1990 4cyl 40 Classic 2 Stroke
I’m unsure if this is the case but it sure feels to me that when I take off from Idle the engine sounds lumpy like it’s misfiring until I get to 2500 ish? RPM, it then sounds fine. This engine hasn’t been in the water for 2+ years and I’ve only just ironed out unrelated issues by fitting a new gearbox. Hence back in the water.
I had so many issues 2 years ago that I’m only now remembering when it was being used last a couple of years ago my voltage regulator/rectifier was putting out less voltage than it had been. I fitted a 2nd hand rectifier/regulator from eBay as a replacement for the rectifier.
I have a dual display digital voltmeter which for the seasons prior to this had been showing a reassuring 14.2 volts going to both batteries at WOT but I’m now only getting 13.6 - 13.7 volts never the healthy 14.2 V I’d been used to?
Could this be a failing rectifier/regulator and could it be at all related to my misfiring at lower revs. Or at least a starting point to consider? Or could it be the stator?
Appreciate all input - not sure where to start?
I’m unsure if this is the case but it sure feels to me that when I take off from Idle the engine sounds lumpy like it’s misfiring until I get to 2500 ish? RPM, it then sounds fine. This engine hasn’t been in the water for 2+ years and I’ve only just ironed out unrelated issues by fitting a new gearbox. Hence back in the water.
I had so many issues 2 years ago that I’m only now remembering when it was being used last a couple of years ago my voltage regulator/rectifier was putting out less voltage than it had been. I fitted a 2nd hand rectifier/regulator from eBay as a replacement for the rectifier.
I have a dual display digital voltmeter which for the seasons prior to this had been showing a reassuring 14.2 volts going to both batteries at WOT but I’m now only getting 13.6 - 13.7 volts never the healthy 14.2 V I’d been used to?
Could this be a failing rectifier/regulator and could it be at all related to my misfiring at lower revs. Or at least a starting point to consider? Or could it be the stator?
Appreciate all input - not sure where to start?