2009 Misfire cylinder 2

[darrian]

Hey everyone help me out here.
I have a 2009 gen 1 wis 161k miles
Just yesterday on my lunch brake my car ended up throwing cell code PO302 (misfire cyl 2 detected) after it got raspy and poppy sounding at 2k rpm and 30 mph I was in town when this happened.
I drove my car home by babying it never over 3k and it drove fine.
Today I dug it out figured I’d start small(least problematic)
1. I Unplugged coil packs- every one unplugged made the car run ruff at idle. Thus meaning they all working like there supposed to.
2. Spark plug- I pulled them and confirmed all the spark plugs where working number 2 was covered in sut and oil. Every other cyl had oil just lightly(blowby I assume) number 2 was wet almost tho and showed oil build up in the piston all of them had oil on them tho but none like number 2 spark plug tho so I put a new set in no difference, NGK NITRUIM
3. Compression test- now I read numbers are 140+
My car was cranking with all covers off each cyl in order from the belt 1-(105) 2-(110) 3-(105) 4-(115)
Which generally means it’s running fine as long as there all in a range of each other
Combustion happens at 85psi
I bought fuel cleaner and booster for injectors 30 ounces for 3 gall and put it in my tank
It stopped the misfire at idle and driving I can now get up to my launch control (4500) no misfire
Idle don’t misfire
Driving no misfire all the way until 4k (shift)
my cars only misfiring under boost load now don’t matter if it’s 2k rpm or 6k boost load
If I stay (00.00-(-10.00) no misfire if I go positive on boost load my car starts shuddering/ popping and stuttering. I’m genuinely lost on what would be causing it did a injector lay down?
I dont care how much the fix is I’ll buy a turn ready motor have to be im just trying to find answers before I bite the bulllet
Could a injector laid down al
I was just casually driving when this happened.
This is the only code my car throws, sometimes it throws rich at idle (clear it)
Build sheet
It is tuned Cobb access port
On 91 oct and 15pounds (daily)
On 93 it makes 21
Cs downpipe
Cs manifold
3inch exuast all the way back full delete
High pressure file pump
Cs cold air intake
Cs blow off
Internally I believe everything is still stock
It’s just fbo and tuned help I’m confused

 

[Easter Bunny]

What was the spark plug gap?

 

[Mtnbker3531]

What exactly is going on with your compression numbers?

You stated they are all 140 psi plus but then you give much lower numbers (105 psi range) for each cylinder?

Min compression per the FSM is 130 psi.

 

[Awafrican]

lol that part list is no where close to FBO.

as MTN biker said if compression is below 130!she's on her way out, spark plug gap should be .026-.028"
Yes perhaps an injector is clogged give the cleaner helped, have you're injectors ever been cleaned and intake valves cleaned? and 160k miles i really hope vvt was done at some point too
who's your tuner

 

[darrian]

What was the spark plug gap?

Previous spark plugs where ngk .028 new ones are .026 (bosh)

What exactly is going on with your compression numbers?

You stated they are all 140 psi plus but then you give much lower numbers (105 psi range) for each cylinder?

Min compression per the FSM is 130 psi.

“No I stated, I read that good compression is in the 140 range” mine is below that it could have been a bad tester I’m not sure. I do have blow buy

lol that part list is no where close to FBO.

as MTN biker said if compression is below 130!she's on her way out, spark plug gap should be .026-.028"
Yes perhaps an injector is clogged give the cleaner helped, have you're injectors ever been cleaned and intake valves cleaned? and 160k miles i really hope vvt was done at some point too
who's your tuner

She can be on “her way out” this car has met expectations. I did pull it apart today and the injectors are fine and firing correctly. it was tuned by freak tune.
I have a cob accesse port v2 that was tuned for my car by freak tune then re tuned same guy after logging. it’s not the tune

Just an update instead of trash talking my car help would have been welcomed. My car is misfiring because the exuast manifold cracked outright after cyl 2
Causing a boost leak.
I found the problem myself after tearing it apart and checking everything else so I’m buying a graveyard performance. And getting a fine tune done. As for the full built on, comment the car is basically fbo.
just because it’s not catch can or headers aftermarket intercooler don’t mean it’s not close. It’s a process I did also just buy the car less then a year ago

 

[Awafrican]

there's been no trash talking? just us asking questions then you get salty. heck we have an entire thread of format of troubleshooting threads that's helpful and a link to a thread about how to troubleshoot which is pinned in this section

as for your comment about FBO that's exactly what it means you have basic bolt ons at best, thats cool nothing wrong with that but we're simply trying to help and most representing mods doesn't help.

for compression you said "3. Compression test- now I read numbers are 140+" how on earth is that the same as “No I stated, I read that good compression is in the 140 range”

that's it for me, I'm out. Have fun as you will folks

 

[darrian]

there's been no trash talking? just us asking questions then you get salty. heck we have an entire thread of format of troubleshooting threads that's helpful and a link to a thread about how to troubleshoot which is pinned in this section

as for your comment about FBO that's exactly what it means you have basic bolt ons at best, thats cool nothing wrong with that but we're simply trying to help and most representing mods doesn't help.

for compression you said "3. Compression test- now I read numbers are 140+" how on earth is that the same as “No I stated, I read that good compression is in the 140 range”

that's it for me, I'm out. Have fun as you will folks

I could of worded my comment differently, correct
Punctuation would of made it sound correctly
My grammer ain’t the best but I did find the problem. Unfortunately it was after a tuitions 7 hour job

 

[Mtnbker3531]

I'm just curious about your method of determining your injectors are still good. The car has 161,000 miles on it from what you posted.

Are the injectors in there original with 161,000 miles on them?

Edit: Best of luck with Graveyard!

 

[Mtnbker3531]

OP if you are still wanting to buy an exhaust manifold I've got a brand new CorkSport one in a box that I'm going to be posting up in the Classifieds.

It will be a much better deal and it's a better mani than the Graveyard one. You'll need to become a metal member though.