engine vibration 502 mag 27 powerquest
07-13-2005, 08:35 AM
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engine vibration 502 mag 27 powerquest
i have a 27 powerquest with a 502 mpi w/silent choice
when im cruising the boat has two different noises it runs smooth then gets a more dronning noise and keeps
going through this cycle the tach stays the same
this happens at fast and slow speeds is this related to the silent choice? it seems like its coming from the exhaust
when it runs smooth it seems the water is flowing through
the exhaust good then when it starts to drone it seems
like the exhaust is restricted
anybody else notice somthing like this
when im cruising the boat has two different noises it runs smooth then gets a more dronning noise and keeps
going through this cycle the tach stays the same
this happens at fast and slow speeds is this related to the silent choice? it seems like its coming from the exhaust
when it runs smooth it seems the water is flowing through
the exhaust good then when it starts to drone it seems
like the exhaust is restricted
anybody else notice somthing like this
07-13-2005, 09:56 AM
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Re: engine vibration 502 mag 27 powerquest
Is the noises only there when runnung through closed exhaust (silent mode) and not there when the exhaust is open???? Possible bad gimbal bearing??? Need more detail... 
