2005 Chevrolet Optra Hi Own Last 1 Yr Fitted Cng Kit Around 3 Mnths Back

2005 CHEVROLET OPTRA
14 MILES
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Hi, I own Chevrolet Optra from last 1 yr. I have fitted CNG kit around 3 mnths back. initially it gave me a mileage of arnd 17 km/kg without any issues in pick up. However now i am facing problems with pick up. i took it to a mechanic & he asked me to change the spark plugs/cables. I replaced it. But still its giving me problem in pick up & mileage. Also, car gives hiccups sometimes.is it due to the defect in spark plug cables?
Nov 21, 2012 at 8:21 AM
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HMAC300
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normally when cng is fitted to a car you have to up the compression to get power, scan for codes and see if yo have anything there then check for leaks on cng system at engine.
Nov 21, 2012 at 2:52 PM
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