Keep throwing parts at it...

Here's some good reading for you:
(Page 1 & 2):

https://static.oemdtc.com/TechLink/TechLink2011Sep.pdf

pip3146d:

www.askatech.com/AskATechLive/forums/ResourceHandler.ashx?a=3311



What fuel to buy:



https://www.toptiergas.com/

 

My fuel pressure is 55 psi it does lose 1lb every min so I lost 10lbs in 10 min on leak down

 

Do you smell fuel anytime parked/not running?

 

It has no fuel smell but I'll try cranking without the cap but it's also new ...i left the old one at the gas station

 

I tried the seafoam cleaner so far 2 cranks it hasn't stumbled thanks so much and fingers crossed

 

As I stated above; Cheap Fix
Now you know what caused your issue. Only use top tier fuel, and if there is a performance issue: Decarbonize.

 

The stumble came back just as bad I cleaned it several times with the top engine cleaner they work for few days

 

Where are you fueling?
https://www.toptiergas.com/licensed-brands/

 

have you noticed if it is happening at a certain fuel level maybe something is off with the sending unit in the pump or the fuel gauge is miss reporting the amount of fuel or the fuel pump pickup is disconnected or damaged.

 

Good questions.
I always ask many questions to the customer before servicing their concern.
A problem here: post an issue and give limited information.
From the limited information I gathered, fuel contamination is the cause?