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Does my motor have SLOW feature?

S

sashko1

Contributing Member
Hi,

I've got 1989 Evinrude 48 HP SPL motor (VE48ESLCER)

It performs very well at all RPM ranges when in water under load (like boating on a lake) for the first 20 minutes or so. But afterwards it begins bogging down when in WOT, which feels and sounds like a cylinder is dropping off (?) But not dying. (Found similar/same occurrence on YouTube: www.[B]youtube[/B].com/watch?v=6HppgpOdCSs)

I did some online research and came to a preliminary conclusion that the motor's SLOW feature might be kicking in ...

Can someone confirm that my motor is equipped with such a feature please?

Also,

read somewhere that the tell-tale water outlet had to be relocated to top cylinder (?)
On my motor it's at the bottom of the exhaust cover (if I'm not mistaken about the cover name). Is there a kit to relocate if relocation is necessary?

Please advise?
 
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The S.L.O.W was featured on the 89 modeld 50 HP not sure if it was also offered on the 48 " special " motors.-----The special motor often did not have all the features to make it more affordable.-----Compare part # right on this site.
 
Well, gentlemen, I decided to go baby steps before attempting to rip off that flywheel and get to the PP.
I assumed that my SLOW feature was actually performing due to a real cause. Given that I personally took care of replacing the impeller and was 100% sure watter was pumped quite well from the pump, my next test location was the thermostat. Basically if it got stuck closed then the engine would begin overheating...

Long story made short.... Check the pictures ;)
 
Oops, I guess my pictures didn't upload !??

Well, I will try again tonight. Without pictures, the thermostat enclosure was broken! The back side of the thermostat cage / enclosure was pressed all the way to the back of the block's thermostat cavity. A little metal push rod (that I think was supposed to be in the bigger metal cylinder) came out completely! Total disaster!

I ordered new thermostat part. Now, is this problem common with these thermostats?

Onto the second point... I think the SLOW was acting correctly on the engine overheat condition (because of the broken thermostat). Now, the thinks started to get darker because I remembered that when I checked the spark plugs after my test ride on the lake, they were coated with milky substance (wet, not powder like -- lean). U-huh, water in the cylinders!!!! So late night ~1am I couldn't fall asleep and had to check the head.... Yeah, I had to go down to my garage and bite the bullet...

I found a little bit of water on both cylinders. The walls were in very nice shape, though, no scratches, nice and sooth. I cleaned the head, and then sanded it on 600 grit sandpaper on my flat work desk. Hopefully it will be flat enough for my new gasket (that was also ordered).

Wow, and I thought it was a motor in perfect condition as the previous owner / seller stated it!!!!
 
Thank you, kimcrwbr1!!! That would have been my following question .... torque...

I looked at thermostat diagrams and the way it was in the block opening I think it was installed correctly. The thermostat is being sold as one unit (though I'm pretty sure it can be disassembled). I'll try to post the pictures of the broken thermostat tonight when I get home.

Best regards!
 
Here's the picture of the milky spark plug.
SParkPlug.jpg
 
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