External fuel pump
Fleet Owner
Joined: Aug 2005
Posts: 23,668
Likes: 301
From: Easton,Ks
By the way I still use my Heathkit Ignition Analyzer IO-20 that I built in 1965 on my 1994 Ford F53 and my 1995 F150. I also still use my Heathkit IM-4100 digital frequency counter.
Just the other day I hooked my Heathkit Ignition Analyzer IO-20 to my 1994 F53 and here is what it displayed:
/
Just the other day I hooked my Heathkit Ignition Analyzer IO-20 to my 1994 F53 and here is what it displayed:
/
Cargo Master
Joined: Jun 2013
Posts: 3,182
Likes: 15
From: Somewhere n North America
Here's what I'm thinking.
The Internal fuel pump is not getting power. Therefore the external fuel pump is overloaded as it is drawing all fuel by itself, which may explain why it has to run for a long time until there's enough fuel in the rail. But if it's actually on a timer, then that doesn't make any sense. Or does it?
The Internal fuel pump is not getting power. Therefore the external fuel pump is overloaded as it is drawing all fuel by itself, which may explain why it has to run for a long time until there's enough fuel in the rail. But if it's actually on a timer, then that doesn't make any sense. Or does it?
I don't think the issues (1 sec -vs- 3 min run time)(wet weather) are related to the low pressure pump.
If you don't think you are getting power to the internal pump, be sure, and of course fix it. Keep at it !!
Last edited by vjsimone; Jul 7, 2016 at 04:50 PM. Reason: Editing
Methanoholic
Joined: Mar 2009
Posts: 6,442
Likes: 8
From: Maine (NorCal Native)
I never built one, my dad did and I assume it's still on his estate, hopefully the judge will soon allow us access!
-Enjoy
fh : )_~
Moderator
Joined: Nov 2007
Posts: 22,415
Likes: 92
From: Denver Metro Area, CO
It's destined for Gary's shop/museum, maybe I can find the leads & instruction manual for it...
Thread Starter
|
Senior User
Joined: Apr 2012
Posts: 452
Likes: 0
Yes, Vincent. I'll do my best. Found the pink wire. It runs to a connector along with another pink wire. But the connector has a different color coming out of the other end. To trace it I have gobs of black tape to remove so as to make sure I have the correct wire as there appear to be quite a few the same color. Thanks for all of your help, as always! There's a bunch of great guys on here. Franklin 2, ctubutis, and Gary have been helpful to me every time I have questions. And of course you too! Talk with you soon.
Steve
Steve
Like Gary & Ctubutis state, fix all known/new problems as you move along.
I don't think the issues (1 sec -vs- 3 min run time)(wet weather) are related to the low pressure pump.
If you don't think you are getting power to the internal pump, be sure, and of course fix it. Keep at it !!
I don't think the issues (1 sec -vs- 3 min run time)(wet weather) are related to the low pressure pump.
If you don't think you are getting power to the internal pump, be sure, and of course fix it. Keep at it !!
Thread Starter
|
Senior User
Joined: Apr 2012
Posts: 452
Likes: 0
A Heathkit is a great product no matter how old it is. I'm a Ham operator and Heathkit products are the envy of everyone.
Cargo Master
Joined: Jun 2013
Posts: 3,182
Likes: 15
From: Somewhere n North America
Yes, Vincent. I'll do my best. Found the pink wire. It runs to a connector along with another pink wire. But the connector has a different color coming out of the other end. To trace it I have gobs of black tape to remove so as to make sure I have the correct wire as there appear to be quite a few the same color. Thanks for all of your help, as always! There's a bunch of great guys on here. Franklin 2, ctubutis, and Gary have been helpful to me every time I have questions. And of course you too! Talk with you soon.
Steve
Steve
You can do some continuity checking from the front to the back as well.
Last edited by vjsimone; Jul 7, 2016 at 05:02 PM. Reason: Modify text
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
Top 10 Fords at 2026 Carlisle Ford Nationals
Joe Kucinski
3 Best / 3 Worst Parts of Modern Ford Ownership
Brett Foote
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches
Pouria Savadkouei
Every 2026 Ford Engine Explained
Brett Foote
10 Ugly Ford Trucks That We Still Kinda Love
Joe Kucinski
10 Things Every Truck Owner NEEDS (2026 Edition)
Michael S. Palmer
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
FTE Legend
Joined: Jul 2010
Posts: 32,875
Likes: 48
From: Northeast, OK
Chris - I built almost exactly the same Heathkit 'scope, many years ago, and loaned it out to a friend. It never came home. So, I'd love to have that one in my "museum".
EVTM: Electrical and Vacuum Troubleshooting Manual: 1986 EVTM - ???Gary's Garagemahal.
EVTM: Electrical and Vacuum Troubleshooting Manual: 1986 EVTM - ???Gary's Garagemahal.
Moderator
Joined: Nov 2007
Posts: 22,415
Likes: 92
From: Denver Metro Area, CO
See Post #37, Gary posted the fuel portion of the Electrical & Vacuum Troubleshooting Manual, a diagnostic manual provided by Ford intended for dealership mechanics.
Subford is pretty dang good and has lots of experience & documentation (I know of him from the 87-96 forum where *everything* is computer-controlled), don't discount his advice.
Subford is pretty dang good and has lots of experience & documentation (I know of him from the 87-96 forum where *everything* is computer-controlled), don't discount his advice.
Moderator
Joined: Nov 2007
Posts: 22,415
Likes: 92
From: Denver Metro Area, CO
Chris - I built almost exactly the same Heathkit 'scope, many years ago, and loaned it out to a friend. It never came home. So, I'd love to have that one in my "museum".
EVTM: Electrical and Vacuum Troubleshooting Manual: 1986 EVTM - ???Gary's Garagemahal.
EVTM: Electrical and Vacuum Troubleshooting Manual: 1986 EVTM - ???Gary's Garagemahal.
I think I might have the leads & instruction manual someplace in my basement but don't hold out too much hope....