Cold start / hard start issue

[acarr6]

Having a hard start issue and was wondering if anyone had any ideas. I will be taking it to the shop in a week or so, just curious if anyone else solved it or had similar issues. Started last summer randomly and has been continual since

symptoms are as follows:

-Very long start/struggle to start, will crank for about 5-6 seconds just barely about to start but wont start
-Press start to shut off
-Press start again, fires up instantly
-Runs completely fine after it starts
-Every other start after the cold start is completely fine, instantly fires up, unless I let it sit overnight, then I have the same issue.

Battery is brand new, so that's not it. No codes. ICV, TA's all that stuff is new. I just put some techron injector cleaner in, will see if that does anything, will also have the shop check the injectors for any issues. Was also reading a thread stating it could be the LPFP sensor, but without codes? Or a leaky injector?

[kerrit]

spark plug or leaky fuel injectors would be a common culprit for those symptoms

[acarr6]

Originally Posted by kerrit

spark plug or leaky fuel injectors would be a common culprit for those symptoms

Leaky injector would show itself at WOT too? No? Plugs are new.

[kerrit]

Originally Posted by acarr6

Leaky injector would show itself at WOT too? No? Plugs are new.

Not necessarily, could be leaking slowly while the car is sitting, but not enough to affect the air fuel mixture at WOT enough to make it run rough.

Best to have a shop test the entire system.

[acarr6]

Originally Posted by kerrit

Not necessarily, could be leaking slowly while the car is sitting, but not enough to affect the air fuel mixture at WOT enough to make it run rough.

Best to have a shop test the entire system.

Yeah, going to check injectors when I bring it in, he thinks it's the check valve inside the fuel pump.

[TRM04]

Original ICV?

[acarr6]

Originally Posted by TRM04

Original ICV?

Original? As in oem? It's been replaced with oem ICV. Yesterday I tried priming the fuel pump 4 times prior to starting and had 0 issue whatsoever. Started instantly. So fuel pressure loss related for sure