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03-28-2015, 01:40 PM
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#1
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Member
Join Date: Mar 2015
Posts: 83
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Won't stay running
1989 pace Arrow jd chassis
7.5 4bbl. Starts dies as soon as gas is pressed. Rebuilt holly, new fuel filter, sat for 5 years . Low fuel pressure issue? Vacuum issue? I need help, I'm not doing shotgun repair. First ford motor if ever seen. Yes I know to fix a Ford buy a Chevrolet
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03-28-2015, 02:11 PM
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#2
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Senior Member
Newmar Owners Club Freightliner Owners Club
Join Date: May 2012
Location: Today? Clayton, North Carolina
Posts: 5,093
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Accelerator pump?
__________________
John and Diane (RIP Lincoln, 21 FEB 22) RVM103 NHSO
Fulltimers since June, 2012
2002 Dutch Star 40, Freightliner, Cat 3126, 2004 Element
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03-28-2015, 03:20 PM
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#3
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Senior Member
Fleetwood Owners Club Ford Super Duty Owner
Join Date: Dec 2014
Location: Northeast Ohio
Posts: 481
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That's my thoughts. With the engine off, look down the front primary throttle bores. Move the throttle back and forth and you should see a good squirt of fuel spraying into each bore on accel.
__________________
2000 Fleetwood Southwind 32V - Ford F53 V10 6.8L 208"WB 20,500 GVWR
2022 Palomino Puma Destination 39FKL
Of all the things I have lost, I miss my mind the most.
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03-28-2015, 03:27 PM
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#4
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Senior Member
Join Date: Jul 2014
Posts: 35,446
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Even with a bad accelerator pump, he should be able to nurse it up above idle. How bad does the gas smell, it could your problem.
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03-28-2015, 03:46 PM
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#5
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Senior Member
Ford Super Duty Owner
Join Date: Dec 2009
Location: Easton, Ks
Posts: 2,836
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Bad circuit breaker or oil pressure switch.
Might even be a bad relay.
You need to bypass the oil pressure switch and trace the wiring out with a loading test light.
The fuel pump wiring diagram:
Oil Pressure switch Jumpered:
/
__________________
Bill
1995 COACHMEN Santara 350FL on a 1994 Ford F53
subford@gmail.com
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03-30-2015, 07:41 AM
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#6
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Member
Join Date: Mar 2015
Posts: 83
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I've flushed the fuel system, has some particulates put nothing unusual for a older rig. The holly gets tons of fuel.
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03-30-2015, 07:49 AM
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#7
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Member
Join Date: Mar 2015
Posts: 83
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To top everything off. Last night someone tried to steal my generator. Sitting on the ground, guess they found out how heavy. Thanks for all the information
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03-30-2015, 07:53 AM
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#8
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Registered User
Ford Super Duty Owner
Join Date: Nov 2014
Location: NW Ohio
Posts: 7,114
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My first thoughts are to make sure we have fresh new fuel, not 5 year old fuel?
Carb rebuild - As others said - Is the accelerator pump working? Is the bowl level set correctly?
If you do a slow steady press of the gas pedal, will it rev up?
If not, using a can of starting fluid, will it rev up if you squirt starting fluid in it as you press the gas pedal?
If it revs ok, then you have a fuel problem. If it doesn't rev, you may have other issues.
Thinking out loud - If its standard distributor, what is the vacuum advance doing. Is timing so far off that the vacuum advance is pushing timing way out? (
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03-30-2015, 08:12 AM
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#9
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Senior Member
Ford Super Duty Owner
Join Date: Dec 2009
Location: Easton, Ks
Posts: 2,836
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Quote:
Originally Posted by diesel1204
I've flushed the fuel system, has some particulates put nothing unusual for a older rig. The holly gets tons of fuel.
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Note that most of the fuel wiring is bypassed during the cranking of the engine so you will have fuel while cranking. Then when the engine starts it may lose the power to the fuel pump if you have a problem with the relay, switches and wiring or low oil pressure.
__________________
Bill
1995 COACHMEN Santara 350FL on a 1994 Ford F53
subford@gmail.com
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03-30-2015, 11:46 AM
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#10
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Member
Join Date: Mar 2015
Posts: 83
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Thanks for all the information. The accelerate r pump works great. But it would help to have the pump cam linkage. I'll call it a brain fart
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03-30-2015, 11:56 AM
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#11
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Registered User
Ford Super Duty Owner
Join Date: Nov 2014
Location: NW Ohio
Posts: 7,114
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Did you get it working???
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03-30-2015, 10:44 PM
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#12
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Senior Member
Join Date: May 2012
Posts: 977
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A twenty six year old rebuilt carb would be the first thing I'd replace 
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03-31-2015, 05:03 PM
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#13
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Member
Join Date: Mar 2015
Posts: 83
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Yep accelerate pump cam spring was gone. Running great. Now I going to bypass smog pump.
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03-31-2015, 05:13 PM
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#14
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Registered User
Ford Super Duty Owner
Join Date: Nov 2014
Location: NW Ohio
Posts: 7,114
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EXCELLENT 
Its nice when it turns out simple and no cost.. 
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