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any one had hole/crack in piston probs with 2.2 mk7.??

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any one had hole/crack in piston probs with 2.2 mk7.??

Postby psv-hgv-flt » Thu Feb 23, 2012 7:22 pm

any one had hole/crack in piston probs with 2.2 mk7.?? 130 ps.
:?: :?:
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Re: any one had hole/crack in piston probs with 2.2 mk7.??

Postby ake » Thu Feb 23, 2012 7:32 pm

Lots, caused by overfueling injectors, usually because they need a pump/ pilot learn on IDS but people won't take it to the Ford dealers
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Re: any one had hole/crack in piston probs with 2.2 mk7.??

Postby dieseldel » Thu Feb 23, 2012 7:41 pm

hi
yep done lots of these now, infact its the most common form of failure, or it is on the ones i have repaired, common knowledge that over-fuelling caused by knackered injector causes these failures, or at least its common knowledge on this forum but i cant say i am convinced its injectors failing causing it, when i have had customer check out injectors (at great expence) they usually check out ok !!! my view is that the pistons arent up to the job, to make engines more efficient the pistons have been lightened and under heavy load they just crack, burning then follows the crack and burns a hole in piston, hole usually exits on oil control ring and burns pocket in block, also heavy scoring of cylinder wall , bore, sleeve and bore back to standard is my method of repair, its a bit like a production line in my place at the moment doing 2.2s and 2.4 tdci,s ----------------love em
it was like that before i touched it !!
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Re: any one had hole/crack in piston probs with 2.2 mk7.??

Postby psv-hgv-flt » Thu Feb 23, 2012 8:14 pm

dieseldel wrote:hi
yep done lots of these now, infact its the most common form of failure, or it is on the ones i have repaired, common knowledge that over-fuelling caused by knackered injector causes these failures, or at least its common knowledge on this forum but i cant say i am convinced its injectors failing causing it, when i have had customer check out injectors (at great expence) they usually check out ok !!! my view is that the pistons arent up to the job, to make engines more efficient the pistons have been lightened and under heavy load they just crack, burning then follows the crack and burns a hole in piston, hole usually exits on oil control ring and burns pocket in block, also heavy scoring of cylinder wall , bore, sleeve and bore back to standard is my method of repair, its a bit like a production line in my place at the moment doing 2.2s and 2.4 tdci,s ----------------love em



hmmmm, sounds a big £££££ job then. :roll:
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Re: any one had hole/crack in piston probs with 2.2 mk7.??

Postby ake » Thu Feb 23, 2012 8:55 pm

dieseldel wrote:hi
yep done lots of these now, infact its the most common form of failure, or it is on the ones i have repaired, common knowledge that over-fuelling caused by knackered injector causes these failures, or at least its common knowledge on this forum but i cant say i am convinced its injectors failing causing it, when i have had customer check out injectors (at great expence) they usually check out ok !!! my view is that the pistons arent up to the job, to make engines more efficient the pistons have been lightened and under heavy load they just crack, burning then follows the crack and burns a hole in piston, hole usually exits on oil control ring and burns pocket in block, also heavy scoring of cylinder wall , bore, sleeve and bore back to standard is my method of repair, its a bit like a production line in my place at the moment doing 2.2s and 2.4 tdci,s ----------------love em

Its not the injectors themselves, but the calibration in the ecu which causes the overfuelling
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Re: any one had hole/crack in piston probs with 2.2 mk7.??

Postby kulataz » Thu Feb 23, 2012 11:06 pm

yes mine did the same thing. No2 piston usually I am told. ford must know about it cos their short motor has drastically reduced in price so they must be aware. It cost me £2.5K to fix mine yet it now runs worse than before. Mine is now down on power, hesitates a stutters and in 4th between 30-40mph it starts to kangaroo. I hate it right now.

G

PS anyone want a spare 2.2 block...lol
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Re: any one had hole/crack in piston probs with 2.2 mk7.??

Postby cossie7 » Wed Jun 20, 2012 8:12 am

I'll have the spare block lol
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Re: any one had hole/crack in piston probs with 2.2 mk7.??

Postby Les111ROC » Wed Jun 20, 2012 10:37 pm

ake wrote:Lots, caused by overfueling injectors, usually because they need a pump/ pilot learn on IDS but people won't take it to the Ford dealers


Mine had pump learn & stock map installed shortly before piston died :(
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Re: any one had hole/crack in piston probs with 2.2 mk7.??

Postby ake » Thu Jun 21, 2012 7:08 am

Les111ROC wrote:
ake wrote:Lots, caused by overfueling injectors, usually because they need a pump/ pilot learn on IDS but people won't take it to the Ford dealers


Mine had pump learn & stock map installed shortly before piston died :(

Damage may have already been done though :(
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Re: any one had hole/crack in piston probs with 2.2 mk7.??

Postby Tdci_boy » Thu Jun 21, 2012 10:55 am

My 2007 2.2 130ps had the exact same thing about a year ago :-( wish I had known this was an issue, I would have really ripped into my local dealer & investigated further, I just accepted it as one of those unfortunate things & martynx fitted an almost new 2009 140 with it's 6 speed box, chuffed to bits with it but now I'm bloody well annoyed :-(
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Re: any one had hole/crack in piston probs with 2.2 mk7.??

Postby martynx » Fri Jun 22, 2012 9:02 pm

Les111ROC wrote:
ake wrote:Lots, caused by overfueling injectors, usually because they need a pump/ pilot learn on IDS but people won't take it to the Ford dealers


Mine had pump learn & stock map installed shortly before piston died :(


Yours died Les :!: :!: :?: :?: ? thats rough :( did you get to the bottom of that knocking noise prior :?:
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Re: any one had hole/crack in piston probs with 2.2 mk7.??

Postby Les111ROC » Sat Jun 23, 2012 5:25 pm

martynx wrote:
Les111ROC wrote:
ake wrote:Lots, caused by overfueling injectors, usually because they need a pump/ pilot learn on IDS but people won't take it to the Ford dealers


Mine had pump learn & stock map installed shortly before piston died :(


Yours died Les :!: :!: :?: :?: ? thats rough :( did you get to the bottom of that knocking noise prior :?:


Yes as you correctly diagnosed it was crank pulley nackered.
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Re: any one had hole/crack in piston probs with 2.2 mk7.??

Postby ovlov » Sun Jun 24, 2012 9:00 pm

ake wrote:Lots, caused by overfueling injectors, usually because they need a pump/ pilot learn on IDS but people won't take it to the Ford dealers


How do you no that they may need this doing :?:
I'm thinking of changing my mk6 for a mk7 110ps just want to no what to look for :?
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