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Thread: khyber's expert please help

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    Default khyber's expert please help

    here is the problem,on low rpm,car jerks,and jerks alot ,if i acclerate slowly.jerks wont happen,but if i try to accelerate a bit quicker,car will jerk and as it gets to higher rpm,around 2000,its all good again..car has no issue of mileage or any other problem . this jerk problem is on CNG but can also be felt on petrol.but on petrol its next to none existent. what ive tried to do to rectify the problem
    1-new spark plugs, ngk japanese black ones.. nothin improved,wasted 750 for nothin,still have old set of wires with me
    2- timing advance seems to have no affect on eliminating the problem,i installed STAP which puts on different timing levels for petrol on cng..ive tried all tuning for cng on my own,no avail
    3-new air filter
    4- mobil oil has been changed recently,approx 1500 kms before

    any ideas?? could it be coil? but if it was coil,missing/jerking should have been there on high rpms too
    please help me out,its makin me nuts...

    REAL men drive manual cars!

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    Default

    anyone?
    just to add plugs are platinum and are factory spec gaped and this problem just strted like month back and plugs were put in about 1.5 year ago
    REAL men drive manual cars!

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    Default

    Change the plug wires to some good quality ones... it maybe due to current problem.
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    Default

    i just changed the plug wires with original NGK japanese wires bro..still problem presists
    REAL men drive manual cars!

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    Default

    Inspect ignition coil resistance and also check the distributor working resistance checks according to the manual.
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    Default

    xulifiqar bhai how to check resistance of ignition of coil?? i am usin alto's coil ..please help
    plus also tell me how to check resistance of distributor? and how to check if distributor's vacuum advance is working??? ive tried to suck air from the diaphragm but nothin moved,i dont know which thing actually is supposed to move in khyber's distributor?
    REAL men drive manual cars!

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    I think you should contact smijaz - he is near you and works on his own car, so ask him and learn from what he does.
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    he is in lahore and i am in rawalpindi
    but thanks,i have his number and ill call him tomorrow inshallah
    REAL men drive manual cars!

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