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Thread: why my car smokes?

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    Default why my car smokes?

    i ve gota civic 97 vti.the engine seems to be in very good condition no noise or performance problem good pick and evry thing.but i have one problem. a jet of smoke comes out of the exhaust.wheen i race the engine.cng is also fitted is this due to the cng.or the car just needs simple tunning.i have aslo uploded the video it will come soon.plz tell i am very much worried.how much will the honda people will charge me for the tunning.i have recntly changed the engine oil.does the engine require washing.pzl tell

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    Past cant be brought back ..but future can be made even better than the Past..if one wants to.. ....

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    Default

    by the way can any body tell me where is the servis center of haonda in Faisalabad.is at the same place of the honda showroom.
    Past cant be brought back ..but future can be made even better than the Past..if one wants to.. ....

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    Default

    is this happening after oil change, have u changed the oil brand this time?

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    Default

    hello!
    what type of smoke does ur car releases...black smoke or white smoke....and its happening all time....check after 1 week that wheather your engine is drinking oil or not....check that how much oil does ur engine drink in one month.....as u say CNG is installed...possibility of bad Piston rings.....just check that all and tell
    Thanxx

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    Default

    it was happening before thats why i changed the oil. shell hilux yellow packing one.
    Past cant be brought back ..but future can be made even better than the Past..if one wants to.. ....

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    Default

    what if the bad piston rings how much it will cost me to repir them.its mixed color greyish white
    Past cant be brought back ..but future can be made even better than the Past..if one wants to.. ....

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    Default

    hello any responce
    Past cant be brought back ..but future can be made even better than the Past..if one wants to.. ....

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    Default

    well, rings cannot be repaired u have to get new ones for pistons if needed. but first tell us do u observe smoke on CNG as well as on petrol.

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    Default

    i observe smoke on both.but on petrol its of darker color.not that much.on low rpm there is no smoke but as i race it smoke comes out.how much the rings will cost me.do weak pistons have any effect on pick performace any thing. the car runs awsome and good.just smoke probe.
    Past cant be brought back ..but future can be made even better than the Past..if one wants to.. ....

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    Default

    i suggest a compression test, else visit a computerised CNG tunning center, he'll let u know a rough idea about the status of cylinders, if u find something fishy there then must perform compression test. its better u do things quickly as time passes by, u might have to do a complete overhaul. but remember the first step, check tunning and status of plug wires, plugs as there might be incomplete combustion issue. get computerised tunning done for ur vehicle.

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    Default

    here is pic it was on cng
    why my car smokes? -620085
    Past cant be brought back ..but future can be made even better than the Past..if one wants to.. ....

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    Default

    i am afriad, ur veh has worn out piston rings. anyhow, get a compression test for ur car.

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    Default

    how much the piston rings will cost.plz tell.
    Past cant be brought back ..but future can be made even better than the Past..if one wants to.. ....

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    Default

    not sure about the cost, but roughly not more than Rs. 5000/- inclusive of the cost of labour.
    maybe some other person can give u a better idea.

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    Default

    can any body tell me the exact cost of new piston rings including fitting charges.
    and
    how much it will cost me for computerized tunning of my car.
    Past cant be brought back ..but future can be made even better than the Past..if one wants to.. ....

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    Default

    helllo no reply guys.where have the experts gone
    Past cant be brought back ..but future can be made even better than the Past..if one wants to.. ....

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    Well I agree with Robin about piston being worn out, but does not seem to be very bad. I am sorry I do not have any idea regarding the cost of over haul but before you do so try this. Compression test is the way to go, but from the looks of the smoke you have sometime before you need to do a overhaul. In the mean time my recommendation is to use a thicker oil, eg Castrol GTX 20-50. Coz' Shell Helix Yellow is thinner. BTW, CNG does dry up the valves and so to lubricate the valves do this. After every two cng fillups run the engine on petrol for 10-20 kms and drive the car at low speeds this will cause some carbon build up in the engine and lubrication for the valves (Cng is a very lean running fuel and causes almost no carbon build up.)
    Good Luck
    AH
    "The value of life can be measured by how many times your soul has been deeply stirred." Soichiro Honda

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    Default

    hmmm.....
    i gues.. u mite need to change pistons as well coz u r running ur car on cng ...
    when cng burns it leaves high amount of carbon residue on the piston's surface...
    so i gues.. if u r plannin to keep it on cng go for a complete engine overhaul.....
    it will include changing of piston n rings... grinding of cam n cranks... grinding of piston sleeves n changin of inlet values......
    n yea.... these all things will be done in the worst case scenerio..... perhaps ur engine doesnt need to have its sleeves or crankshaft grinded....

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    Default

    here are some more smoking pics
    why my car smokes? -620091


    why my car smokes? -620092
    Past cant be brought back ..but future can be made even better than the Past..if one wants to.. ....

  20. #20
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    Default

    if the pistons are in bad condition so why the engine performs well. jsut came from lahore yesterday at 130 to 140 kms per hour non stop.so why the engine performs that well when it has that much bad problem.i dont understand why.how much it will cost me.any estimates bcoz it my first honda.i know nothing about it.
    Past cant be brought back ..but future can be made even better than the Past..if one wants to.. ....

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