Low Fuel Pressure

[Turbo]

Morning all,
To shorten this post I will sum up all that has been done recently.
I smelt fuel, found blown out O-ring from bad dealer install when they replaced my injector year ago. Fixed this and added CorkSport Injector seals. Car ran better than ever for a week. Started stuttering under boost so I logged it (attached). Car is parked due to this massive fuel drop off. Fuel pump internals are Corksport, and I have pump off now with no visible failure present. Any ideas would be helpful. Mod list at bottom


Custom 3" CBE with Catted DP / CS Turbo / Cobb AP / JBR OCC / JBR Thermal Intake Mani and Throttle Body gaskets / CPE EGR delete / Damond PCV plate / HTP 3.5 Intake and Battery Tray / Synapse DV /CS 3 Port EBCS / NGK Plugs Step Colder / CS HPFP Internals / TR8 FMIC w/ CX Racing Piping / Rear Trans Mount / 3 Bar Map Sensor / Bilstein B8's W/ CorkSport Springs / SPC Upper Ball joints / Gen-2 Stockers wrapped in Bridgestone RE760 Sports 225/45/18...Currently wrapped in Snow Tyres / Diamond Audio D3 12" with custom box/mounted / Rockford T500.1 Amp /

 

[NavysailorMS3]

Try swapping fuel pump with someone to see if it is in fact your fuel pump that is bad. Its a cheap way to check.

 

[Turbo]

This is set up for Friday, just covering all my basis if its not the pump. Thanx NavySailerMS3

 

[NavysailorMS3]

Keep us posted when you do this.

 

[Turbo]

Will do

 

[mOo_GiZzArD]

its def that 12" sub and rockford amp... taggin along to see the outcome

 

[Turbo]

LOL right. I just copied my mod list and pasted. Prob didn't need to include that

 

[monkey.bones.007]

LOL right. I just copied my mod list and pasted. Prob didn't need to include that

You forgot your dildo mod.

tapatalk, it sucks

 

[mOo_GiZzArD]

better retune after that dildo mod.... dont want the car going all willy nilly.

 

[KingScumbag]

PRV?

 

[Rommel043]

bad o ring?

 

[Turbo]

All O-rings are intact and uncut or blown out. Just got off the phone with Corksport, they feel its in the pressure valve on the rail. My tuner feels its on the HPFP side. I will swap pumps and go from there.
[doublepost=1455131300][/doublepost]Bahahaha forgot about that pic.

 

[KingScumbag]

If it's not the pump. I.e spill valve stuck, etc.

I'm pretty sure it's the pressure relief valve.

I had similar symptoms a couple years back.

 

[Turbo]

Im sourcing new valve today. Figure it might just be time to replace it at 92K and E for last 6 months

 

[Disknkt]

Saw this before and after swapping the spill valve, the HPFP, the relief valve and seals on the injectors with no effect it ended up being the fuel pressure sensor at the end of the rail. Might want to give that a try.

 

[Turbo]

If were talking about the sensor on the left side of the fuel rail then that sucks cuz I believe thats part of the fuel rail and is $493. If were talking Pressure valve thats gold on right side back of fuel rail then that is the valve I am working on sourcing now. Ill start cheap. If its the rail, I might be able to get it covered under warranty since its still OEM.

 

[monkey.bones.007]

@Shaun all Gold Member and stuff.

 

[Turbo]

I like to strike early.

 

[Disknkt]

I was refering to the sensor on the left side. Not cheap.

 

[KingScumbag]

I was refering to the sensor on the left side. Not cheap.

You can actually find a used rail cheap. With the sensor still attached. Or maybe someone in your local group has one kicking around.