huntnfishguy
Cadet
- Joined
- Aug 10, 2014
- Messages
- 8
I will try to keep this as short as possible. Issue started about month ago. I have checked the gas and no water. Added Sea Foam just to be safe. I have always ran ethanol free gas for last 4 years. Changed the plugs and fuel filter. Checked the screen on fuel pickup tube. Motor had a intermittingly miss at idle but always started right up and trolled all day at about 600 rpm. What it does when you put the hammer down it jumps to 2500 rpms and then as you trim it up it slowly climbs to 4500 rpms with just myself in the boat. Add a 2nd person and I can only get to around 3500 rpms. Use to top out around 5800 rpms. Had it at local repair shop Coil to #2 & #3 cyl was weak and intermittingly. They changed coil and checked the electrical components. Good spark. All OK. They tested the cyl compression. 120# or better on all 4. 45 # of fuel pressure at the injectors. Everything seems fine except on top end. Motor runs smooth. Local shop has no dino equipment that could read any error codes. He feels stumped. Before I take it to a shop that does have the equipment was looking for any suggestions on anything else to try. Its a ways down the road to nearest Yamaha dealer.