Thread: Td5 losing power but not completely

Originally Posted by Tins

Poor man pays twice... Ask me how I know.

At the time we were in the middle of WA and I got what I could get in a suitable time frame....

Anyway. Yesterday I changed them for a brand new set of o-rings and washers which are genuine.

Today I managed to be able to take it for a drive along the freeway and around town and it feels like it's running as well as it ever did. Upon examination of the recorded data from the Nanocom it looks like there may still be some slight concerns. Nothing obvious while driving though. Amway here's the data.... I sincerely hope it's fixed as we need to take our daughter and grandson to Melbourne tomorrow which is about a 200km round trip and a breakdown would be well, unthinkable....

Hi Mark

I haven't read through the thread, but you either have a disconnected MAF or it's no good.

Also don't know if Nanocom misrepresents the EGR inlet as maybe the boost modulator from the looks of it ( James? ) but if you have the EGR blanked it wouldn't matter.

I can't see anything else amiss, except possibly a slightly restricted air filter.

Originally Posted by discorevy

Hi Mark

I haven't read through the thread, but you either have a disconnected MAF or it's no good.

The MAF is disconnected because it's no good. It, according to Nanocom, reads far too low.

Also don't know if Nanocom misrepresents the EGR inlet as maybe the boost modulator from the looks of it ( James? ) but if you have the EGR blanked it wouldn't matter.

I can't see anything else amiss, except possibly a slightly restricted air filter.

The EGR is blanked off and the air filter could probably use being replaced.

If you get rid of the clear anomalies in the cylinder balance columns it appears pretty good apart from a few small areas where it seems a bit all over the place on all cylinders. I'm guessing that these are anomalies as well. Of course not having an air bleed valve installed may be having an effect.

Originally Posted by discorevy

Hi Mark

I haven't read through the thread, but you either have a disconnected MAF or it's no good.

Also don't know if Nanocom misrepresents the EGR inlet as maybe the boost modulator from the looks of it ( James? ) but if you have the EGR blanked it wouldn't matter.

I can't see anything else amiss, except possibly a slightly restricted air filter.

The MAF is unhooked, I think that has just been replied too, and yes the nanocom does misreport some EGR values, but naturally I can't remember which one is incorrect!

I'd tighten the wastegate rod one thread at a time untill it goes to overboost then one back cos it's a bit low on boost IMO... the rest looks OK, the cylinder balance is relevant only at idle and no probs in that area.

Originally Posted by sierrafery

I'd tighten the wastegate rod one thread at a time untill it goes to overboost then one back cos it's a bit low on boost IMO...

I believe I have a boost leak somewhere - I can hear it at about 2200 rpm.The boost hoses are all good so I think it's he intercooler. I'll investigate it over the weekend.

the rest looks OK, the cylinder balance is relevant only at idle and no probs in that area.

Thanks very much for that. You've been a fantastic help throughput this exercise.
Thanks again...

Originally Posted by Markf

At the time we were in the middle of WA and I got what I could get in a suitable time ..

I hear you.

[QUOTE=Markf;3232508]I believe I have a boost leak somewhere - I can hear it at about 2200 rpm.

I assume you've confirmed the hissing/leaking sound is not from the exhaust manifold i.e. broken stud, warped manifold..... could explain why the turbo isn't spooling up to pressure.

Discofender