thefranksteak
11.06.2021 17:07:23
Re: Symptoms of reed failure ?
See full version: Symptoms of reed failure
Re: Symptoms of reed failure ?
Re: Symptoms of reed failure ?
Since it runs on the seafoam mix, I would suggest that you are having problems "igniting" the charge. You probably do not have a good cylinder seal. Compression is not an accurate measurement on a 2 stroke outboard. The crankcase needs to be compressed by the down-stroke of the piston. Without this "compression" the engine will run like. you guessed it. like it has a bad reed. <br />Fit new pistons & rings & i'd bet my bottom dollar your engine runs like new.
Re: Symptoms of reed failure ? [links]
I have pulled the head. Head gasket looked good, cylinder walls looked good with no major ridge at<br />the top of the bore, no major carbon build up. What else should I be looking for when I pull the head again?<br /><br />Smitty
Re: Symptoms of reed failure ? [links]
With the recent debut of the Mercury 135hp FourStroke outboard, it seems timely to revisit its larger 150hp sibling. Launched more than three years ago now, the big-displacement in-line four-cylinder Mercury four-stroke has proven a huge success – and is now powering all manner of craft around the world – from high performance bass boats to party pontoon craft.
More evidence the Mercury is over-built is in the heavy-duty gearcase – which uses components originally designed for the 300hp Verado, an engine producing twice the power output. more
Servicing costs are also down compared with other four-strokes in this power segment, and this is largely due to the simpler engine configuration – which does not require valve clearance adjustments for example. more
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A synthetic blend 2-Cycle engine oil specifically formulated and developed to meet the needs of: OptiMax and Direct Fuel Injected (DFI) 2-cycle outboard engines. - Provides the maximum protection for OptiMax and DFI engines even under the most extreme operating conditions. - Outperforms other oils by combining a carefully modified base stock blend with a synthetic additive package. - Minimizes carbon build-up to help maintain engine top end speed and acceleration. - Superior lubrication for increased resistance to piston scuffing. - Will mix with typical 2-cycle engine oils. - Provides warranty protection for Mercury and Mariner OptiMax and DFI outboards. Available container sizes: Pint, Quart, Gallon, 2.5 Gallon, 55 Gallon more