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Discussion Starter #1
Hi to all.
Please help me with my Seat Leon 1.9 TDI.
2 months ago,the engine of my car goes bad...one of the admision valve had broken and brake my piston...
The car repair was made in a Bosch workshop ... but ... what's new in Romania? ... obviously something goes wrong ...
The car starts perfectly, sits idle with no problem but very difficult to pull/loss of power... more turbo execute task enter somewhere around 2800 rpm ...
A printscreen to show you some sites to a scan with vag and image with parameters...
After removing error from list,the list remains empty but after a run test,the P1556 error occurs.
Please note the value of the flow meter and egr ...
Please give some suggestions ... or if someone has this problem happened ... and how solved it...

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If the intake valve and piston was broken, that means you need an engine rebuild. That would be the first place to look. But it looks like the MAF value is bad because the numbers are all way off. The boost looks good though.
 

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Discussion Starter #3
I rebuild my engine in a Bosch service...and the MAF is good becouse i tried with a new one ...
 

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There should be a vacuum diagram on the inside of the hood. I don't know if your engine is the same but it should be similar. Here is a vacuum diagram for the ALH engine. Make sure that they are all correct. It's possible that some got switched if your engine was worked on.

If you're sure that the MAF is good the EGR is a possible problem. Also check for boost leaks. Here is an article that has troubleshooting steps for fixing low power:
http://www.myturbodiesel.com/1000q_how_to/multi/lowpowerfix.htm

 
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