I purchased this motor used 4 years ago and have had some level of difficulty since new. To date have had 2 of 3 injectors replaced, FFP replaced, a new starter, and thermostat, and several gaskets. This engine has also been very difficult to prop (it is on an 1989 Mako 171). At this time the engine is running much better, however idling in gear at the low and middle key position feels like it wants to stall but I can live with that. What is hard to live with is when the RPM's are at or just above 2000 the engine surges from 2000 to 2400 and back repeatedly. I have reset the TPS and ECU and "feel" it is better for a time but it probably isn't. any help would be appreciated. I am new to forums so if I missed any proper etiquette please let me know.
