T4 help! More smoke than a steam train!

[VR6kid]

Don't buy them from VW.
I used to get mine from here Home - HSY
Got branches in QLD.
(tell them you're a Courier and use it for work if they say Trade Only)

As for oil..........I think I went up to the 15-40 stuff.

Also, check that they didn't overfill it with oil...............that makes them smoke and can wreck your Cat Converter!
(my mechanic did that once)

Thanks mate, Took it to Volkswagen to get it checked over as i wanted to make sure it was reliable, They came back with over $4000 worth of repairs needed.... I did all them myself for around $500 its such a joke.... Ive just put in some valve saver and nulon stop smoke as a temporary thing until i get round to the oil change, First thing i checked was too see if they overfilled it but it was perfectly full so doubt it was that either.

The car has also started missing and or running extremely rich as well... I think i drove to work on about 3 cylinders yesterday and the car kept running for 10 seconds after i turned it off, Not sure what this could be hoping just spark plugs and leads, could be anything im assuming AFM, Dizzy problems, Timing the list goes on. Compression tester should be here tomorrow, Any recommendations on a scanner? will a cheap VAG-COM Cable be fine? think there about $15 off ebay.

[LogicprObe]

I never used the scanner on my T4 as they are pretty basic.
On mine it was always plug 1 would gum up, followed by plug 2.
At least it's the two that are easiest to get to!
Going around a right hand corner quickly always gave a big puff of smoke because of the oil rushing over to that side.
When I did the leads and plugs, I got a new disi cap and rotor as they are relatively cheap and then at least you know it's not them if faults persist.

I had one that only occured in light rain that the NRMA and my mechanics couldn't figure out.

It would just stall.............then after about 10 mins, it would start again and run with no problems..........until it rained again.

They tested the coil and it was fine............but I changed it eventually and the fault went away.
So, I hooked up the old one in the dark and sprayed it with a water mist which resulted in sparks shooting out of the case.
It was a pinhole breach that could only be seen under a magnifying lamp.
Just bad luck that it was really hard to spot............but it all goes into the memory bank!
(coils for these were quite reasonable too)

[Sunny43.5]

Thanks mate, Took it to Volkswagen to get it checked over as i wanted to make sure it was reliable, They came back with over $4000 worth of repairs needed.... I did all them myself for around $500 its such a joke.... Ive just put in some valve saver and nulon stop smoke as a temporary thing until i get round to the oil change, First thing i checked was too see if they overfilled it but it was perfectly full so doubt it was that either.

The car has also started missing and or running extremely rich as well... I think i drove to work on about 3 cylinders yesterday and the car kept running for 10 seconds after i turned it off, Not sure what this could be hoping just spark plugs and leads, could be anything im assuming AFM, Dizzy problems, Timing the list goes on. Compression tester should be here tomorrow, Any recommendations on a scanner? will a cheap VAG-COM Cable be fine? think there about $15 off ebay.

Just as a bit of help one of the Forum Supporters here in Brisbane is a fully qualified top VW mechanic who drove a T4 as his daily work van , he knew more about the T4 than anyone I knew he helped me with my sons T4 and used to service my T5 as well . Now his workshop is in Slacks Creek but I havent been there since mid last year but I think he is still there try this link Alba European - Home | Facebook

[VR6kid]

Thanks mate will try and hit him up, Cheers.

[VR6kid]

Did a compression test today.
Cyclinder 1: 180psi
Cylinder 2: 180psi
Cylinder 3: 200psi
Cylinder 4: 200psi
Cylinder 5: 205psi

Not sure what the compression on these should be but that seems to be good If not a little high I’m not sure. Would any one know what the compression on a 2.5l petrol t4 should be?

Also the car is over fueling on cylinder 1 as it was soaked in fuel, all the other plugs seemed fine. Maybe a leaky injector? Not sure.

[LogicprObe]

Like I said, it will be the valve stem seals.
It's the way the engine's designed.........1 and 2 run colder than the others and really need 'hot' plugs that I could never source in Aus.

[jets]

Not sure what the compression on these should be but that seems to be good If not a little high I’m not sure. Would any one know what the compression on a 2.5l petrol t4 should be?

I had a look in the Bentley manual that covers the AAF & ACU engines. I don't know what engine you have, is it the AET?
Anyway the AAF is quoted as 131 to 174 psi. The ACU is 145 to 189psi. All these figures are for a new engine, could be more with carbon deposits or higher compression engine.

[VR6kid]

I had a look in the Bentley manual that covers the AAF & ACU engines. I don't know what engine you have, is it the AET?
Anyway the AAF is quoted as 131 to 174 psi. The ACU is 145 to 189psi. All these figures are for a new engine, could be more with carbon deposits or higher compression engine.

I believe mine is the AET engine... all i know is the engine isn't low on compression at least, regardless though sounds like the head will need a rebuild.

[LogicprObe]

You never know.........the Slacks Creek guy may be able to change the stem seals without removing the head.
Always best not to disturb the head if at all possible.

[jets]

You never know.........the Slacks Creek guy may be able to change the stem seals without removing the head.

That is possible, but if the valve guides are worn that will be a waste of time.
I did that many years ago on a Mercedes 250 that would blow blue smoke after coming down a hill & accelerating again.
Mercedes & the aircooled VWs used to wear the valve guides & then the seals wouldn't work.