Hey guys I'm stumped, my 97 started idling really choppy a while back and it smokes real bad and has some awful injector knock when cold in addition to the black liquid coming out the exhaust (doesn't have the consistency of oil, it's almost like liquid soot) all my injectors buzzed out okay except one was a little weak. I figured o rings which I've done before but my fuel bowl isn't black and my tank isn't pressuring up like it did before so I'm just wondering if anyone has had this happen before? Also it blue hazes pretty heavy when it's warm.

 

Hows your blow by? If your hazing bluish, most likely turbo oil seal gone bad check at the down pipe for wetness.

 

It's blowing a bit on the firewall because my clamp doesn't seal 100%, doesn't really explain the injector knock though and the choppy idle

 

You have the leak at he down pipe clamp? Is it wet? What about your up pipes are they leaking too?
Injector knock can be caused by alot of stuff such as, loose injector solenoids, loose injectors, worn out injectors, lack of fuel, low oil pressure thats all I can thick right now. The choppy sound can also mean a stuck ebpv. Does it souns like a hissing sound?

 

No ebpv on this turbo and yeah the firewall is wet where it's spraying. The injector knock only happens when it's cold and the only other time I've experienced it was when the o rings were shot

 

Should of ask since the beginning but, any onfo on the truck would be great?

 

Sounds like your injectors are on the way out. Plug the truck in over night and see how it runs after that.

Is there a lot of liquid? You should be able to tell what it is by the smell and consistency. No smell would make me think it's just condensation.

Edit: I redact my statement about the condensation. If it's also coming out directly aft the turbo, you might have a turbo seal that is shot. With out seeing the liquid, it's hard to tell.

I would doubt it would be coolant, as these trucks don't seem to have a problem with head gaskets and such, but if anything is possible, especially with this colder weather we've been having.

 

Check your engine oil level

 

I won't be at the truck until the weekend, the fluid is jet black, thin, stains the crap out of anything it touches, and is very thin no lubricating qualities to it. The truck is a 97 120V IDM, cold air intake, 3 inch downpipe, e4od. The blue haze is raw fuel I don't smell any oil burning.