CNG milage dropped, Why?

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CNG milage dropped, Why?

I recently installed CNG on my Civic Exi 05, prosmetic. In the first month it used to give 110-115 km with 58 kg cylinder. After a month or so it is giving 90-95 milage. There is a drop of about 15-20 km. After this drop i replace the Air filter with a new original one but there is not much improvement. Plugs were changed a month earlier.
What could be the reason of this drop and how can i fix it?

Gari.pk User 2355 asked on 25 Jun 2010 15:53:02 pm

1 Answer