fool4wheelin wrote:
When starting in single digit temps, how long does it have to crank before it starts? (I'm assuming you're not using the block heater?)
Correct, not using the block heater, I tend to turn the key quickly on and off 4 times before fully engaging the starter... it then takes a few turns of the engine before it fires up.
fool4wheelin wrote:
You mentioned you don't have the 5V GP program, so do you have the stock 7V program, or is it different from stock with the Yeti tune? Which version of the GP relay do you have?
The Yeti tune has a GP software that I believe to be the original 7v program (someone please correct me if I'm wrong)
fool4wheelin wrote:
So far mine is starting in single digits, just takes some cranking (5-10 sec) to start. With the ceramics didn't matter if the engine was warm or cold, didn't need to crank for more than 1 second before starting. The other thing I'm dealing with is it takes 3-5 seconds of cranking to start a cold engine when its 50-70°F in my garage. I'm suspicious I might have something else going on, like losing the prime on my fuel pump/injectors when the engine cools down.
I never had my engine start with one turn of the motor with the original ceramics in single digit temps.
You may have something else going on, clean the injectors and upper cylinder head with a quality fuel system cleaner. That will clean injectors and everything else in the upper parts of the head.
I know dirty injectors, carbon encrusted cylinder chambers, fouled valve guides and valve stems will create slow diesel engine starts. Start by cleaning those parts with a quality diesel fuel injector cleaner along with an upper cylinder head cleaner and you'll notice quicker smoother starts once again. Cleaning those parts will take a few tank fulls of fuel.
I recently added a quart of Marvel Mystery Oil and CRC Motor treatment at fill up to maintain the fuel injectors and internal engine parts clean.