I've got a 1998 GMC Z71 - Trouble cranking after it's been sitting for 2 or more days.
If I let the truck sit for 2 days without cranking, it is very - very slow to crank.
If it sits for longer... like a week or more, I will have to spin it over for a good
15 minutes before it will crank. Now, once it cranks... it never misses a lick.
If I crank it and drive it every day, it does perfect. Cranks every time.
What is going on here???
Late entry... Engine (350) installed 22K miles ago.
Fuel pump changed 6 years ago.
New plugs, wires, cap / rotor changed with new engine (22K miles ago)
This is a daily driver (except when I'm at work) and then it does not get
cranked for a week or more at a time.