its dead, and vw killed it

[jfoldbar]

crank speed sensor

sometimes my 2.5 tdi wont start, mechanic says next thing to try is the crank speed sensore. has anyone changed this before and why did they change it?

[jfoldbar]

injector seals.

i have an 04 2.5tdi t5. im thinking that injector seals are gone. has anyone had this happen before and what is the cost for a new head if it needs it

[jfoldbar]

invws, are you in sydney, what was the independant u used. ive been using muller and muller for a few years and as yet not too sure if i can trust them or not. thinking about trying vw again.

[IN2VWS]

No, I am in Melbourne.

[jets]

i finnaly had time to take it to mechanic. fault came up as air mass meter. does anyone have any thoughts on this?

In my first T4 2.5TDI it suffered from lack of power up hills but on the flat it was reasonably fast. I drove it home like that from Forster on the coast north of Sydney. When I arrived back in Adelaide I booked it in to VW to find out what was wrong & get any stored codes read.
This cost from memory around $80 [2003] but couldn't say for certain whether that was the problem.
They quoted around $550 for the part & another $80 to install. I bought a bosch part from Intervolks [now Imparts] for $380. It took me 7 mins to install it myself.
Reading the UK forums it appears that you need to at least buy a Bosch part because some of the cheaper ones don't last /work properly.
I am sure the air mass meters would be a lot cheaper on Ebay UK than what I paid.

[jfoldbar]

someone said that injector seals may be shot and caused hairline crack in head that allowys diesel into sump. anyone heard of this? wouldnt it blow smoke if diesel was in sump?

[jfoldbar]

diesel in oil

i have an 04 2.5 tdi 180k . lab test shows i have 13% diesel in sump and it must be dealt with. any ideas how it got there and what to do about it?

[IN2VWS]

Sorry, I don't have an answer to your question, but I am curious as to what made you decide to get a lab test done on your oil, and was it expensive?

[kaanage]

Sounds like you have a lot of blowby - is your compression low?
An oil change will sort the oil for the moment but to fix the blowby, you will probably need to pull the engine down and look for sticking/worn rings

[Transporter]

It could also be leaking injector(s).
How often did you change the oil in engine and what oil did you use?
Is there excessive metal in the UOA result?
Can you also post your complete UOA result here?

[jfoldbar]

i'll try to answer everyones question. i got oil tested cause of starting issues.pretty much trying to rule something out. but it turned out ive ruled that in. it cost about $40 and took ten minutes. that part was easy.
i cant see any evidence of any engine problems. it blows no smoke.goes fine and doesnt use oil (been getting topped up with diesel). dont know about compression but still goes the same.

im not sure what type of oil they use, did ask them but forgot. but they are a vw mechanic so id hope they know. was changed 5000k ago. gunna try to change it again asap to keep % of oil as high as possible.
they gave me a paper readout and am not sure how to scan. will ask them if they can email result to post. it shows metals and water etc inside the normal Parameters suggesting normal/not excess engine wear(which is 1 good thing i suppose).
it was suggested to me leaking injector seals, thats what made me test oil, but cant be sure if its injectors. it would be a shame to replace injectors and mayby head if thats not the reason. wonder if there is a main pump on these things that is oil cooled and leak could be there. i wonder if it possible that diesel in sump is a result of poor starting, not a cause.ie. if fuel goes to combustion chamber when starting, but combustion doesnt take place(for whatever reason) then could that fuel make it past rings into sump and stay there? and as kaanage suggested would have to mean low compression. but that would mean engine wear and hence metal in oil, and also excessive smoke.

so im just really throwing ideas around, which probably doesnt hurt as i have a feeling that us t5ers are going to start seeing more of this issue.

has anyone replaced the injectors in these?

not real sure what else to say, hoping to get more ideas?

[BrianJ]

Search for threads on T5 Forums - VW T4 Forum - VW T5 Forum
The Brick-yard
in the T5 and engine section, there are cases of cracked heads between diesel oil gallery and no.3 injector, as well as a few other faults. Some threads have methods for working out which fault it might be.

Brian

[jfoldbar]

thanks for the reply brian. already checked these forum umpteen times and fairly familiar with what they are saying. still not 100% bought though. someone on this site said the cause of their starting issues was tandem fuel pump leaking diesel diesel. and that made me think if diesel leaked ito sump, can that cause injectors seals to leak and head to crack. so here are we thinking that cracked head is cause of problem but mayby its a result of a problem and there is another cause

[BrianJ]

thanks for the reply brian. already checked these forum umpteen times and fairly familiar with what they are saying. still not 100% bought though. someone on this site said the cause of their starting issues was tandem fuel pump leaking diesel diesel. and that made me think if diesel leaked ito sump, can that cause injectors seals to leak and head to crack. so here are we thinking that cracked head is cause of problem but mayby its a result of a problem and there is another cause

I agree, its tricky. One of the long threads on those forums has details about tests to do to identify which fault it could be.

Good luck
Brian

[Transporter]

thanks for the reply brian. already checked these forum umpteen times and fairly familiar with what they are saying. still not 100% bought though. someone on this site said the cause of their starting issues was tandem fuel pump leaking diesel diesel. and that made me think if diesel leaked ito sump, can that cause injectors seals to leak and head to crack. so here are we thinking that cracked head is cause of problem but mayby its a result of a problem and there is another cause

The forums diagnostics have limitations. What is your mechanic saying?