My mate has a 4x4 H Plate Saff and is is real need of some help......


He's had the engine rebuilt, stage 3, breather etc etc

His cars is smoking but symptoms to me are strange...

If you rev it when stationary it smokes
if you start it...NO smoke
If you drive it underload... NO smoke
If you let over run...NO smoke
If you re-apply throttle... IT Smokes

The car is collecting oil in the plenum and collecting around No4 piston!!??

The car also breathes fairly heavey.

The car seems to drink fuel.

The smoke is more bluey than black

Its been checked for mapping.... FINE

Its had a brand new Turbo.

He's checked compression and ALL OK

Leak tested and ALL OK


He's stumped!?? and i cant help him, so i thought i'd ask for him, due to him not been into the t'internet


Any help appreciated

 

no one?

 

if its cold on first start up; does it puff out a bit of blue smoke?
did it have new guides or valve stem seals?

 

Its doesnt puff anything when cold he says?

As im a bufty i helped him mint it the other week and the exhaust ( which i polished!! ) sutted up very quickly, and i thought fuel, but he says its been checked and is fine?? A VW mechanic looked and he seemed to think it had fuel in th eoil, but i couldnt tell TBH?

 

You say rebiuld, What parts were used and what parts replaced.

Mark

 

Its had new pistons,rings,valve guides,stem seals, tappets, cams, cranks etc etc

 

Take the inlet manifold off and look at the inlet ports around the valve giude, I have seen some engines that have had new giudes and its been leaking oil down the outside of the giudes.

Mark

 

would that collect in the plenum and cause the same symtoms under the conditions ive said?

He told me that the guides were oversized?

But what about the excessive fuel?

 

wouldnt that show on the leak test??

My mate works at sainsburys, so all he knows is VEG PMSL and im not that mech minded ( just basics!! )

 

Who checked the fueling and how,
What were the bore clearances,
The giudes could have damaged the head/giude as it went in, I have seen this often.

Mark

 

A leak down test only shows what sealing and how much, it cant show giude problems.

Mark

 

Mark you have PM

 

def worth checking the valve guides get someone to go over the head propely stem seals one of them may not be seated rite could be a mix of both but sounds very weired

 

Oil in the plenum is usually down to turbo.I,ve had this on mine found the turbo was leaking from the compressor into cooler and getting into plenum

Only way was to clean everything big job but worth it

You say its collecting around no 4 at the top? looking in around the spark plug hole or inside the bore? if the first around the hole its the cover gasket failed if the bore seems like the guides as Mark has suggested

Remember any oil in the combustion cycle will cause det so be carefull

Let us all know how u get on

Paul

 

will do, wont be seeing him till later in week, but last tim ei spoke he was throwing towel in!