Testing Turbo

ataxidriver64 · Unread post by **ataxidriver64** » 20 Oct 2010, 18:09

Hi is there any way to test the turbo whilst it is still on the car? citroen C5 2.2 hdi auto.

JamesQB · Unread post by **JamesQB** » 20 Oct 2010, 20:41

You can take the intake pipe off it and spin the compressor to ensure it hasn't seized. Should spin freely.

Unread post by **Peter.N.** » 20 Oct 2010, 21:04

Disconnect the air intake pipe from the manifold, when you rev the engine you should have a strong draught from the pipe.

Peter

KevMayer · Unread post by **KevMayer** » 20 Oct 2010, 22:38

Get a turbo boost gauge and temporarily plumb it into the small pipework on top of the intercooler.

Use a long silicone pipe and mount the gauge in the car with the window slightly open to let the pipe through.

On the 2.2 Hdi you should get 1.1 bar at 2000 rpm and 1.2 bar at 3000 rpm.

ataxidriver64 · Unread post by **ataxidriver64** » 20 Oct 2010, 23:17

it doesnt rev much now, would that be a fault?

Unread post by **citroenxm** » 21 Oct 2010, 08:29

Sounds like shes slipped into Limp mode...

you can be guessing all day what could be wrong, she needsto be plugged into a Lexia diagnostic machine to have the faults read...

Paul

ataxidriver64 · Unread post by **ataxidriver64** » 24 Oct 2010, 20:18

Well turbo was broken, now a new one fitted.
Bearings had given up the ghost.

Deanxm · Unread post by **Deanxm** » 24 Oct 2010, 21:01

Sorry to hear your having trouble
Is that the new bearings have given up? if so there is an oil feed issue, the turbo wasnt primed before fitting or it was not ballanced and broke through the oil film the main shaft is suspended on.

D

KevMayer · Unread post by **KevMayer** » 27 Oct 2010, 13:06

On my 2.2 Hdi, I've just had a boost gauge connected as above and at 70 mph in 4th gear up a long hill on a dual carriageway I got just over 1.1 bar. Peaking very briefly at approx 1.2 bar.