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Thread: My poor car is acting strangely :-(

  
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    irmscherastra1.8's Avatar
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    My poor car is acting strangely :-(

    Right bare with me on this lol long story, i replaced the coil pack last week on the motor as it was missfiring-all was fine till this afternoon,i finished work & started the car up at 5pm, i was just about to check the oil when i noticed the car missfiring yet again and i noticed a fair bit of thick white smoke coming out of the exhaust anyway i sat in the car and looked at the trip computer which i have on the petrol consumption & it started on 22.5mpg then slowly dropped a mile to the gallon literally every second until it stopped at 10mpg so i drove off home and it raised back up to the 22.5mpg i had before but then when i arrived home and sat there with it idling for a while it started yet again droppin its mpg down again quite rapidly before i turned the engine off! a mate of mine told me to hold my hand up against the tailpipe to see what it smelt of,so i did but it never smelt of fumes/petrol come to think of it it didnt smell off anything! either my car's having a mad 10minutes or theres somthing serioulsy wrong with the car,i dont suppose anyone knows whats going on here???
    Any help appreciated
    Astra Mk4 GSi
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    dannysport18's Avatar
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    have you cleaned the engine of late?
    pull the coil pack out and see if you have oil or water ontop of some of the plugs

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    Okay ill give that a go tomorrow hopefully,i haven't clean the engine at all.i didn't notice any water/oil before when i changed the coil pack last friday.what could explain the strange readings of petrol on the trip comp?
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    dont worry about the trip computer thats not 100% mate
    the oil or water on the plugs would cause a missfire
    did you change the plugs when you fitted a new coil Pack

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    could stab in the dark all week long but my money will be on plugs

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    actually being a tight ass that i am i didnt put any new plugs in when i changed over the new coil pack! so if i buy a set of iridduim sparks that should stop the missfiring? thanks for your help danny
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    No probs
    a new set of plugs should make it run fine again
    the trip computer on my zaffy goes up an down
    dam if i drive hard on my way to work i can get down to 8mpg

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    Cool thanks mate,just ordered a set of plugs so ill give that ago and see what happens
    Astra Mk4 GSi
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