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Thread: CNG Mileage problem in Cultus VXRi 2007

  1. #1
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    Default CNG Mileage problem in Cultus VXRi 2007

    Salam Dear Pak Wheelers,
    I have recently bought a 2007 Cultus VXRi with Efi engine, i m facing multiple problems i hope and wish if u guys may help me out, Initially i was facing the problem of sudden RMP drop down on A/c but that problem has been solved due to u guys kind suggestions, now the problem is that my car only give 90/100 miles in local with full time a/c ON, on long route it give 140 to 150, can u guys tell me whats the ideal or average milage of efi cultus + it would be great if someone tells me about any good CNG mechanic in Peshawar.
    i have done the tuning etc everything, but still the problem exists, i m also facing the problem with the pick of the car

    waiting for ur kind suggestions


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    plus in the morning when i start the car it emits light blue kinda smoke for 2, 3 seconds, also if i start the car after 5 to 6 hours

    please brother help

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    Default

    blue smoke would be valve seals most probably
    for mileage you would have to go to 3S dealer ship or any cng workshop which has hand held device to configure stepper motor
    also ask them to check advancer/plugs/air filter
    Life is short and very unpredictable just like a Quarter mile .....

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    Thank u dear for ur response, your are right about the Blue smoke issue yesterday i talked to a mechanic and he said that it is because of the valve seals issue and he said that he will have to remove the head and in most of the cases the valves also need to be changed , brother what could be the harmful effects if i leave this blue smoke issue till winter, bcoz the engine oil level is O.k, plus how much it will cost me?
    , and today on friday i visted a CNG workshop and advancer ,plugs and filter tuning was done, he said that check it for 2 to 3 days and if there is some problem then comeback to me, i havent yet tried the computerized tuning but most of people are not satisfied with it....what do u say

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    first of all, check its compression, if compression is weak then go for head repair. second, how does you drive it? sudden excelration or normal?? also chech the air blockage of intake. if it is more open then adjust it.

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    air blockage was adjusted during my last visit to the cng workshop, well i change gears at when the rmp is at 3000, like 2nd gear at 10 to 15, 3rd at 30 to 35, 4th at 50 to 60 and 4th at 80 kmph

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    Default

    in this case, it should give 130 to 160 in city (normal traffic condition) and above 190 at high way with full loadas my cultus gives.

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    but it is not giving the desireable mileage u have mentioned, what should i do, i need an expert advice, please helppppppppppppppppp any one, i will be indebted to you all me life ..........

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    bhai: yr ap ak kam kro, kuch arsa pehly mere bhe ye hi problm the. 1 mechanic ne setting cher din the jis se mere cultus bhe good mileage ni deti the. ap jo intake ke blockage hoti ha usually wo half half block hoti ha, ap usy half se zada blok kro but tape se ni blky kisi solid chez sy jesy aluminum ke foil hoti ha. phr gas ko kam kr do. jo nut hota ha gas pipe ke opr usy tight kr ke. itni kam kro ke car 100 ya 110 se opr na jy but us ki pic main koi frq na pry. aur padle pres krny py mising bhe na kry.
    ye kam kr ke mjy btao ke average increase hoi ya ni. phr next main btoan ga ke kya krna ha.

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    ok. brother thanx a lot

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    100 miles of local driving in one CNG cylinder is a good mileage with 100% A/C on!
    "The more we sweat in peace, the less we bleed in war"

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    if thats the case then i m pretty much satisfied speedster, thanx

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    Default

    @Yasirraza

    140-150Milies are enough.
    140-150 ,miles mean 225 kms.thats great avarage.Congratulations your cultus is more economical than other cars.lol

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    I have an EFI cultus 2008...gives around 200kms within city with full A/C on and around 215-220km without A/C...gives around 250 kms on highway without A/C..but last week i went to lahore...got the gas filled from a gas station and it gave me 150 kms on highway with that pathetic gas...so may be your gas station has a bad quality gas with low pressure.

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    lucky man i didnt meant miles yaar, full tank mein 100 km deti hai with full time A/C on,
    @Fawad Aslam: i do agree with ur point of view, but i have filled CNG from different stations but results are almost same, last time on motor way it gave 160 km

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    @yasir: 100 km with A/C is way low..if this is VXRi (EFI car) it should give you double (i.e 200 kms) with A/C. Get its CNG system checked..something is wrong, may be emulator/advancer is not working properly (just an idea...)

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    yes i m intending to get it checked on sunday, then i will let u know, at the moment i m quite frustrated

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    can anyone tell me about a good CNG mechanic at Peshawar ........?

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    @ Fawad: should i go for the computerized tuning of CNG, what do u suggest?

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    Quote Originally Posted by yasiraza1185 View Post
    @ Fawad: should i go for the computerized tuning of CNG, what do u suggest?
    No experience of computerized CNG tuning bro...so can't suggest anything...

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