Help

[NITRO7]

Need advise i have a 2008 150 efi engine has been running great but saturday i was running up the river turning 5600 rpm when all the sudden motor went to 4600 rpm. That all i can get it to turn now any suggestions what might be wrong. Motor does not seem to be missing. Also checked fuel pressure and it sems to be fine about 42 lbs.

 

[wrechin2]

Could be several thing. I would first suggest you replace the plugs. Many times a fouled plug will cause your issue. With the RPM you have lost, 1K is usually the result of 1 lost cylinder. This can be due to electrically or by the loss of fuel. Your particular engine uses a motorolla ECU. This means the coils and injectors are computer controlled. You will most likely end up taking somewhere that has a DDT (scan tool) to check it out. Like I said, start with simple stuff like plugs. Also check your fuel filter for water. Here is a link to a manual that will help you understand more about how your engine works!

http://www.mediafire.com/?55f9gv2e5235vwd