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Replace fuel filter. Diesel motors in cold weather need to run for 10 to 15 minutes before you hit the road. To avoid worming up the engine for that long you need to install the block heater, plug it in every night and you will have no problems any more.
You know what...there's nothing wrong with your engine...When metal is cold...it contracts...thus causing more friction between moving parts...this is why your motor runs rough in cold weather...I'm gonna give you a crazy suggestion...Have you heard of a "Block Heater"...it is a heated dip stick that you place in your engine overnight.. this device keeps your oil at operating temp overnight...so when you start your car....the block is warm...and the oil flows like magic..just pull out your dipstick...insert the block heater...and rest easy...of course...it has to plugged into a 110 volt outlet...You can find these online by Googleing it or go to www.yourautonetwork.com...Give it a try and let me know....I hope this was helpful....PEACE.....
Glow plugs are heating devices to aid starting diesel vehicles. Purpose:Diesel engines, unlike petrol engines, do not use spark plugs to induce combustion. Instead, they rely solely on compression to raise the temperature of the air to a point where the diesel will combust spontaneously when introduced to the hot high pressure air. The high pressure and spray pattern of the diesel ensures a controlled, complete burn. The piston rises, compressing the air in the cylinder; this causes the air's temperature to rise. By the time the piston reaches the top of its travel path, the temperature in the cylinder is very high. The fuel mist is then sprayed into the cylinder; it instantly combusts, forcing the piston downwards, thus generating power. The pressure required to heat the air to that temperature, however, necessitates the use of a large and very strong engine block. The problem posed is that in cold weather, if the engine has not been running (as is the case when the car is left to sit overnight), that the large engine block becomes very cold; when one then attempts to start the engine, the cold engine block acts as a heat sink, quickly dissipating the heat generated by the pistons compressing air. The engine is then unable to start, because it cannot generate and maintain enough heat for the fuel to ignite. For that reason indirect injected diesel engines are manufactured with glow-plugs in each prechamber, and direct injected diesel engines are manufactured with glow-plugs in each combustion chamber. Wikipedia
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
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!!
If your car came with a block heater the plug will be near the front of the call around the grill radiator. Some vehicles have this as a factory option and some do not. If it did not come with one from the factory you can always add a block heater. You have to knock out a freeze plug and install the block heater. If your diesel is geling this will not solve that problem. The block heater is only to aid in starting. You may need new glow plugs in your car if it is having a hard time starting and you may need to add a diesel anti gel which you can buy at most parts stores.
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