Question about Cars & Trucks

1 Answer

Truck diagram of man engine

Truck does not want to start only if you use the primer pump it starts when you switch it of you must primer it again to start it seems like there is no diesel staying in the pump

Posted by on


1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that got 5 achievements.


    An expert that has over 500 points.


    An expert who has answered 200 questions.

  • Cars & Trucks Expert
  • 293 Answers

You got it in one, you have an air leak, it may be a seal on your fuel filter (you can over tighten them and damage the seal) a cracked fuel line, my toyota had a bad valve in the lift pump and that allowed fuel to drain back to tank, fun times ahead, all you can do to start is look for leaks

Posted on Nov 28, 2013


5 Suggested Answers

  • 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

  • 2028 Answers

SOURCE: Duramax diesel engine

Just a thought, the pump has a check vale in it that keeps the fuel from draining back when the engine is off. If the check valve is bad, then the fuel drains back and creates an air pocket that doesn't allow it to pump the fuel, basically it create a vacuum lock in the pump so no fuel can get through it. So, you can't rule out the pump completely just because it stays running. Now I know that I'm just a computer tech here and the 6 years of shop foreman as a auto and diesel mechanic don't count, but it's a thought.

Posted on Sep 04, 2008

  • 353 Answers

SOURCE: 1994 Chevy 4 Dr. 2500 6.5 Diesel start and stall problem

1994 Chevy Truck K 2500 Suburban 4WD V8-393 6.5L DSL

Fuel Cut Solenoid: Testing and Inspection
An inoperative shutdown solenoid can cause a no-start condition. Disconnect solenoid harness connector and with ignition switch in the "ON"
position momentarily touch solenoid harness connector to solenoid connector. If a "click" sound is heard, the solenoid circuit is operating
properly. If "click" is not heard, the system should be diagnosed as follows:
1. With test lamp connected to ground and the ignition switch in the "ON" position, backprobe the shutdown harness connector. If the test lamp
does not light check for open circuit form the ignition switch to the solenoid.
2. If the test lamp lights, check the ground circuit between solenoid stud and injection pump cover to see if connectors are clean and tight. If the
connections are not clean and tight repair and retest.
3. If the ground circuit is "OK", remove the injection pump cover. Connect a jumper wire between solenoid ground connector and ground. With
the ignition switch in the "ON" position, momentarily touch shutdown solenoid harness connector to shutdown solenoid terminal. If solenoid
operates, check for internal injection pump problem.
4. If the solenoid will not operate, replace the shutdown solenoid.
Fuel Cut Solenoid: Service and Repair
1. Remove pump cover.
2. Terminal contact nuts.
3. Solenoid.
1. Solenoid in the pump cover.
- On the shutdown solenoid, make sure that the linkage is free.
- On the cold advance solenoid, make sure that the plunger is centered so that it will contact the check ball in the fitting.
2. Insulating washers on the terminal studs.
3. Terminal nuts and tighten to 1 Nm (9 in lbs).
4. Pump cover.
5. Inspect solenoid operation prior to installing the pump cover. Use a 12 volt DC power source.


Posted on Sep 10, 2009

  • 22 Answers

SOURCE: I have a 2001 f250

Sounds like you may have a high pressure oil leak, if you check the oil resevoir level before you start the truck you may find it low or empty. Its located at the front of the engine in front of the fuel filter housing, there should be a threaded plug you can remove to look in, if its empty or looks low, fill it up with the proper oil and put the plug back and try it then, if its ok now, you likely have an oil leak, typically failed o-rings on one or more injectors. You can buy injector o-ring kits but its a fairly involved job, I am a Ford Diesel tech and it usually takes me about 3 hours to replace all the o-rings on all 8 injectors, first time for someone who's never done it will probly be closer to 5 or 6 hours.

Posted on Aug 17, 2010

  • 17970 Answers

SOURCE: I have a Ford F250,

I suggest check in THIS LINK for 2003-Ford-F-250-Owners-Manual, look in the page 176 and next.

Good luck.

Posted on Nov 30, 2010

Add Your Answer

Uploading: 0%


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



Related Questions:

1 Answer

2010 nissan patrol 3ltr turbo diesel doesnt like to start on a really hot days. Any common problems that are known about???

I have seen many issues with the fuel primer pumps. if this id a direct inject motor then its the plunger on top of the fuel filter, if its a common rail engine then its a plunger in the fuel line under the fuel filter.
when temps are hotter then the fuel will expand more and can draw air back in through the primer pump when contracts again. best way to check this is to fit a clear hose between the outlet of the fuel filter and the engine, then drive the vehicle to get the fuel into normal flow then park it in the sun and leave it. later on check the clear hose, if there is no fuel in it then air is entering the fuel line somewhere, most likely from the primer pump, if its a hose then a fuel leak will been seen.

Nov 19, 2014 | Nissan Cars & Trucks

1 Answer

Do you have a starting wiring diagram for a 1999 600 yamaha grizzly?

I hope that you have checked the dead mans switch (emergency stop) is switched on and is working. This is the switch that you can switch off the engine as you roll over or need to shut off the engine quick

Dec 06, 2013 | Cars & Trucks

1 Answer

1991 Ford Thunderbird V6 3.8 - Starting Issues

Maybe something wrong with inertia switch? Part of diagram so you can see inertia switch wire colors. How long since a tune-up? Any applicable trouble codes? Also, use a gage check proper fuel pressure, my info says 35--45 psi. I've seen fuel pumps that would run, but wouldn't make proper fuel pressure. I'm not saying the fuel pump has a problem, at the moment, I don't know?

Apr 17, 2017 | 1991 Ford Thunderbird

1 Answer

Diagram for 99 dodge deisel 5.9L fuel system. looking for primer button or lever

9 dodge has no primer it has an electric fuel pump you need to bump the starter ( don't start it) leave in the on position and it should pump fuel . if you dont get fuel out the bleeder on the filter top your pump is bad. the pumps can run but still not pump fuel

Sep 05, 2010 | Dodge Pickup Cars & Trucks

1 Answer

Air in fuel line?

get a container with fuel(about 4 liters will do). put a hose from the Primer to the fuel container and another hose from the injection pump return line to the container. if it works fine then the air leak is between the tank and the primer.

Jun 03, 2009 | 1987 Mitsubishi Passenger

1 Answer

Engine knocks then stops knocking ...repeat.

checkout your oil pump and your camshaft bearing and get on this website to see if they have your truck listed its and you maybe able to checkout pictures and diagrams showing you how to repair your truck and checkout prices at the same time and i hope this help you out michigan man

May 03, 2009 | 1987 Ford Ranger

Not finding what you are looking for?
Cars & Trucks Logo

Related Topics:

47 people viewed this question

Ask a Question

Usually answered in minutes!

Top Cars & Trucks Experts


Level 3 Expert

78289 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22326 Answers

Thomas Perkins
Thomas Perkins

Level 3 Expert

14405 Answers

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

Answer questions

Manuals & User Guides