1999 2.5 v6 tdi - power cutting, possible pump timing

**Drifterwanab** · 16-12-2011,10:41 PM

Its been power cutting with loads of white smoke when it does - and car seems more loud than other ones i have seen

I have noticed its had the fuel pump changed at some point (breakers yard numbering on it)

So i have been thinking its the pump timing

Took me a while to find out how to do it, but i think i have done it

basic settings group 04

after 10 seconds it gos to full retard and zone 3 goes from 8degres btdc to around 15degrees

Now should that be around 2 degrees not 15 ?

ps just as a little side note, my car label tag in the boot says i have the AFB engine, but vagcom shows it as AKE.... does it do that or have a had a engine swap?

**Crasher** · 17-12-2011,12:14 AM

It should be 2° ATDC ± 2°, after top dead centre, not BTDC. Ignore the label on VAG-COM, it does that.

**Drifterwanab** · 17-12-2011,12:42 AM

Thanks. Think i understand that

So 15 degres is wrong either way?

**Crasher** · 17-12-2011,12:56 AM

Very much so.

**Drifterwanab** · 17-12-2011,01:02 AM

Thanks crasher you save my sanity yet again!

**Drifterwanab** · 17-12-2011,01:31 PM

ok

I set about doing the timing this morning. i got it to around 1.5 atdc

and it now runs worse!! the most amount of unburnt diesel smoke i have ever seen and it wont rev at all just chucks loads of smoke out?

confussed i need help!

heres my vcds

Theres tipex marks every where under the belt cover. I think someones had the belts of and F'ed it up

Its possible that pump timing is now right but cam timing is out?

**Crasher** · 17-12-2011,02:39 PM

That is because you have set it advanced (early), not retarded (late).

**Drifterwanab** · 17-12-2011,03:23 PM

god... iam out of my depth here..... thank you crasher

is this now right????

**luke1135** · 17-12-2011,04:48 PM

Yes thats right on the Inj timing. Is it all sorted now? Reason I ask is that I found my injection timing advanced 15 degrees also and it turned out that the cam timing was out as well (by the same amount since it drives the pump). I brought it like that was so don't know whether it was set wrong or had slipped out of sync by a tooth on the crankshaft. Sorting that made it run like an audi instead of a tractor.
So if its not 100% now do at least check the cam timing.

**Drifterwanab** · 17-12-2011,06:26 PM

Thanks luke

It now starts up pretty much straight away instead of about 8 cranks. Doesnt seem to be power cutting now, only a tiny bit of unburnt diesel smoke and now some black smoke, seems to have a fair bit more poke but still seems a bit more tractor sounding then i think a a6 should.

Will have to try and find the proces for checking the cambelt timing and make sure its right.