mrbonilla

Hello Evo family I'm hoping someone can help me on here or give me some clues on my Evo 9.

First things first Evo 9 full bolt ons, gsc s1 cams/fp green bb turbo/ fic 1250's injectors and a 255 walbro fuel pump and oil catch can.
My Evo is tuned on speed density so no maf, thing I have checked are spark plugs/ 02 sensors/ I did a boost leak test, no leaks, no vaccums leaks, I also did the screw driver test on injectors to see if they were leaking and they sounded normal to me.
Only thing I found was some oil accumulated in the turbo when I inspected it, turbo seals might be leaking, no shaft play and turbo spins freely I have also checked my ebc 3 port seems fine, the stock one has been removed.

The car for the past 3 weeks runs rough, idle ruins ruch around 12's, runs rich on 1st/2nd gear, when on boost it jerks, and it stalls at idle sometimes, when cruising afr's are all up/down, takes forever to start the car when it dies, but it starts fine when cold.

Any help will be very appreciated form you guys, thanks for your time on reading this.

Bhsj13

how old is your fuel pump? fuel pressure okay?

mrbonilla

Hello,

The pump it's about 2-3 years old, and no I haven't checked the fuel pressure on it. Evoscan won't read it right? Since no sensor. @bhsj13

Bhsj13

prob have to hook a gauge locally by the fuel rail. you should pull the pump and take a look at the sock filter just to make sure. i bet it is black as hell.

mrbonilla

Okay I'm going to inspect the pump as soonest as I get some free time, will keep this thread updated.

Thanks man.

Klaiceps

iTrader: (18)

Post a datalog if possible.

mrbonilla

I will tomorrow when I get some free time.
We check the fuel pump today and it seems fine, but for some reason we did a boost leak again and it is not holding air? We checked every single hose/vaccum line/coupler etc, and can't find any air leaking.
Could it be the turbo leaking air? Have anybody experienced this before? The turbo is leaking a good amount of oil probably turbo seals, but not sure if this has to to anything with my current issue.
Thanks

Bhsj13

did you perform it at the compressor inlet? be sure to spray soapy water around the suspected area (turbo) and see?

Bhsj13

also, check the shaft play if you havent already.

mrbonilla

Yeah boost leak test was perform from turbo inlet, didn't really think to spray any soapy water on the turbo wasn't sure if it could work.

There is minimal in/out shaft play on turbo.

Evo9_Dubai

I was having terrible idle/jerking/stalling issues, car was barely drive-able. It turned out to be the IACV. Swapped from another car and it ran like new.

mrbonilla

hello,
was your evo running rich as well?