With the miles and symptoms, I'd be keen on installing a HPO gauge.
My guess is the pump is getting slow to build pressure, yet the injectors dribble in fuel before it actually starts.
The only weird part is this has happened on two different engines. I just swapped in a 225k engine and it started up well for the first couple weeks and now it's doing the same thing.
I just started it with a scanner and the fuel gauge on it. The fuel gauge was slow to build but so was the hpop. But that could be a lg in the scanner. It seems unlikely that two different engines would do that same thing. I thought maybe a fuel leak that was draining the line back to the tank and therefore having the pump to prime every start up. But apparently not. I'm confused.
This may sound crazy but what about adding a low pressure fuel pump after the selector valve to make sure I have fuel to the bowl? I am at a loss on this as I have no leaks or anything so j. Any figure in where my fuel is going.
HPO pumps almost never fail
The last one is from a really strong truck that starts as it should
Hpo Res is full. I tried a pcm from an auto truck and my truck did not like that. Not at all. But it did not start any quicker anyway.
I have a sore ipr I will try that. It is just so weird because when I swapped in the new engine it ran great and slow got worse just like my old engine. But in a space of a few weeks or less. It has to be related as I know I cannot be that unlucky.
It takes til it starts to get up to pressure. So I was wondering if I had a fuel flow prob which is why I have amassed the parts to do e fuel this coming weekend. I do have a leak in the valley of fuel but I have resealed the bowl, replaced the fuel lines and not found that stinkin leak. So at least I will have a regulated return this coming weekend. I have already assembled the stuff for the tightwad mod just to solve my fuel leak.