truthteller

I;ve got a focus tddi endura -year 2000,got smoke coming from
exhaust(grey) runs a bit rough and theres a kinda knocking seemingly
coming from the top left hand side of the engine,like a valve not
returning properly,i’ve removed and stripped down the head,decoked and
cleaned it all up new valve seals the lot,but the problems still there
:(

my engine management light comes on when i start the car but goes off
straight away,surely this light should come on and stay on if theres a
fault?? any ideas how this management system works,has a fault occured
in the sensors or summat????

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Tim..

"truthteller" <UseLinkToEmail@AutoForumz.com> wrote in message
news:1_620007_f4fe99f56f2f0e33651127a36906210c@autoforumz.com...
> I;ve got a focus tddi endura -year 2000,got smoke coming from
> exhaust(grey) runs a bit rough and theres a kinda knocking seemingly
> coming from the top left hand side of the engine,like a valve not
> returning properly,i've removed and stripped down the head,decoked and
> cleaned it all up new valve seals the lot,but the problems still there
> :(
>
Either you have an EGR fault (most likely) or a AFM problem.

> my engine management light comes on when i start the car but goes off
> straight away,surely this light should come on and stay on if theres a
> fault?? any ideas how this management system works,has a fault occured
> in the sensors or summat????
>

That MIL behaviour is normal, and as far as the ecu is concerned there is no
fault.

Tim.