need more 1J help

[The Reaper]

well i got the cooling system fixed and the brakes bled and the master cylinder changed.....now my breaks dont work. i dunno if the brakelight box is bad or what....fuse is fine....

and i guess it fouled out the plugs...already....like 2 miles on the plugs and they are dead WTF???

it idles on like 4 cylinders and revs clean all the way to 6500 it revs smooth, but once it builds any kind of boost it bucks and runs like ass and breaks up BAD!! why in the hell would they be fouled already>??? something still wrong with the knock sensor wiring and its causing it to dump fuel?? i know at idle it pours black smoke. its completely stock with open DP...

BTW plugs are gapped at .028

 

[supradan22]

What type of spark plugs are you running?

Or maybe its time for new wires.

 

[The Reaper]

well the first couple times it ran smooth no problems

but the first time i drove it and boosted on it its started missing and breaking up BAD

im running the copper NGKs 6097's or whatever they are...

 

[The Reaper]

yea its completely stock except some gay greddy Airinx foam filter that came with it

we think we might know what it is.

i built boost back when it was running fine and it hit FC and after that it started sucking so we're thinking i blew off the Vac line leading to the map sensor

 

[suprahero]

Sounds kind of like my car, but I know mine is because it's running way too rich. Maybe it is just a vacuum line, but I don't know why that would foul out your plugs so quick. Aaron and I wrapped my coilpacks, because they all had a crack in them. I just wrapped them with electrical tape. You may want to check that as well if it's missfiring at all. Good luck and keep us posted........lol

 

[The Reaper]

well it wasn't miss firing at all until i hit full boost and then FC

so the plugs might not even be fouled its just an unplugged MAP sensor thats causing the shittyness

 

[annoyingrob]

Or maybe its time for new wires.

Haha.

1JZ wires :icon_conf

 

[Big Wang Bandit]

Haha.

1JZ wires :icon_conf

:rofl:
I was about to say the same thing.

Instead of asking how could the plugs be fouled, go check them. it will take 20 minutes. Its a lot easier than asking on the internet.

 

[The Reaper]

ummm because i'been at work since 745 this morning and i can't exactly walk outside to check

 

[Big Wang Bandit]

Well what i would of done is check them when you got home, and then ask.


We dont know what your 1jz is like. You need to dig into it.

My suggestion, Check your plugs. Then check the coil packs, Do a vac line sweep and check all of your IC piping.

 

[The Reaper]

im checking the map sensor before i do anything else

im like 99% positive thats whats wrong

and i dont have the internet at home thats why i didn't wait and it needs to be running ASAP can't wait ANOTHER night for a response.

 

[Big Wang Bandit]

Ahhhh. I gotcha.


Well lets see. MAP sensor yes. But a boost leak seems quite the possibility.

 

[The Reaper]

its not a boost leak

like i said it ran fine the first two pulls no problems then boom it happens

i have tbolt clamps on most of the pipes im sure its the map sensor

 

[Big Wang Bandit]

Maybe somthing popped on that 3rd pull

Let us know.

 

[The Reaper]

will do man

 

[suprahero]

..........and the verdict is?

 

[Van Diesel]

sounds like a map sensor unplugged.