Replaced My Blown Turbo And Now Another Problem, Your Diagnosis

[kelumzi]

hey guys how are we all,

last week i blown the stock rb20 turbo in my R32 down heathcote raceway

luckily enough i was able to drive the car home 2 hours away

finally got round to replacing it with another stock turbo myself today

took the car for a test drive and seems normal at first

when I accelerate above 3000rpm it pings

slowed the car down and the car begins to hesitate and shake

idles below normal and feels as if it about to shut off.. only for about 10 seconds

then its normal again...

what may the problem be, a cylinder, coilpacks, spark plugs?

this would be greatly appreciated as I did like try fix it myself before taking it to the mechanics

i know i should do a compression test, but I will see what happens cheers

thank you, david

Edited June 30, 2007 by kelumzi

[rev210]

air leak in the piping most likely, check it all over and tighten any loose clamps. Air is bypassing the air flow meter by the sounds of it.

[abu]

hey guys how are we all,

last week i blown the stock rb20 turbo in my R32 down heathcote raceway

luckily enough i was able to drive the car home 2 hours away

finally got round to replacing it with another stock turbo myself today

took the car for a test drive and seems normal at first

when I accelerate above 3000rpm it pings

slowed the car down and the car begins to hesitate and shake

idles below normal and feels as if it about to shut off.. only for about 10 seconds

then its normal again...

what may the problem be, a cylinder, coilpacks, spark plugs?

this would be greatly appreciated as I did like try fix it myself before taking it to the mechanics

i know i should do a compression test, but I will see what happens cheers

thank you, david

Hi

Sounds like a boost leak. Check all your intercooler piping, most likely something has popped off, or you havent tightend it up properly again.

Overfuels as you come onto boost @ 3000rpm as there is no boost coming through into the intake plenum/engine, when the AFM is reading boost, therefor overfueling and surging etc.. I think!

Has happened to me in 1 of my car's, and was the same story in my cousin's R33 not long ago.

Give that a shot and see how you go, couldnt be anything major.

Hope that helps some how.

Thanks,

Abu

Edited June 30, 2007 by abu

[r33me]

hey there i have a r33 and ive had the same problem it took me ages

to figure out what was wrong but it was only the bleed valveu ..

i replaced it and it drove smoothly not like choking anymore...

Edited July 7, 2007 by r33me