VW Passat 1.4 TSI CNG 110Kw runs BAD [Sitemap]

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Nezakabude

16th January, 2018, 10:17 AM

Hi, i need help, can anyone of you guys check this flash?

New spark plugs, coils, parrameters from MAS are OK... but when motor is cold starting almost 30 times... no reaction on throttle

No DTC (i have unplugged CNG so 2 dtc stored for now) Edit: sparks are black after few km...

Nezakabude

20th January, 2018, 11:42 PM

so, petrol injectors are bad.. :)

kospoz

21st January, 2018, 10:23 PM

how many km has the car?

Nezakabude

22nd January, 2018, 08:22 AM

149k Km :) i also thought it can be cracked piston, cuz these engines around 2k9 (1.4TSI with turbo and compresor) often has this fault. But it runs ok on CNG... :)