nismo502

iTrader: (2)

I just bought a chinacharger and after installation, my exhaust is smoking whenever my car is doing boost at downslope.

I am suspecting the following:
- Turbo oil seal is gone (but if it is, why is it only happening on downslope?)
- oil return line below oil level in sump
- not enough diameter of return pipe
- poor engine ventilation causing backpressure in oil sump

My turbo oil return orifice is face down toward oil sump.
Anyone with similar experience?

shlammed

iTrader: (8)

do a compression test and add an oil restrictor. and let me know if the compression test numbers are bad and if they arent the restrictor will fix your issue....

Braineack

iTrader: (62)

whenever in boost or vacuum downhill?

nismo502

iTrader: (2)

Thanks Shlammed, compression numbers looks good, I will have a look at the restrictor.
Hi Braineack, its happens when on throttle and slight boost onwards.

nismo502

iTrader: (2)

What I wonder is, why is it that the problem happens on downslope?