Merc 90 2 stroke starts then stalls... over and over and over

kmagnuss

Petty Officer 3rd Class
Joined
Nov 4, 2012
Messages
94
Re: Merc 90 2 stroke starts then stalls... over and over and over

double tap
 

oldman570

Lieutenant Commander
Joined
Mar 25, 2011
Messages
1,615
Re: Merc 90 2 stroke starts then stalls... over and over and over

It very well could run at higher RPMs as now the pump is puting more fuel into the carbs at a higher pressure and if the carbs wre adjusted before the pump was rebuilt, the idle screws are not setfor that change. You will have to readjust them to get the idle setting back to where it is right. JMO
Oldman570
 

kmagnuss

Petty Officer 3rd Class
Joined
Nov 4, 2012
Messages
94
Re: Merc 90 2 stroke starts then stalls... over and over and over

Well took it out again last night... idled on the dock for about 10 minutes... then ran up the no wake zone and I kid you not it died at the same spot. Decided to try to start it while getting pulled back to the dock and it was starting a little easier than it was the last couple times it died on me... but it wouldn't idle very good. So I kept the rpms' around 3k for a minute or two, then it was idling just fine. So we unhooked the rope and I plowed around for a few minutes.... had to restart it once... and then it ran fine. Did a wide open run for 3-4 minutes and everything seemed to be actually running better than it ever has.
After we fished for an hour or so I started it back up and it was a little hard to start... but once it was running it ran fine the rest of the night.
So... MAYBE there was something in the carb that got cleared out? MAYBE I had/have some bad gas? MAYBE I got some water in the tank? MAYBE I have no idea what I'm doing, got lucky, and I'm going fishing all weekend. Took Friday and Monday off of work.

Thanks again guys. Hopefully that was the end of it (for now.... wishful thinking).
 
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