Dear all,
I have Honda accord inspire 1990 which engine model is G20A. I have both octane and CNG (compress Natural Gas) option. It’s ok with CNG option but when I switch into Octane its RPM going down to 500 rpm when I press Clutch and shift the gear. Basically it’s a manual gear. But if i shift it to neutral then RPM shows 900. Even if I want to accelerate its touch only 3500 RPM then its shaking don’t cross 3500 border line. But on CNG option its touch 6000 RPM even more. Few days ago I had clean up my AC Pump and fuel injector. But my problem does not solve. Please help me out about this problem.

 

Open up your carb and spray some carb cleaner down the throat. Make sure your air filter is new and clean.