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Mondeo Engine Rattle


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#1 chrismar

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  • Name: chris
  • Ford Model: mondeo
  • Year: 2004
  • Location: Durham

Posted 16 August 2011 - 07:58 PM

hi im looking for some advice i have a 54 plate mondeo tdci 115 bhp, since buying the car few months back it has always sounded like a old escort with a over head valve engine rattling away quite noticeable tappet rattle. now not been totaly none mechanical i know that the engine is twin over head cam with hydraulic rockers so would be pretty hard for them too rattle or am i mistaken, since owning the bottom pully has been changed and a full clutch kit and flywheel has been fitted. couldi be mistaking my rattle as tappet rattle but it be coming from else where on the engine i have noticed a lot of people saying chaning the aux drive belt quitened there engine but would wonder how in that system would give a tapping sound through out the engine any advice greatly apprciated..... as a last note or more fear could it be the timing chain wearing and stretching causeing the rattle....

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#2 mintalkin

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  • Name: mintalkin
  • Ford Model: mondeo tdci 130
  • Year: 2006
  • Location: Staffordshire

Posted 17 August 2011 - 03:05 PM

what you are hearing could be injector knock, the injectors on the tdci can loose there codes and may need recoding or you could try a good injector cleaner treatment in the fuel tank.

#3 chrismar

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Posted 20 August 2011 - 06:07 PM

hi could you recommend a good injector cleaner ive tried redex and millers diesel eco max too no avail would wynn's hydraulic valve stuff stand a chance and could a good mechanic tell the difference between injector knock and tappet rattle or is there a easy way to spot injector knock...

#4 mintalkin

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Posted 20 August 2011 - 07:39 PM

i would start with a good cleaner, there are plenty around as you have found here are two of the best
http://www.ebay.co.u...=item2eb7351fe5
http://www.ebay.co.u...=item3f0d1cbe82
a good mech should be able to tell the difference with the right tools.

#5 mikeamapola

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  • Name: Michael
  • Ford Model: Mondeo TDCI
  • Year: 2003
  • Location: Devon

Posted 21 November 2011 - 10:55 PM

Would switching to the premium grade fuel help ? Thinking of doing it as I have same prob.
Mike

#6 jongary

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  • Ford Model: Mondeo ST tdci
  • Year: 2007
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Posted 23 November 2011 - 09:12 PM

Hi, I'm not a mechanic but if you shine a torch at the aux belt tensioner and look at the right angle you will see the belt tensile pulley bouncing up and down. Mine does the Sam and has done for over a year. Research says it needs a complete aux belt kit, tensioner, and pulleys. I believe gates do a kit.

#7 jongary

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Posted 23 November 2011 - 09:25 PM

Hi, I'm not a mechanic but if you shine a torch at the aux belt tensioner and look at the right angle you will see the belt tensile pulley bouncing up and down. Mine does the Sam and has done for over a year. Research says it needs a complete aux belt kit, tensioner, and pulleys. I believe gates do a kit.

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