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Hey guys, so swapping out the fuel pump and putting a new o-ring in fixed it! It still has the VVT rattle obviously so I have to take it in for that. The bad part is that I have a $500 Autotech fuel pump sitting around and that my AP still reads 1669psi for HPFP, so that might be a faulty fuel...

No not yet... if swapping out the fuel pump doesn't do anything then I'm going in to get the VVT checked and after that I have no idea... maybe the fuel sensor but highly unlikely.

Okay I'll take it to the shop on Monday after I pick it back up from Mazda.

Additionally, there's something I forgot to mention. Ever since the engine swap, on a cold start, there is a loud rattle/clanking noise when the car starts. From what I could find out, it might be the VVT actuator, solenoid, or chain. I have an engine warranty to the shop that swapped it so I'm...

I hope these logs are enough. Should I ask the shop if they have their own kit or buy my own like this one:

I've come here as a last resort. Heartbroken over months of trial and error. Recently had the engine replaced, and had put in an Autotech HPFP. She has an HPS CAI and a HKS BOV... I know, it's horrible for the engine, but it came with it when I bought it, and I spent all my resources in...

I am having the same issue and I was just about to tell the mechanic to replace my fuel rail sensor... Did replacing the PCM fix it?