89 120hp looper v4 engine

[drsmithtft]

Motor runs good until you open it up and then it starts cutting out at full throttle. Any ideas? Any advice would be appreciated. Thanks DRS.

 

[SCAngler]

Check your power pack it probably needs to be replaced

 

[racerone]

Use a timing light and determine if it is an ignition problem , one cylinder or all of them !!!------------trouble shooting is the way to go.------------------Just a new installation ??---------------Just changed the prop ???-----------Any change when you operate the manual fuel pump ??