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hi,you need to check all 3 power cable circuits if any over 5 ohms replace cable. measure resistance of block heater that needs to be between 12.5 and 17.0 ohms if not replace. i take it this is a 6.0L Does it start ok in cold ? Do you add any diesel treatment to fuel they do gum up in cold weather.The block heater is just above starter
Not knowing your experience with diesel motors,if the glow plugs are not being allowed to cycle it makes starting the motor cold much harder. If it has a block heater package that also helps to plug in. Keeps the coolant warm and in turn keeps the motor warm.
You will probably need some Ether based starting fluid. You may have to remove air filter to shoot a 2 second blast into the intake - but first try shooting the air intake with the 2 second blast and start vehicle. Diesel fuel tends to thicken in cold weather and a fuel additive like Lowes diesel fuel treatment may help keep your fuel fluid in colder weather. In cold weather, like on a night of clear skies causing low temperatures, a block engine heater will help to keep your fuel fluid - along with the diesel treatment. Block heaters are not too difficult to install depending on your vehicles configuration and how much room you have at a freeze plug, and are well worth the cost. Hope this helps and please rate my solution!!
This engine 'loves' glow plugs! One goes and the others try to handle the amps. Change them and you will have no probs! Other than that, I feel this is about the best diesel truck made!
DEPENDING HOW COLD OUT IT IS DIESELS DONT LIKE TO START IN COLD WHEATHER UNLESS THE GLOW PLUGS ARE WARM THIS IS THE REASON FOR PLUGGING DIESELS IN MOST WONT START IF ITS COLD OUT IF ITS NOT THAT COLD OUT IT SHOULD START IF YOU HAVE ENOUGH BATTERY POWER MAYBE THERES NOT ENOUGH FUEL GETTING UP TO THE THROTTLE BODY HOPE THIS HELPS
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