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Tips for cold-starting 7.3 powerstroke diesel?

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I have replaced all the glow plugs and injectors along with new relay and still can't get the thing to crank in cold weather. any ideas

Posted on Jan 22, 2014

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Posted on Jan 02, 2017

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kirkx
  • 2019 Answers

SOURCE: 96' f-350 powerstroke diesel is only running on 7

Bad injector is most likely.
Easy to tell because it will be the only cold one if you only run it for a minute or so.

Posted on Jul 24, 2009

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SOURCE: i have a 2001 ford powerstroke diesel it was

Could be the Camshaft Position Sensor (CPS) again. Did you have it replaced by the dealer on the Ford unlimited recall ? It's easy to check...get under the front end of the truck and look up by the harmonic balancer (sits behind the main pulley) on the passenger side and you'll see a sensor (could be brown but I believe that one was the recall color, most likely it will be black) with two wires coming out. Is it secured onto it's mounting bracket ? Is the wiring plug snug into it's socket ? If so...it could very well be a defective CPS. It's not unusual. Any possibility your batteries drained to a point where it's not cranking out enough ? Also consider, you may have originally had a different issue besides the CPS.

Posted on Aug 24, 2009

  • 75 Answers

SOURCE: 99 Ford F350 Powerstroke diesel; misfire code; loss of power

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

  • 93 Answers

SOURCE: 2005 ford f250 powerstroke, I

plug to keep from gelling??? no such thing..there may be an engnieblock heater that makes for easier starting in cold wweather, but this does not accomodate fuel heating. the power cord for the block heater is an option from factory, not all are built with it. howeer, all diesels have the actual heater installed. it is in the right side of the engine as i recall and will have 3 prongs stickinjg out that the plug would snap onto..this heater is in place of an engine freeze plug..the power cord can be ordered from your dealer for abouit $80.00 (US $)..as far as anti gelling, that would be an additive poured directly into you fuel upon fill up..i would suggest using it around 35 degrees f, and below

Posted on Apr 01, 2011

  • 14036 Answers

SOURCE: Ford F-350 7.3L Powerstroke Diesel

SOUND LIKE GLOW PLUGS NOT WORKING.COULD BE FAULTY GLOW PLUG POWER RELAY OR GLOW PLUG CONTROLLER.

Posted on May 19, 2011

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