BelgianRX7

Hello,

The car regarding this problem is a '96 RX-7 Chuki with 178K km on it or 110K miles that I've imported a few months ago.

As the title says, I have 0.69bar boost but as soon as the secondary turbo has to spin at 4500rpm, the boost just drops to 0 and never comes up again.

Also, I've noticed that the bottom of my engine is all greasy and the turbo has some tiny oil splats on it, aswell as the intercooler.

All the hoses in the rat's nest have been changed to blue aftermarket hoses.

Any ideas?



Thanks

RotaryEvolution

iTrader: (30)

check the couplers on all the turbo charge pipes, particularly the one right off the Y pipe.

BelgianRX7

alright will do! you reckon there's one that needs to be replaced or one that's loose?

RotaryEvolution

iTrader: (30)

they tend to rip after so many years of use.

BelgianRX7

Going to check it tomorrow and I'll keep you posted, thanks for your reply!

BelgianRX7

checked the couplers on all pipes, they seemed ok, any other idea?

lastphaseofthis

iTrader: (8)

you could have a shop perform a fog/smoke test, to comepletely rule out boost leaks, then its time to check the turbo shaftplay.

RotaryEvolution

iTrader: (30)

a quick visual inspection of the couplers usually won't cut it, sometimes removing the Y pipe coupler will show a tear on the backside.

BelgianRX7

There is no coupler inbetween the y-pipe and the crossover tube, it's attached like this:

BelgianRX7

is it expensive to get it fixed? or can you easely do it yourself?

Brody8877

iTrader: (10)

Twin Turbo Diag.
Troubleshooting

BelgianRX7

Thanks alot, I'll go check it and go through it step by step.

RotaryEvolution

iTrader: (30)

oops, i missed that you have the late model crossover pipe.

BelgianRX7

Yeah I forgot to mention that sorry my bad! Anything else it might be?