Question about 2002 Ford Super Duty F 450
Why is my 99 ford F450 7.3L powerstroke turbo diesel blowing white smoke
Does any one have a idea a friend here has changed ecm, inj, fuel pump checked conector at fire wall ,fuel and has a short wrecker tow f450 99 and will be going down the road and he says the thing just loses all power and kind of just won't do over 15 to 20mph and lets it sit and he says it will do it again. I am not sure how long it takes but since I don't work on diesels I figured I would have the experts that do if anyone knows it's you guys any help he is in Charlotte NC I can put you with this guy he has had it to all the parts changers and no luck Thanks Mark 704 492 1647
Posted on Mar 02, 2010
F450 7.3L powerstroke turbo diesel starts abd runs fine. But after running and shutting off it will not start again for over an hour. What is wrong?
Posted on Aug 17, 2010
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Posted on Jan 02, 2017
The first thing i would check is the Glow Plug Relay. Depending on your engine there should be (2 solenoids, or just one) sitting on the top front a little to the right of center. (right bank of engine that is) If you have 2 of them one should be smaller and it is the one furthest to the rear of the engine. It controls power to your glow plugs for cold start up. When you turn the key to the on position the 2 larger wires should both have power. When the ignition is off only one wire should have power. Check this if you do both these tests and only one wire has power with key on or off then you need to make sure that the key switch is sending power to the solenoid. Do this by checking the smaller wire with key off. It should not have power and then with key on it should have power. If this is good and test one is bad then the relay is bad. Note This is not true for the larger realy that sits furthest foward on the engine. The bigger one. This test will not work for it but it controls your intake heater. On another note: This is a timed circut and will "kick out" after about 1-2 minutes. In otherwords it does not stay on all the time that key switch is on it will for for about 1-2 minutes then shut off! Next would be your injectors are getting weak or bad and even your HPOP could be getting weak. or glow plugs in engine are out, In otherwords there are alot of possibilities causing your problems If you are getting a misfire code for your injectors then you may have some weak or inop injectors. Any way this will give you a pretty easy test for the most common failure which is the Glow plug relay. About 35-40 bucks at your local auto parts house.
Posted on Feb 03, 2010
if you have a rad cap open it and check your coolant level. if it is low fill the rad and leave cap off while you then put the recovery resorvoir at the proper cold level. Move your way along to the thermostat and look for a screw and nut at the top of the housing. If there is one then this is the highest point of the coolant in your vehicle and you will bleed it by opening this hole and running your engine until only coolant flows from the exposed hole. Do not remove the screw just turn it until the hole in the side is revealed. I basically almost remove the screw (till it kind of wobbles) and then turn it back in til it stable (like 1 turn). Be sure that the coolant is flowing without bubbles(air) and not just kinda trickling with short pauses.
If the housing for the thernostat is lower than the rad cap then you bleed it through the rad. Wait for the thernostat to open and the level to go down and then refill it and watch to see no more bubbles (air) escaping. Once the vehicle gets hot you may have to wait for the engine to cool(ie) turn it off for a while and redo it. Also if you are using the thermostat bleed hole be sure to put the rad cap back on before you start the bleed process and keep your eye on the coolant resorvoir adding coolant as needed so you dont **** more air into the engine.
Posted on Jul 20, 2008
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