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Discussion Starter #1
i am having a hard time starting my truck when its cold out anything under 40 degrees but if i plug it in for 3or 4 hours it will start no problem. is this injectors or what?
 

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This was a symptom I experienced, along with long crank times when warm. How many miles on it?
 

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Is your grid heater working good/correctly? If not that could be part of your problems.
 

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i am having a hard time starting my truck when its cold out anything under 40 degrees but if i plug it in for 3or 4 hours it will start no problem. is this injectors or what?
Mine was doing this exact (wouldnt start at 40 deg unless charger was on it) (batteries tested good) same thing a month ago. Last week it began hard starting (in 60 deg weather), then finally wouldn't start at all (unless ether was used). Bottom line was $3600.00 at Cummins (yep new injectors). Runs great starts when cold every time. I have 310,000 miles and have tried everything to rule out spending that much (but time in $$$$$)
 

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rail pressure at:
cold idle
hot idle
hot 2000 rpm cruise control on flat freeway
WOT

classic signs of leaking injectors.
may as well plan on 6 new stainless steel, best ROI for your money

grid heater has no effect on start times until below 0d F. just shortens battery life and connections
 

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Discussion Starter #7
my truck has 103xxx miles and i cant afford the new ss injectors so i ordered a set of remans with a year warranty and my rail pressure is good once i get it started
 

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rail pressure at:
cold idle
hot idle
hot 2000 rpm cruise control on flat freeway
WOT

classic signs of leaking injectors.
may as well plan on 6 new stainless steel, best ROI for your money

grid heater has no effect on start times until below 0d F. just shortens battery life and connections
What should normal Rail pressure be at all of these? I suspect I may have a leaky injector and I have a rail pressure gauge.
 
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