Quote:
Originally Posted by 97 S Blazer
Thanks for the response.
The vehicle has had this issue over several hundred gallons of gas, purchased from several name brand stations, as after starting it runs fine and starts easily after the difficult initial instance, I am thinking gas quality isn't a problem.
I will check the fuel pressure this weekend. What is confusing me is that it starts fine, after the morning ritual. If the pump pressure was not sufficient, wouldn't it be an issue all the time?
Thanks again
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NO. No.
no.
Just the opposite.
On a cold start you full fuel pressure to squirt the injectors o a chev. 4.3 and 5.7 engine.
Like 60/66 lbs pressure.
Anything under 63 lbs. pressure will not squirt the injectors on cold cranking.
But lower pressure down around 50 lbs.will start and run all day when engine is warm.
Check the cold cranking start pressure and if it is under 62-63 lbs.
That is your problem.