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C 250 pistone hole

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Old 06-16-2016 | 12:04 PM
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aelkahky's Avatar
aelkahky
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C 250 (2010)
Question C 250 pistone hole
My C250 2010, had a hole in the middle of one of the pistons, I was told by the MB agent, that is was caused by a leaking injector??, is it true or it is a low octane problem.
Any help??
Last edited by aelkahky; 06-16-2016 at 12:07 PM.
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Old 06-16-2016 | 01:04 PM
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cvx5832
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325Ci, 325Cic, C300
Originally Posted by aelkahky
My C250 2010, had a hole in the middle of one of the pistons, I was told by the MB agent, that is was caused by a leaking injector??, is it true or it is a low octane problem.
Any help??
Depends, did you use low octane fuel?
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Old 06-16-2016 | 01:46 PM
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aelkahky
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C 250 (2010)
A 92 octane
Originally Posted by cvx5832
Depends, did you use low octane fuel?
A 92 octane
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Old 06-16-2016 | 02:17 PM
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cvx5832
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Originally Posted by aelkahky
A 92 octane
If you're using 92, why would you or your mechanic suspect a low octane problem?
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Old 06-16-2016 | 03:03 PM
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2013 C250 Sport
Originally Posted by cvx5832
If you're using 92, why would you or your mechanic suspect a low octane problem?
Used car purchase? You never know what a PO did.
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Old 06-16-2016 | 03:51 PM
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cvx5832
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Originally Posted by michail71
Used car purchase? You never know what a PO did.
Possible, but he doesn't say, and we can only go by what he tells us.

By that logic we may as well assume the hole in the piston was from the factory because of something the engine builder may have done.
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Old 06-16-2016 | 06:36 PM
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C 250 (2010)
Originally Posted by cvx5832
If you're using 92, why would you or your mechanic suspect a low octane problem?
They say mostly it was less than 92 octane.
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