Low BoOst - Black Smoke under full throttle

Post by **Darkside** » Oct Tue 06, 2009 6:16 pm

Can always check here http://www.horsepowerfreaks.com

Post by **Jd3** » Oct Tue 06, 2009 8:09 pm

when my slave cylinder went out i had to pump the clutch to get enough pressure built to shift into or out of gear.... hope that eliminates somethin off your troubleshootin....

Post by **Dubber** » Oct Tue 06, 2009 8:36 pm

how hard was it for you to replace the slave cylinder ? how much did it cost??

Post by **Darkside** » Oct Tue 06, 2009 9:33 pm

Dubber wrote:how hard was it for you to replace the slave cylinder ? how much did it cost??

Had the dealership do it.... so my first born and left nut..... it was like two years ago but I had a clutch installed with it...so the total package was about 1500...... sorry for the worthless quote

oh ya.... this is jurgen on joshs profile...

Post by **Dubber** » Oct Tue 06, 2009 11:37 pm

Hmm, Alright - Also - When i start the car in the morning or after its been sitting for a while it makes a really really high pitched whine. This goes away after a couple of min - any ideas???

Also - if i turn the wheel back and forth, it will make a clunking/knocking sound.. anyone know what that is?

YouTube · Post by **Mikewire** » Oct Wed 07, 2009 1:29 am

Dood, are you like like looking for things to be wrong with your car or what??!

The whine is your secondary air injection pump. I pumps hotter air from the exhaust into the intake to help reduce emissions by warming the intake air on start up. You are noticing it now because seasonal temps are dropping so it runs longer and more frequently.

The clunk when you turn the wheel could be lower control arms, ball joints, tie rods, sway bushings, or maybe even sub frame bushings. The easiest way to check for the first three issues is to jack up the wheel and grab it with your hands at 12 and 6 o'clock and try to move it, then try the same with your hands at 9 and 3 o'clock. If it moves with the first test it's LCA or ball joints. The latter would be tie rod ends.

The sub frame bushings/bolts are harder to diagnose, but basicallly you will hear the whole thing shift when you turn the wheel.

All those things are just guesses, and things that are common to a MKIV. For what you explained you could simply have a bolt something loose under there.

Post by **Jd3** » Oct Wed 07, 2009 12:17 pm

Dubber wrote:Hmm, Alright - Also - When i start the car in the morning or after its been sitting for a while it makes a really really high pitched whine. This goes away after a couple of min - any ideas???

Also - if i turn the wheel back and forth, it will make a clunking/knocking sound.. anyone know what that is?

the wheel turning sound on mine was low power steering fluid

if you go down to dana they ll probably top you off for free......

Post by **Darkside** » Oct Wed 07, 2009 6:26 pm

Upper strut bearings/bushings?

Post by **Dubber** » Oct Sat 10, 2009 3:28 pm

I changed my wheels for winter - while i did that, i saw these two things that look ripped..
Lower control arm bushing??

front and rear?
any other bushings i should replace while im in there??

Should i maybe just get this kit if its needed??
http://www.mjmautohaus.com/catalog/prod ... ts_id=2935

Post by **Roadhog** » Oct Sat 10, 2009 7:58 pm

the rear ones are fine, the front lower control arm ones are REALLY REALLY BAD. Replace them asap.

and yeah, that kit is good.

*Big Sky Euro

Low BoOst - Black Smoke under full throttle

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Re: Low BoOst - Black Smoke under full throttle

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