I have cultus VXRi 2007 with EFI. It's having a strange problem. When on CNG, its RPM starts fluctuating(it goes down/up), on petrol and in speed (in high RPM) there's no problem and it goes on quite fine. but as soon as i slow it down and press the clutch it fluctuates severly or goes off.
Sometimes after 10/12 KMs, it gets OK and there's no such prob. But now this happens very rarely that it becomes OK.
I repeat there's not problem when car is in speed or on petrol. Plugs are fine, filter is find, just got oil changed and mechanic checked tappets and said they are in fine position.
I visited a CNG experts, they said I would have to get it fixed from Suzuki using computer, I went to Ali Jan Motors service center, they just over-wrote ECU parameters and said it's done. But problem didnt get resolved. Their CNG specialist was on leave and they said get it checked by some CNG expert. I think they attached laptop wire with ECU only and did'nt check it using OBD DLC.
I am really frustrated now. Failed to understand where to go.
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