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Thread: Help Regarding CNG Mileage Of My Accord 88!

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    Question Help Regarding CNG Mileage Of My Accord 88!

    Recently i bought 88 Accord M/T in good condition. Car is MA well maintained. Recently change engine oil, gear oil, power steering oil, brake oil. Changed plugs & oil filter. Air filter is in good condition checked it personally so didn't change it. On CNG it idles at 800 RPM without AC and at 1000 with AC. I am not sure about the size of the cylinder. When full empty it gets full at 600 rupees. I drive with a light foot with AC on and in within city. What mileage should i get? I also maintain pressure of all 4 tires properly. Trunk is free of junk.

    Sharing a link. Check out my car. https://www.pakwheels.com/forums/mem...3rd-gen-accord


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    @Xulfiqar. Any idea?

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    90-110 km

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    toxic said the right milage .while running on ac with cng keep your engine in motion no light pedal
    http://www.pakwheels.com/forums/d-i-y-projects/220840-cb350-rebuild-home

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    Quote Originally Posted by ToxicDevil View Post
    90-110 km
    My car gives a max of 80. When i told my relatives that it gives me 80 all were pretty much amazed. My cousin's alto gives max 100 so i think my car gives a good mileage. My car is non EFI. Also forgot to mention i also flushed the system and poured in ABRO coolant which is made in US. Red in color. BTW also note my car is not having thermostat and both the fans are direct. I didn't get the CNG tuned and serviced since i bought it.

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    Quote Originally Posted by yasirsa View Post
    toxic said the right milage .while running on ac with cng keep your engine in motion no light pedal
    I thought driving with a light foot is good for engine and economy.

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    I think mileage i get is perfect. 5 KM ka safar tou 2 KM traffic jam! Karachi kai aj kal jo halaat.

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    My civic EFI gives around 100-110 km with ac and 120-140 km with out ac. And it is auto. Fills completely in less than 600 rupee i.e in around 7.5 kg
    I am telling about Lahore city around half the distance I travel in in traffic and other half is on relatively cleaner canal road.

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    Quote Originally Posted by ToxicDevil View Post
    My civic EFI gives around 100-110 km with ac and 120-140 km with out ac. And it is auto. Fills completely in less than 600 rupee i.e in around 7.5 kg
    I am telling about Lahore city around half the distance I travel in in traffic and other half is on relatively cleaner canal road.
    Not possible. There are many 6th gen owners in family. Even i had a 6th gen 3 times. It will give a max of 90 with A/C and 110 without A/C. The traffic situation in Karachi is madness. Nothing like Lahore. I have visited Lahore and drove a car there.

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    Better CNG mileage can be achieved by the connection of coolant lines to CNG kit. It is a recommended procedure. Estimated charges : 700rs

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    Quote Originally Posted by axe.effect View Post
    Better CNG mileage can be achieved by the connection of coolant lines to CNG kit. It is a recommended procedure. Estimated charges : 700rs
    In a hot climate it's not worth it.

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    It is also said, thermostat valve and auto fan is not worth for hot climate. But when you use it, you notice much better performance and mileage.

    I recently installed coolant pipes and getting 25-50 kms more than before, per 50 size cylinder.

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    @zainiqbal1990

    in karachi cng is not of quality as in punjab so i think 80 is good for 1600 cc .. there are few things which might give little improvement

    i -- cng tuning -- please note kit dismantling is not recommended by manufacturers (written in landi ranzo maintenace manual)
    ii -- keep idle to least (both on and without ac)
    iii -- plug gap to 0.7 and timing to 20-22 degrees
    iv -- use venturi instead of adapter
    v -- cng fine tuning
    "You have not lived today until you have done something for someone who can never repay you."

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    Quote Originally Posted by Naweed View Post
    @zainiqbal1990

    in karachi cng is not of quality as in punjab so i think 80 is good for 1600 cc .. there are few things which might give little improvement

    i -- cng tuning -- please note kit dismantling is not recommended by manufacturers (written in landi ranzo maintenace manual)
    ii -- keep idle to least (both on and without ac)
    iii -- plug gap to 0.7 and timing to 20-22 degrees
    iv -- use venturi instead of adapter
    v -- cng fine tuning
    I think tuning is not required it runs perfectly fine. Idle with A/C is 1100 RPM and without A/C 800 which is weird because RPM drops when A/C is turned on. In my case it get quite high. Had bought new NGK plugs so the gap is stock. Will try to install venture if possible. I don't know if it's having a venture or a adapter.

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    Quote Originally Posted by zainiqbal1990 View Post
    I think tuning is not required it runs perfectly fine. Idle with A/C is 1100 RPM and without A/C 800 which is weird because RPM drops when A/C is turned on. In my case it get quite high. Had bought new NGK plugs so the gap is stock. Will try to install venture if possible. I don't know if it's having a venture or a adapter.
    There is an independent ac rpm adjustment ... try lowering rpms on ac ..idle rpm is critical in attainging good fuel average .. get the rpms down then observe mileage before taking any other step
    "You have not lived today until you have done something for someone who can never repay you."

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    Quote Originally Posted by Naweed View Post
    There is an independent ac rpm adjustment ... try lowering rpms on ac ..idle rpm is critical in attainging good fuel average .. get the rpms down then observe mileage before taking any other step
    I'm not sure if there is a independent RPM adjuster for A/C. The main RPM adjuster is under the air filter assembly right next to carburetor.

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    Quote Originally Posted by zainiqbal1990 View Post
    I'm not sure if there is a independent RPM adjuster for A/C. The main RPM adjuster is under the air filter assembly right next to carburetor.
    there would be a vacuum pump in the same area .. when u turn on ac the vacuum operates and pushes the acclerator link to increase rpm .. the connection between the vacuum and accelerator link will be a rod or something similar which has an adjustment screw
    "You have not lived today until you have done something for someone who can never repay you."

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    Quote Originally Posted by zainiqbal1990 View Post
    I'm not sure if there is a independent RPM adjuster for A/C. The main RPM adjuster is under the air filter assembly right next to carburetor.
    there is one - the picture you posted on your thread for the ac idle up has a screw adjuster which you can turn to adjust the rpm of the engine with A/C running. adjust it so that the engine idles at 900 rpm with A/C (its factory spec - dont listen to the ustaad mechanics on this)

    Help Regarding CNG Mileage Of My Accord 88! -1487192

    your car will never achieve more than 90 km on one full load of CNG - you should install the thermostat and correct the fan wiring and make sure the distributor is working perfectly - warm engine (82C minimum) with all items in tune will increase the CNG mileage.

    btw the coolant you are using is useless - its water with some colour in it, use a proper branded coolant in it.

    btw - your car is 1986 model - 86 had the nicer seat fabric and the fuel/temp gauges that have needles pointing outwards - it also would have a golden valve cover and also have a build date - usually between october and december 1985 right on the silver plate on the left of the car.
    ZRS - Zulfiqar Racing Systems ..... - professionals at work - at crackwheels.com

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    Quote Originally Posted by zainiqbal1990 View Post
    In a hot climate it's not worth it.
    who told you that? - if you do a very fast and long run on CNG - your gas regulator can freeze - the coolant lines are to "heat up" the regulator not "cool" it.
    ZRS - Zulfiqar Racing Systems ..... - professionals at work - at crackwheels.com

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