CK5
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Hard start in morning

badfish4tail

1/2 ton status
Joined
Mar 1, 2005
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Location
Long Beach
Okay for the last week i am having a hard time starting my 91 K5.
I seems like it is not getting gas, now with that said i have already replaced the fuel pump, sender, filter, and relay about 3 month ago. When i crank it will start and rpm's go up then fall right back down. After doing this for about 5 min or so it will finally stay on and i go on my mary way. It only does this in the morning for some reason. It's fine for the rest of the day. I just changed the fuel filter again thinking something was cloged, but that didnt work. Any ideas of what could be going on? Is there a fuel pressure regulator?
Thanks for any help...Mario
 
Put a scanner on it and make sure engine temp before you start it first thing in the morning is reading close to ambient air temp.
 
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