C63 AMG (W204) 2008 - 2015

can a bad intake camshaft adjuster cause pinging?

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Old 12-18-2013, 01:34 AM
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can a bad intake camshaft adjuster cause pinging?

a question for those with engine knowledge. I just had my intake cam adjuster replaced, and seems like my engine pinging has gone away. coincidence?
Old 12-18-2013, 02:42 AM
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Car has knock sensors. It would retard timing to avoid ping.

Unless you have a tune that has limited the ecms ability to retard the timing.

If the adjuster wasn't advancing the intake cam when it's supposed to, that would increase the compression as the valve would close earlier. It's called dynamic compression ratio. The higher compression could cause pinging.
Old 12-18-2013, 02:58 AM
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Originally Posted by Merc63
Car has knock sensors. It would retard timing to avoid ping.

Unless you have a tune that has limited the ecms ability to retard the timing.

If the adjuster wasn't advancing the intake cam when it's supposed to, that would increase the compression as the valve would close earlier. It's called dynamic compression ratio. The higher compression could cause pinging.
What he said
Old 12-18-2013, 12:05 PM
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thx guys.
Old 12-19-2013, 09:49 AM
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Originally Posted by m a x i m u s
a question for those with engine knowledge. I just had my intake cam adjuster replaced, and seems like my engine pinging has gone away. coincidence?
maximus, what led you to figure out you needed to change your intake camshaft adjuster?
Old 12-19-2013, 12:07 PM
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Originally Posted by rmt52
maximus, what led you to figure out you needed to change your intake camshaft adjuster?
very gnarly rattle from the engine bay on cold start up.
Old 06-12-2014, 03:12 PM
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Last edited by m a x i m u s; 06-12-2014 at 10:53 PM.

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