Low power on 1.9 TDI AHF 81kW

cidades

Veteran Member
Joined
Feb 17, 2010
Location
Portugal
TDI
Golf MK4 >> AHF(81kW)
Hello, my car seems slow. The 'kick' when I floor the pedal is very weak.
Trying to found what's the problem with it I have:
-Replaced all vacuum hoses
-Cleaned intake manifold and EGR
-Replaced MAF
-Checked Errors/faults with VAG-COM, haven't find any.
-Checked injection timming, it was OK
-Checked boost pressure and MAF values, seems OK too. Only boost was about 0.02bar below requested, but I think that's not the problem.
-Replaced injector nozzles
-Replaced N75
-Water mist decarbonization

Other:
-400.000km on odometer
-Turbo's VNT moves freely
-Car doesn't smokes at all
-Never needed to refill oil between oil changes(every 15.000km)


Boost pressure:




MAF:



Timming:


Can it be related to compression leak? There's a screenshot that I take today but I'm not sure if channel 13 is related to compression




Any idea?
 
Last edited:

cidades

Veteran Member
Joined
Feb 17, 2010
Location
Portugal
TDI
Golf MK4 >> AHF(81kW)
Any help? please
It's the same engine as ALH, except injector nozzle.


edit:
Added logs
 
Last edited:
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