pd 130 heavy smoker

[namman]

Hi all . Help needed . I have a pd130 52 plate , when i first got the car it smoked badly so i replaced the turbo cartridge (cheap and not so cheerfull ) from ebay for around 80 quid . This did nothing to solve the problem of clouds of smoke when the throttle was down . Now the engine had done over 200 k so i decided to get a refund on the turbo and pull the engine out for a better inspection , suspecting valve wear , piston ring wear , valve stem oil seal wear , etc etc . so in the mean time i baught a low milage engine and fitted it while rebuilding the original unit ( which wasnt faulty ) guess what ??
same problem , engine smokes more than my old lady did . so a turbo was baught from ebay again , £ 500 this time and once fitted , smoked again . i cleaned all pipework , intercooler , fitter new egr , new ( complete exhaust ) etc , i checked the diesel fromn the filter to see if previous owner used "red " it looks and smells like it should and now im out of ideas , and patience .
Any one know why both engines have smoked after fitting new turbos ?

[Sam]

Welcome to VWAF :)

[namman]

Thanks Sam

[namman]

I have a Vgate , this is what came up 31457 could this realy be the problem ?

[Sam]

What car is this engine in, you've not said.

Once I know I'll move the thread from the Welcome section to the correct forum where you'll hopefully get the assistance you require.

[namman]

Golf mk 4 pd 130 .
sorry , im new here .

[ragebe]

Black smoke caused by :- faulty injectors, faulty injector pump, duff air-filter, duff turbo.
White smoke :- low compression, water in fuel, fuel pump
Blue smoke :- faulty injector pump, faulty lift pump, valves, valve stem seals, over filled the engine oil.

Sent from my STV100-4 using Tapatalk

[rowdy-999]

Dont buy a cheap AFM if you replace. Genuine Bosch only.
Have you not read the codes before?

[Rob69]

good place to start and the AFM has been common to both smoking engines

I have a Vgate , this is what came up 31457 could this realy be the problem ?

[ragebe]

If the air-filter module isn't controlling the oxygen intake and you're getting an oxygen shortage, you'll get black smoke.

What colour is the smoke?

Sent from my STV100-4 using Tapatalk

Edited to add a useful link : Diesel smoke explained (https://www.bellperformance.com/blog/bid/115989/diesel-engine-problems-black-smoke-explained)

[niall campbell]

replace the Mass Air Flow meter firstly

hopefully you have a nice new air filter and diesel filter

Do you know what mpg you are getting ? Just to see if your throwing lots of diesel out the back

[namman]

The smoke is black , i have replaced the turbo , egr and maf sensor , new ai filter was replaced when serviced , car haz done 0 miles since then . new oil filter and oil . s

[namman]

I baught a non bosche unit £20 quid . knocked the code out and it hasnt come back (yet ) still smoking when engine undr pressure (when revving ) on tick over its fine .

[namman]

MAF , was same in both cars

[namman]

Hi , a new bosch MAF was sourced and fitted and now the problem is solved . no more a haevy smoker .

Thanks to all for there contribution and help to solve the matter .