Question about 1993 Ford F350

2 Answers

Hard starting Ford Diesel

I have a hard starting ford diesel with the naturally aspirated 7.3L. I replaced the controller on the back of the block and all the glowplugs that were not working. Even plugged in with a block heater,pan heater it really does not want to start, even at temps around +20F. The truck only has 137K miles. I have an old 6.9 Diesel with 265K that still starts like a dream. Any ideas on what else it could be?

Posted by on

  • fordalta May 11, 2010

    Did you check the new glowplugs? Also does the controller cycle the plugs and how long does the wait to start light stay on.



2 Answers

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

I have a 1994 450 super duty dump truck. and it wont start unless it is very warm out! I am think it is either the glow plug relay or the glow plus it self. I need to know how you check both to see witch one is the problem? And where and how do you find the glow plugs in the truck. Thanks

Posted on Nov 13, 2010

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 20 achievements.


    An expert that got 10 achievements.


    An expert that got 5 achievements.

  • Ford Master
  • 2,760 Answers

HAd the same problem turned out to be the fuel tank selector vlv not sealing off m/t tank on return line so when truck sat cold fuel would drain off injectors making me reprime injectors (airbound)
found this by dumb luck I got a hole punched in front tank (muddin )so I removed it and ran off back tank I observed fuel draining out unhooked return line next morning
replaced valve (and tank) problem went away
Disected old vlv (broken O-Ring)

by the way quick way to ck glow plugs ,What's your voltmeter on your dash doing when wait to start just goes out -If it's bouncing There workin

Posted on Mar 12, 2009


1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

A 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
The service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Good luck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

Wont start back after refueling?

your not mentioning if this is gas or diesel allthough im hoping it's a diesel being a f350 (gas is not so practical at this size truck)
anyway if it's a diesel and you have a hot hard to start problem it's most surely your injectors getting stuck open and draining off your fuel pressure it only takes one stuck open to drain off all pressure but a 91 should have em all replaced at same time any good diesel mechanic would know how to confirm this with a few simple tests

Oct 30, 2013 | 1991 Ford F350

1 Answer

I own a 2001 F350 with a 7.3 diesel and it is hard to start when the temp is 25 above. I will cycle the glow plugs 4 times and try to start and it will not start. I have brought it to two different shops...

the glow plugs are bad when replacing replace the wiring harness as well any ford dealer will not replace just the glow plugs, i know i used to be there diesel mechanic.this is the reason it will start with the block heater is pluged in

Oct 25, 2010 | Ford F-350 Cars & Trucks

1 Answer

I have a 96 ford f350 with a 7.3 diesel. The

You may have spun the speedometer cable gear off in the transmission. Try replacing the speedometer cable.

Jul 10, 2010 | 1993 Ford F350

3 Answers

I ahev a 2005 ford f350 with 6.0 diesel, i am

Bad Injectors most likely. I have a 2006 f-350 and was having the same problem. I ended up changing the fuel pump and 4 injectors.

Jan 11, 2010 | 2006 Ford F 350 Super Duty

1 Answer

1997 ford 7.3 diesel hard to start and has no power

first things first place can sensor! if one whole side is dead replace ur idm! injector drive modual

Oct 07, 2009 | 1997 Ford F150 Regular Cab

1 Answer

2004 Ford F350 diesel, changed fuel filters hard starting

Pull the filters and ck for plastic or o-ring in wrong place. Something is up in the filter. 

Jul 28, 2009 | 2004 Ford F350

1 Answer

Hard Starting diesel

You need to check to see if your block heater is working if equipped. You also should have a plug to plug in for you heater to heat your dielel fuel.

Jan 15, 2009 | 1993 Ford F350

1 Answer

1992 Ford F250 7.3 Diesel hard to start

It is possible that some of the glow plugs might not be working. This will cause a hard start and smoking condition especially in cold weather.

Dec 21, 2008 | 1992 Ford F250

Not finding what you are looking for?
1993 Ford F350 Logo

1,627 people viewed this question

Ask a Question

Usually answered in minutes!

Top Ford Experts


Level 3 Expert

77932 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22306 Answers


Level 3 Expert

5648 Answers

Are you a Ford Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides