Hello all, first I want to thank anyone who puts time into reading up on my issues. Might I add I’m brand new to the forum! I purchased a 2021 Merc 115 pro xs this past Tuesday (9/8/20) and had it installed on my family boat (pontoon). I’ve been breaking it in this weekend, and Saturday, all was well until it wasn’t. I got about 4 hours on the motor, I was traveling at about 3,800 rpm and it sputtered a few times and then shut down. I had a full tank of gas when I started. The motor will fire and start and after about 3 seconds Sputters, sucks a lot of air and then shuts down. I got a tow back to our dock, and started brain storming. I started with fuel, ultimately checked for kinked hoses, pulled Inline filter out and checked it, ended up taking a full 5 gal can of gas and sticking the hose in there to eliminate the thought of my fuel cell having issues. Provided me no different results. There is no inline primer ball, there is a lift pump on this model. I checked all the electrical connections and found nothing loose. Brain stormed last night. I remember when I’d trim up and down the voltage would drop some and the rpms would drop as well. I pulled battery today and took it to the parts store and had it tested. It came back good. I reinstalled the battery, looked over connections under the dash on the new gauge monitor system, found nothing. I used the bleeder on the fuel rail to bleed some fuel out and nothing has changed. Still fires and dies after a few seconds. If I use the throttle and rev while it fires it will sputter and fire a little longer ultimately stalling out. It’s under warranty but it’s a 2.5 hour drive one way to the marine shop. Any ideas I’ll gladly try, other wise I’ll take another day off and drop it off. Thanks! Eric
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Originally Posted by Weekender11
