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Engine sounds rougher than usual at 31 mph and above
Posted: Wed Nov 18, 2020 1:30 am
by 150pcxer
I realized that when at 31 mph and above, the engine sounds rougher and/or louder than usual.
I had the engine oil changed at roughly 1000 km prior to this phenomenon happening.
What are some of the possible causes?
Re: Engine sounds rougher than usual at 31 mph and above
Posted: Wed Nov 18, 2020 10:36 am
by Mel46
First make sure you haven't lost any oil.
Next, check your spark plug. How many miles on it? Gap ok?... etc.
When was its last tune up? (Valves, rollers, belt, etc).
Clean the throttle body or put some additive like Seafoam in your gas.
Any one of those things can affect acceleration
Re: Engine sounds rougher than usual at 31 mph and above
Posted: Wed Nov 18, 2020 5:25 pm
by Old Grinner
Next, check your spark plug.
Good point Mel.
I've actually seen spark plugs loosen up over time if they weren't installed properly.
Re: Engine sounds rougher than usual at 31 mph and above
Posted: Thu Nov 19, 2020 2:44 am
by you you
Check your exhaust isn't coming loose. Expecially the exhaust port end.