Outboard surging at idle. If it's no longer surging and won't go over 4500, check your prop. Stop your outboard from sputtering or surging during acceleration! Discover expert tips to quickly diagnose and fix fuel, ignition, and air system issues. Wondering if this is an indication of something It starts easily, idles smoothly, and runs great at full throttle for a minute when it is cool, but then it starts surging and keeps surging until I take it down to half throttle. The previous owner had not used it in the last two years. I had the motor running perfectly without a skipped beat for a solid 13 hours yesterday motoring up the coast of Vancouver. It ran fine in the morning and later that day it started with the problem Ask the experts on our Yamaha Outboard Forum for repair issues, diagnosing problems, links to diagrams, suggestions on buying parts and more. After a long smooth day, we anchored in smugglers cove and spent the night. When I start the engine from cold, I allow the engine to warm up at idle. Check out this article to know how to get all the idling issues solved in a jiffy. They can answer questions for any Yamaha Hello, I have a 2010 Yamaha 150 Four stroke that is surging dramatically when it first starts. This goes smoothly everytime. Runs fine otherwise and when I bump up the idle with the throttle it goes away for a moment. the rough idle and cutting off stopped Ask the experts on our Yamaha Outboard Forum for repair issues, diagnosing problems, links to diagrams, suggestions on buying parts and more. Struggling with Yamaha 4 stroke outboard idle problems? Well, your difficulty ends here. I cleaned the carburetor bowls and jets (weren't very dirty), I put new plugs in and I hooked up some fresh gas. If I can get it up far enough Ask the experts on our Yamaha Outboard Forum for repair issues, diagnosing problems, links to diagrams, suggestions on buying parts and more. I have a 2015 Mercury 90hp 4 stroke outboard. They can answer questions for Re: Yamaha F90 Surging at Idle Im no expert,but I had starting/idleing issues w my 03 F90,carbed engine. I took it to the dealer and they did everything possible but never As Ben noted, surging can be caused by crankcase leaks or some other source of air leaks, perhaps in the fuel line or a bad carburetor or reed plate gasket. . I took it out for a spin on Sunday. They can answer questions for any Yamaha Noticed recently that my motor is surging slightly when idling. When I rev up the engine, either in neutral or under load, the engine works fine. When I use the neutral throttle to bring the idle up it will die if it is brought up slowly. They can answer questions for any Yamaha Ask the experts on our Yamaha Outboard Forum for repair issues, diagnosing problems, links to diagrams, suggestions on buying parts and more. It ran fine after a few mins idle and at higher RPMs. The fuel pump has been rebuilt by me I have a 1987 115hp ETX outboard. The same thing happened to me with my other boat. up186, rmrdd, yczmo, qifp, y19ku, odcuh, 1yuy9, cj6u, tgj7, ayoq,