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Discussion Starter #1
Hi, I have a 2002 2.5 AJT motor, covered 33k. Never used any excessive oil. Been smoking for last couple of years progressively getting worse. Stripped the motor down. Block and internals were as new. Fitted new rings and shells as a matter of course. The head was a different story. It's a wonder it was running. The inlet and exhaust ports were blocked and valves were gunked up with a soft carbon. Pretty certain it was fuel. I've overhauled head, again no wear on parts. New VAG injectors, turbo and egr fitted. All back together. Primed the fuel and started first turn of key. Exactly the same, smoking white/blue smoke. Any ideas would be appreciated.
 

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Take it for a drive see i it clears...are the new injectors stanadyne or bosch ? 88Bhp had stanadynes as standard... Is the pump timed right ?
 

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Dynamic pump timing?

It seems like this is my stock answer, but as these engine get older and older the number of people who have worked on them diminished and the proper service schedule/how they work gets forgotten!

The pump timing used to be part of the service schedule on these engines as it does drift. It accounts for the vast majority of smoke/poor start/poor running/low power conditions.
 

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Take it for a drive see i it clears...are the new injectors stanadyne or bosch ? 88Bhp had stanadynes as standard... Is the pump timed right ?
Drove it for around 50 miles with no change. The new injectors where bought from VAG Part No S 074130201LX. So, not sure what make,I'll call them tomorrow. Pump timing is set and and at a steady 0.55. Thanks for input.
 

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Discussion Starter #5
Dynamic pump timing?

It seems like this is my stock answer, but as these engine get older and older the number of people who have worked on them diminished and the proper service schedule/how they work gets forgotten!

The pump timing used to be part of the service schedule on these engines as it does drift. It accounts for the vast majority of smoke/poor start/poor running/low power conditions.
It starts first time, idles perfect and pulls really well. I'm going to check pump timing again this weekend. Thanks
 

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Where do you fill up? At the supermarket?
My smokey 2.5 AJT stopped smoking when I started using diesel from Shell/Esso/BP coupled with oil and filter change every year which has also helped.
 

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Is it using water ? do you get the head pressure tested ? Im think cracked head .... was the block decked and head skimmed ...
 

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Where do you fill up? At the supermarket?
My smokey 2.5 AJT stopped smoking when I started using diesel from Shell/Esso/BP coupled with oil and filter change every year which has also helped.
My old dad used to work at a major fuel depot....ALL the major suppliers AND the supermarkets got fuel from the same tanks!
The only different tanks were the "specialist" ones...that the suppliers had just added something into them.
 

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Discussion Starter #9
Take it for a drive see i it clears...are the new injectors stanadyne or bosch ? 88Bhp had stanadynes as standard... Is the pump timed right ?
Sorry for late reply, been full of flu. Bought them from VW but they can't tell me what make they were so, I'll pop one out and have a look. Thanks
 

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Where do you fill up? At the supermarket?
My smokey 2.5 AJT stopped smoking when I started using diesel from Shell/Esso/BP coupled with oil and filter change every year which has also helped.
Always used Shell. Do you use the premium fuel?
 

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Discussion Starter #11
Is it using water ? do you get the head pressure tested ? Im think cracked head .... was the block decked and head skimmed ...
It's never used a drop of coolant. Head was skimmed. System doesn't pressurize at all.
 
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