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Thread: Weird vitz engine

  1. #1
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    Default Weird vitz engine

    I have a 2002 1000cc vitz (CNG Fitted) , from past few months i am facing weird problem in it,

    My car runs perfectly fine on CNG but its missing on petrol,
    i could hardly drive on petrol as the car vibrates alot and therz alot of missing in it, but on CNG it is fine.

    I got its fuel filter cleaned last week, that day the car was running fine on petrol but the very next day it started missing again.'

    I am very confused about it, if anyone of you could help me out with it.


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    Default

    Get fuel pump pressure checked.Most probably it needs replacement
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    i'v installed a new fuel pump, but still missing is there, though it is not as bad as it was before but stil it is there

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    Default

    btw how do we check a fuel pump's pressure

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    Default

    get fuel lines and fuel tank cleared may b impurities in petrol has clogged the lines filter and pump
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    my friend, may be your fuel injectors is chocked. chk ur car injecters

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    i have checked injectors aswel by unplugging them one by one,
    all injectors are working fine,

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    Default

    clogged fuel injectors
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    as i said before, iv checked all the injectors, all of them are working,

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    remove battery terminal both for 5 min then install back and start your car on petrol if car becomes normal then there would be a ecu problem or your emulator might be faulty but first try this to remove terminal i hope your car will get normal for that time

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    buddy then i think You should better refill your tank from a better Fuel station
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    Default

    Check fuel filter. Maybe it's choked. Get it replaced.

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    Replace completer fuel pump housing including filter with new one not qabli if doesnt work get the injecters changed both thing should be new no qabli

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    As you are in islamabad get it checkd by arshad electrician in chah sultan

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    Default

    Quote Originally Posted by zamalik255 View Post
    I have a 2002 1000cc vitz (CNG Fitted) , from past few months i am facing weird problem in it,

    My car runs perfectly fine on CNG but its missing on petrol,
    i could hardly drive on petrol as the car vibrates alot and therz alot of missing in it, but on CNG it is fine.

    I got its fuel filter cleaned last week, that day the car was running fine on petrol but the very next day it started missing again.'

    I am very confused about it, if anyone of you could help me out with it.
    Dont worry. The thing is when you get your car tuned it is tuned perfectly on CNG. You have to compromise on the performance of your car on petrol. If you now plan to run your car on petrol get it tuned on petrol but then CNG will suffer. Everything will be adjusted according to your fuel choice. This is the reason for not installing a CNG if Honda/Toyota say that this car is meant to run only on petrol. These problems are a part of the game and the trick is just stick to one of the fuel types.

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    Default

    Welcome ur car from my side to Pakistan
    I think u r running ur car only on CNG for long time & use petrol 4 starting up only. isn't it?
    It happens to evry 2nd car. The amount we save by using CNG is then given to mechanic to correct it on petrol. Hisaab brabar. We should run the car for 5-10 kms on petrol after every cylinder of CNG. Even CNG kit makers recommend it.
    Remedy
    - Check ur car by removing/bypassing the advancer/emulator. If that doesn't solve the prob, continue reading
    - Get a tub & place it under ur fuel tank, remove the drain bolt under fuel tank & keep moving the car a bit, so that all petrol is drained.
    - inspect the petrol for any residues/impurities.
    - if impurities found then take ur petrol tank out & clean/wash it thoroughly.
    - Gift the petrol u took out to some motorcycle wala or any person u hate
    - don't put it back in tank even it looks clean.
    - Change ur fuel filter
    - get ur tank half filled from a different petrol pump.
    - buy a good injector cleaner & pour it all in the tank.
    - drive ur car on petrol for a day or two.
    - even after all all this ur car doesn't run smooth then get ur injectors cleaned. they must b working but partially clogged.

    Nothing else can b wrong. the above steps will get ur prob solved & for God's sake drive it on petrol for few kms daily.

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