Fuelling on cold start
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Thread: Fuelling on cold start

  1. #1

    Default Fuelling on cold start

    Hi
    I`m a new recruit, having just purchased a very nice ZT260SE, with a very good history in mint condition, and I`m picking it up at the beginning of May.
    The supplying dealer has warned against stopping the engine straight after a cold start and trying to re-start immediately (something I`d always try and avoid anyway as it`s not good for an engine to not reach operating temperature), as it`s apparently hard to start again straight away. I remember a similar issue on a Golf 1,8T, which I took to be the management system preventing it to protect the catalyst. Leaving 20 mins and trying again would then start it.
    I wondered if anyone had experienced a similar issue. If it`s normal, then I`ll just try and avoid it and live with it, and try and not stall from a cold start!
    Thanks
    Rich Parker

  2. #2
    Join Date
    May 2006
    Location
    Surrey, United Kingdom.
    Posts
    7,683

    Default

    Welcome along Richard. Never heard of that one. Sometimes difficult to start when the engine is hot, high underbonnet temps, vapour in the fuel rails but various solutions available. Engines are pretty bullet proof and lots of info on the Mustang 2V 4.6 SOHC.
    Get your questionnaire back to Tim to get full membership. Lots to read. What are the last three digits of your VIN?

    Nich.
    Nicholas John Peter Tinker - #484


  3. #3
    Join Date
    Jan 2016
    Location
    Witney Oxfordshire
    Posts
    786

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    Mine would do that is I moved it off the drive to let somebody out and yes it could be a difficult to restart sometimes, a new set of Iridium spark plugs and a set of MSD ignition coils seems to have fixed it.

    If a car is difficult to start with modern EFI there is usually a problem, the usual culprits are a weak spark, dribbly injector or injectors, air leak or in some cases a poor starting technique. A lot of people don't know but flooring the throttle when you try to start a fuel injected car often switches the injectors off, this is so you can clear a flooded engine.

    Steve

  4. #4
    Join Date
    May 2009
    Location
    Evesham UK
    Posts
    952

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    Quote Originally Posted by SCP440 View Post
    A lot of people don't know but flooring the throttle when you try to start a fuel injected car often switches the injectors off, this is so you can clear a flooded engine.

    Steve
    Is this true for our engines? If it is it would be a remedy for an occasional problem for me.
    Bernard Lovegrove. Rural Worcestershire.
    www.midlandsnanomeets.co.uk/ to find out about the nanomeets we run to work on our cars.

  5. #5
    Join Date
    May 2006
    Location
    Llanelli, , United Kingdom.
    Posts
    794

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    The stratergy for the Ford EEC v management does indicate if the throttle is floored when trying to start it shuts off the injectors to assist in clearing a flooded engine.
    WNJ516William Nigel Jenkins.

  6. #6
    Join Date
    May 2009
    Location
    Evesham UK
    Posts
    952

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    Thank you for that, I will try it next time I have the problem.
    Bernard Lovegrove. Rural Worcestershire.
    www.midlandsnanomeets.co.uk/ to find out about the nanomeets we run to work on our cars.

  7. #7
    Join Date
    Jan 2016
    Location
    Witney Oxfordshire
    Posts
    786

    Default

    I found this out because one of my customers had a car he claimed would be difficult to start what ever he did. I would go out to it and it would start so quickly I could not even hear the starter motor. After several call outs I got him to show me his starting technique, he put his foot to the floor and turned the key, when I asked why he did this he answered well how else would it start with no choke .

    I showed him it would start foot off and he was amazed.

    Steve

  8. #8

    Default

    Thanks Guys, much appreciated. Yes, the dealer did say the way, out if it happened, was to floor the throttle and crank it over, so that makes sense. Engine seems in excellent health (40K miles with FSH). Just had new plugs, so that might help; I might upgrade to Iridium / MSD coils. Rich

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