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Ford Fiesta 1.25 Zetec S 2000 Reg Misfire Problems

tmzy
tmzy
in Ford Fiesta Club

Featured Replies

hi my friend has this fiesta which missfires on idle and low revs mainly. i told him to change the plugs and leads in that order. lol cheapest first. but still missfires. but it has improved it. i told him the next step is replace the coil pack but he wants to know if there is anything else that might cause it. as i dont own a fiesta i dont know if it is a common problem on them.

thanks in advance

tommy

  • Quote

    • Solved by mick85

    Go to solution


    It could be the idle control valve if its idling uneven.

    Sent from my HUAWEI Ascend P2 using Ford OC mobile app

  • Quote
    • Author

    it idles fine. only when it missfires. the miss fire is not continuous on idle. it used to before we changed plugs and leads

  • Quote
    • Solution

    Could be injectors I would test coil pack with multimeter and do possibly do compression test before spending to much

    Sent from my iPhone using Ford OC

  • Quote
    • Author

    ok i will see if my friend has a multimeter to test coil pack. didnt think of that. will get back to you

  • Quote

    TB sticking? it is something that never ever gets cleaned, might just want a grease on moving parts and filled with carb cleaner to clean it out.

  • Quote
    • Author

    have put a multimeter on the coil pack. it was the coil pack causing the missfire. have replaced it now its running fine again thanks alot

  • Quote

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    The "Digestive"

    • The Digestive Forum Roundup (31st May - 7th June 2026)

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