Hello friends,

I have Audi A4 B7 1.6i with LPG 75kw/102hp for 3 years and few months.

First the car had first start issue, like in the morning first start was always bad it could go with low revs, like it struggles to go more than about 600 rpm and it mostly goes down and I should start again and sometimes I should hold the throttle for car to lift the revs and to start with the work normally. And in September when the car gets working temperature it has dodgy Idle and the revs were going down and sometimes it was big going down like in the area of 400-600 rpm. After that the car while driving once loses power sounds strange and the check engine is blinking. I was trying very much. Before this few months ago I changed spark plugs, then tried it with another MAF Sensor, I also tried to drive on Petrol few days no LPG, but the misfire continue. The faults that it has are

P0301 - Engine cylinder 1 misfire

P0304 - Engine cylinder 4 misfire

Don't remember this code, but it was Random Engine cylinder misfire

Also had

17526 - oxygen (lambda) sensor heating b1 s2

P118 - 009 - Open Circuit

but they said this was because of LPG and because LPG has drier mixture than the Petrol and the sensor mess up.

I also then put new Spark Plugs Cables and again the same.

And forgot to write, few times car has turned off herself while driving, mostly when I had pressed clutch.

The car is properly maintained and on every 10.000km I change Oil and all their filters.

Does someone has experience with this?