Help! Mercury Engine Troubleshooting

[marcustaylor]

I have a 2006 Kenner with an 2006 90 HP Outboard Mercury engine. Everything is fine until I reach 20 mph, then it starts beeping and jumping. I have already looked at the plugs and wiring and they seem fine.....any suggestions?

 

[Coloradolakeboy]

Re: Help! Mercury Engine Troubleshooting

Is it EFI?

 

[Don S]

Re: Help! Mercury Engine Troubleshooting

2 stroke, or 4 stroke? EFI or carbed? Do you have your engine serial number handy?