View Full Version : Idle to fast, running bad

08-26-2019, 04:28 AM
Hi all
i have a 90hp 4 stroke with carbs x4
Was running perfect then end of last year started running rough at low revs but fine at high revs,
had carbs sonic cleaned and since then it runs rough still, won't rev through to high revs, miss fires when Reving and the idle I can't get below 1000 rpm.
Also I get nothing out of number one cylinder unless I wind the mixture screw out 5 turns.

Any advise or things to try would be really appreciated