R350 08 misfire codes P0300 P0301 P0302 P0303
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Joined: Jun 2012
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From: Long Island NY
mrcedes R350 2008
R350 08 misfire codes P0300 P0301 P0302 P0303
Hi Im new here, just wonder if anyone can help me with this codes misfire codes P0300 P0301 P0302 P0303. Recently change tension pulley, belt and other 2 pulley and it still making noise at the start but after its run for a wile it stop making this noise, check engine light when on but after I restarted its no more ?? may be it was one of those chip parts from advance auto parts store or may be something else? I would be very appreciated for any ideas before I go to a dealer.
Thanks.
Thanks.
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Joined: Jun 2006
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From: Nova Scotia, Canada
2023 GLK250, 1987 560SL
Most likely the spark plug wires.
Depending on much mileage is on the vehicle, it could be spark plugs or ignition coils also. It's best to start with the spark plug wires. I usually replace the spark plugs at the same time. Check out Rockauto.com - they have great prices on automate iridium plugs.
Depending on much mileage is on the vehicle, it could be spark plugs or ignition coils also. It's best to start with the spark plug wires. I usually replace the spark plugs at the same time. Check out Rockauto.com - they have great prices on automate iridium plugs.
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