Vibration in V4 Mode
03-19-2022, 10:46 PM
#1
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Vibration in V4 Mode
2013 GM 5.3l
Significant vibration in V4 mode during light acceleration. No vibration in V8 mode(using gear M5 to disable AFM).
Original owner, ran fine then vibration started and got worse.
Thanks,
Significant vibration in V4 mode during light acceleration. No vibration in V8 mode(using gear M5 to disable AFM).
Original owner, ran fine then vibration started and got worse.
Thanks,
03-20-2022, 10:45 AM
#2
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True Car Nut
Moved from "General GM Chat" to "GMC/Chevrolet Truck/SUV".
03-20-2022, 10:46 AM
#3
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Sounds like a possible compression issue.
How many miles on it?
How many miles on the current spark plugs?
How many miles on it?
How many miles on the current spark plugs?
03-20-2022, 03:47 PM
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03-20-2022, 04:19 PM
#6
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This engine was fine for 30K and now you have a vibration in 4V?
03-20-2022, 04:41 PM
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03-20-2022, 07:40 PM
#10
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Pry on them with a crow bar or similar. A good mount will move a bit but you'll know when you find bad one.
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