W211 AMG Discuss the W211 AMG's such as the E55 and the E63
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Misfires and timing retard

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Old 09-03-2015, 05:15 PM
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Cls63 & C32
Misfires and timing retard

Need some thoughts about what can cause misfires on same bank with timing retards to 4 and 0 on full boost only, car running well cruising and idling only on full boost wot, sometimes it made like small hesitation without error codes and sometimes hesitation are bigger and misfires are triggered,
checked: plugs, wires, coils, fuel system, o2, cam sensor, timing chain, boost sensor.
Old 09-03-2015, 08:04 PM
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04 E55 AMG
Have you done a compression test?
Old 09-04-2015, 04:54 AM
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Yes also checked, all pistons at same psi.
Old 09-04-2015, 08:48 AM
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One of the catalysts on that bank might be plugged up.
Old 09-04-2015, 01:56 PM
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Not cats on the car
Old 09-04-2015, 02:24 PM
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Leakdown test?

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