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Mk3 - How Do I Disconnect A Tddi Injector ?


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#1 jaygee82

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Posted 24 May 2011 - 03:43 PM

hi everyone,

my mondeo is making a mysterious sound and i have decided it may be an injector.

all the info i have read tells me to disconnect the wires off the culprit injector to try eliminate the noise.

however, as far as i can see my injectors dont have wiring ? just a brass pipe coming from the upped fuel pump.

im very confused, how do they know when to fire if they dont have a wire ? there must be a electrical connection somewhere but i have stared and scratched my head for hours now.

please help !

p.s. 90hp TDDI - belt tensioner done and camshaft pulley investiaged - not the noise, DMF - no noise yet, pretty sure its injector.

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#2 mintalkin

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Posted 25 May 2011 - 02:57 PM

you will not find any wires on the injector system on a TDDI,it uses a injector pump which injects the fuel and is timed from the timing belt

its the TDCI which has the wires because its a common rail system where the fuel rail is at pressure and the ecu decides when to fire the injector.

#3 jaygee82

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Posted 26 May 2011 - 04:53 AM

you will not find any wires on the injector system on a TDDI,it uses a injector pump which injects the fuel and is timed from the timing belt

its the TDCI which has the wires because its a common rail system where the fuel rail is at pressure and the ecu decides when to fire the injector.


ah thanks that makes perfect sense !

so remove an injector just involves taking the feed pipe off the back and !Removed! it out ?

#4 mintalkin

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Posted 26 May 2011 - 12:58 PM

beware of any fuel pressure that may be in the pipe, undo slowly.


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