No boost

[dlipka]

Hi - The car is back on the road and runs fine, but the engine is not making full power - boost gauge might flicker to 0.1bar, but that is all.

I don't have the airbags fitted, does the engine derate under this scenario or am I dealing with another problem?

Thanks,

Derek

[Loren]

Different problem is likely.

Check the intercooler boost hoses.

[dlipka]

Thanks - The hoses are all new and connected. I would have also expected to hear a hole?

The car worked fine before I had it off the road for 18 months, but during that time I haven't touched the engine other than to replace the coolant...

[Loren]

It's pretty easy to have a loose hose not all the way on (i know I have done it).

IF the car runs good at low RPM but as soon as you start the hit the boost it runs flat then you have an air leak.

[dlipka]

Thanks - Do the waste gates ever stick open?

[Loren]

Metal or plastic waste gates? The plastic ones (OEM) are known to crack.

[dlipka]

Metal or plastic waste gates? The plastic ones (OEM) are known to crack.

Where are these things located? Are they connected to the lever arms on the turbos?

[RFM]

Loren probably meant the turbo bypass valves on the intake pressure circuit, called diverter valves, on top and rear of the engine. You probably meant the waste gate on the turbo itself, exhaust side, valve that discharges exhaust gases directly in to the exhaust at maximum boost pressure. This is an important difference in approach.

[dlipka]

Thanks RFM - have you experienced the problem that I am describing?

[RFM]

That sometimes occurs, you will still be looking, in first place, into the suggestions already given. Waste gates + actuators + controllers, connections, wiring's and tubing's, idem for the diverter valves, leaking inter-coolers, etc. Check also the intake pressure sensor values. If the car ran well before, the occurred problems are in first place installation related (created) IMHO. Success.