a little help required.. just a couple of days ago, got the cng settings adjusted and changed the spark plugs only (not the plug cables)... running on petrol has been fine but on cng the pickup has drastically reduced, even if i press the accelerator to its fullest, the car hardly exceeds 40km/h.. with a/c on, it becomes even worse..
all i wana know is that is it necessary to change the plug cables too??? or its just the problem with the cng settings... thanks
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