Minor coolant leak...

[scxtasy]

My 2006 CTT (with only 17,000 miles on the clock) has developed a minor coolant leak. It's hard to tell exactly where the leak is, due to the tray under the engine, but do others here think this might be the pre-cursor to the dreaded coolant pipe failure? Thanks.

Andrew

[Loren]

Best to check the coolant pipes - if they have not been replaced they should be.

They usually start with a small leak and then one day - boom they let go.

[wvicary]

Water pumps also have a high failure rate.

[scxtasy]

Best to check the coolant pipes - if they have not been replaced they should be.

They usually start with a small leak and then one day - boom they let go.

Thanks Loren,

I'm 99% sure that the pipes are original as I have all of the service records for the vehicle and they haven't been changed. Given how buried the pipes are, how hard is it to check them? FYI - The leak is definitely towards the rear of the engine...

Andrew

Edited June 29, 2010 by scxtasy

[Loren]

You will need a flashlight and perhaps a mirror for checking.

If they have not been upgraded to the metal tubes - they should be. Porsche book time on this is only 1 hour.

[wvicary]

I thought the coolant pipes under the intake manifold was something like 8hrs of labour??

[Loren]

I thought the coolant pipes under the intake manifold was something like 8hrs of labour??

Interesting the TSB says 100 TU (and 100 TU = 60 minutes). Seems low to me too.

Perhaps they mean just the pipes and not the rest of the disassembly.

[scxtasy]

I thought the coolant pipes under the intake manifold was something like 8hrs of labour??

Interesting the TSB says 100 TU (and 100 TU = 60 minutes). Seems low to me too.

Perhaps they mean just the pipes and not the rest of the disassembly.

I have a set of pdf files for the cayenne but am having trouble locating the disassembly instructions to get to the pipes. Any idea which manual this info is in? Thanks.

Andrew

[mudman2]

There is not one specific place for the instructions because (I guess) the fool who designed them did not think they would fail. There is a pictorial guide on doing the work your self either here or on Rennlist. From what I saw it is a PIA but doable. I paid $823 after PCA discount, the parts are $523 from onoine sources.