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Trapped in Chiberia! Cold starting PROBLEMS!!!
I have a 2000 Excursion, 7.3 with 360,000 miles. Running a Spuerchips Flash Paq with the 70 hp. program installed.
Engine has a hard time starting in this cold weather, especially when in lower teens or below.
So far, I have changed the fuel filter, replaced the glow plug control module and the glow plugs.
I do use a fuel additive according to the directions, including increasing the amount when below 5 degrees.
I have cycled the glow plugs 3-4 times before trying to start.
The engine turns over (using Rotella full synthetic oil) but will not fire.
When it does, it sounds like it is firing off of compression only, instead of glow plug assisted.
Plugging in the block heater for at least an hour does help and allows the engine to start easier and sooner.
It will run rough for a moment and then smooth out.
After warming up, it runs fine, no strange exhaust (black or white) smoke.
It will also restart fine.
After sitting in cold for some hours, problem repeats.
I have tried fueling at different stations and problem follows.
There are no codes present.
Also, (maybe related ?) the engine experiences a "reverse surge". When the temp gauge comes up to the last of the white, the engine will drop 2-300 RPM and then return to normal. It will continue to do this until it reaches normal operating temperature. This was a head scratcher to the guy at Ford.