVER, NEVER, NEVER use the toggle switch as the master power off. VERY dangerous and against all safety rules of every organization and track everywhere. If you get in an accident or a fire breaks out the ignition switch (and rear cutoff if a race car) must be able to stop all electric current to the ignition and fuel system. Its ok to use the toggle as a 2ndary switch but it must be behind the key switch. You dont want the pump to keep on shooting fuel into an engine bay that might catch on fire.
baracda is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Team Camaro Tech forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address.
NOTE we receive a lot of registrations with bad email addresses. IF you do not receive your confirmation email you will not be able to post. contact support and we will try and help.
Be sure you enter a valid email address and check your spam folder as well.



Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Similar Threads
Thread Thread Starter Forum Replies Last Post
Electric Fuel Pump 86 Camaro robbigdog Camaro Tech 2 Oct 13th, 05 05:03 PM
Fuel pump is dead, EFI pumps reliable/good? 67RS502 Performance 3 Jan 20th, 05 02:59 AM
mounting electric fuel pump??? BBCamaro Performance 6 Feb 9th, 03 08:51 PM
Electric Fuel Pump 2zMax Engine 9 Feb 22nd, 02 08:30 AM
electric fuel pump===> mechanical help! rogleete Troubleshooting 4 Jan 1st, 02 09:25 AM

Posting Rules  
You may post new threads
You may 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
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome