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Ranga
29th March 2018, 03:46 PM
Driving to Canberra today, the boost pressure alarm set at 25psi is triggering more and more frequently. Not really pushing the old 300tdi any more than usual. Any ideas regarding cause, solution and possible ramifications?

Edit: forgot to mention that EGT temps seem normal (<500)
nick_e
29th March 2018, 04:50 PM
Faulty wastegate actuator?

The wastegate should be opening when the ideal pressure is reached. If it is not opening for some reason then the boost pressure may rise above normal operating pressures.

Not sure if this is a problem or not at the pressures its reaching. Probably making it run quite lean.
nick_e
29th March 2018, 04:55 PM
Actually, If you have boost gauges/alarms and EGT gauge then I assume your running some type of boost regulator on the wastegate vacuum line?

Is this functioning correctly?
Ranga
29th March 2018, 05:59 PM
Actually, If you have boost gauges/alarms and EGT gauge then I assume your running some type of boost regulator on the wastegate vacuum line?

Is this functioning correctly?Gauges yes, regulator no. Hopefully someone at Cooma might be able to help me check the wastegate. If I stick under 25 would I be doing any real damage?
bee utey
29th March 2018, 07:04 PM
It could just be the waste gate operating hose that's split. My mate's had perished and fallen off the back of the turbo, meant the waste gate stayed closed.