Hpfp concerns

[Mazi07]

Year/Make/Model: 07 mazdaspeed 3
Mileage: 65-70,000ish ( bought used engine )
Location: Atlanta, GA
Concern: hpfp psi drops towards 600 and whole car jerks hard under easy acceleration and wot
DTCs:
Modifications: not entirely sure bought the car used 3yrs ago and he didn't tell me everything he did
ECU/Tuning Software: cobb accessport v3
Tuner: n/a
Is the concern intermittent? no does it in every gear
Can you duplicate the concern? yes
Recent Repairs: none yet
Correction:

i can attach the log tomorrow, but as far as i know i have stock internals for the hpfp and the idle psi is 400-500 then under normal driving its up towards 1,600-1,800 psi then if i go into a pull it will drop down to 600 psi or less and the whole car jerks hard. it even does it under normal driving conditions with no spicy driving tendencies. im new to the speed world and know ZERO about this platform and im trying to research everything i can but this issue has me stuck. thank you in advance
-chris

 

[Enki]

What oil are you running? If it's not on the best oil thread, swap it out and do a 1000 mile change after with the same stuff.
Also, you will need to pull your HPFP and clean the internals/inspect for wear at some point, but it's likely black/sticky death (easy to clean with lighter fluid/naphtha).

As long as you aren't making boost, you're (fairly) safe to keep driving for now (but better to resolve sooner than later).

Also, it could be the ITFP filter all fucked up. How many miles on the chassis?

 

[Mazi07]

I’m using Mobil 1 5w-30. I’ll have to take a look at that thread. I’m usually around 12-15lbs of boost but according to the ap I’ve hit 23 lbs so I need to look into it. And the ITFP you’re referring to is the one in the tank correct? And I’ll have to look when I get off work I think 150,xxxish miles on the chassis

 

[DISIFTW]

Swap the oil, 23psi on not good fuel pressure is bad news so stop boosting period until you figure the issue out. ITFP stands for in-tank fuel pump so yes, its the one in the gas tank.

 

[DISIFTW]

Also, if you are unsure about mods then post a couple pics of the engine bay so we can try to help you out. If there's any mods you'll want to get proper tune from Freektune or PD tuning, I don't recommend the OTS maps the AP comes with at all.

 

[Mazi07]

Also, if you are unsure about mods then post a couple pics of the engine bay so we can try to help you out. If there's any mods you'll want to get proper tune from Freektune or PD tuning, I don't recommend the OTS maps the AP comes with at all.

the only reason i was using the OTS map was to have a tune on the ecu because the previous owner said it needed one when i bought it. But also didnt tell me that the turbo seals were leaking he had only told me that is burned a little oil due to needing a tune. i just didnt realize how much it was really burning and i ended up spinning a bearing and having to get another engine. Now that being said Ive uploaded the datalog from this morning on the way to work. and ill have to reply again from my phone since thats where all my pictures are lol.

And from what you can't see there is a Cobb 3 connection boost solenoid and a catless downpipe not sure the brand off the top of my head but here are the engine bay pics

 

[Enki]

Pictured: SRI, BPV, and no dipstick mod.

 

[Mazi07]

the only reason i was using the OTS map was to have a tune on the ecu because the previous owner said it needed one when i bought it. But also didnt tell me that the turbo seals were leaking he had only told me that is burned a little oil due to needing a tune. i just didnt realize how much it was really burning and i ended up spinning a bearing and having to get another engine. Now that being said Ive uploaded the datalog from this morning on the way to work. and ill have to reply again from my phone since thats where all my pictures are lol.

Also, if you are unsure about mods then post a couple pics of the engine bay so we can try to help you out. If there's any mods you'll want to get proper tune from Freektune or PD tuning, I don't recommend the OTS maps the AP comes with at all.

And from what you can't see there is a Cobb 3 connection boost solenoid and a catless downpipe not sure the brand off the top of my head but here are the engine bay pics

Pictured: SRI, BPV, and no dipstick mod.

whats the dipstick mod?

 

[Enki]

And from what you can't see there is a Cobb 3 connection boost solenoid and a catless downpipe not sure the brand off the top of my head but here are the engine bay pics

whats the dipstick mod?

Better question: Where the fuck is your oil dipstick?

 

[Mazi07]

Better question: Where the fuck is your oil dipstick?

Ok, now i feel dumb haha. Those are older pictures before she was running. The dipstick is there currently lol.

 

[Enki]

OK good. Usually if that's gone gone it's because you had crankcase pressure issues causing it to pop out and spray oil all over the hood.

 

[Mazi07]

OK good. Usually if that's gone gone it's because you had crankcase pressure issues causing it to pop out and spray oil all over the hood.

yeah ive had that issue with my old chevy cruze before....

oh and to refer back to not using the OTS on the AP, how do i go about the freektune route or there a shop about 25mins from me that does specializes in the speeds and a few other makes. He uses a dyno there would that be easier than emails? Also correct me if im wrong i need to clean and rebuild the hpfp before i take it there or should i see if hes able to do it?