MERCURY pROBLEM

C

capt

New Member
[FONT=Monaco, Courier New]We own a 1982 doral with a 1982 70 hp merc still running well. However at medium rev(around 15-30mph) sometimes the motor will rev down a bit than back up cycling like that for a while.However when we slow down the problem stops. This has been happening since 2009.The motor has had a "starting component" replaced and has been serviced every year. If you could suggest anything it would be a big help
Thanks Alex
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Chris

Chris

Administrator
Staff member
It sounds like it's "hunting".

It is most likely starved for fuel in some way.

-Chris
 
nathan

nathan

Active Member
I would say fuel pump. may have small hole in the diapham so it can't keep up. or fuel filter.
 
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