Final settings on oil injector pump?

[scooper77515]

Book said to get idle screw to touch, then two full turns, and line up the marks on the oil injector.

Primed it and all is running fine, but I am not clear on where the allignment marks on the injector are supposed to be in the end.

Are they alligned correctly now, or does it have to line up at IDLE?

2 turns in was quite a bit higher than idle when it started up. Closer to 4000 rpms.

 

[Gunsrunner]

In the book after you have done the prelimanary sync, you re-adjust your idle speed with the engine warm.
stop engine.
Final sync, move throttle until freeplay is eliminated then check alignment of the mark on the pump body and the edge of the lever.
:cheers:

 

[scooper77515]

Final sync, move throttle until freeplay is eliminated then check alignment of the mark on the pump body and the edge of the lever.

That is the part I was wondering about. Thanks

 

[scooper77515]

One more thing...

I had the boat idling at 3000 on land, but in the water with the more aggressive impeller, it was idling down near 1000 rather than 1500, as it used to.

So I tuned the idle up to 1500 in the water. Do I need to re-adjust the injector pump each time I mess with the idle screw?

Shouldn't it be running a little rich, now, since I bumped the idle UP? Is that acceptable, for the short term, until I get the first oily tank burned and start running straight fuel?

 

[Gunsrunner]

Yes i agree, that if you had to adjust idle to suit more aggresive impeller then you will be injecting more oil at the same time. I don't think this is a bad thing as long as you are happy to use and spend more on oil and a bit more smoke.
I don't think i would adjust oil injector to suit, because then when out of the water, engine could rev to say 4000rpm and you would only have enough oil for 3000rpm. i say could because of rev limitor, but if in gear?
This is my opinion, not from experience
This is an interesting question and i hope someone with modification experience chimes in because i also have new impellers waiting to go on!!!!
The other thing that would fix this problem is going pre-mix!!!

 

[scooper77515]

At least one other person sorta believes the way I do...a little rich is good, at least under the circumstance I am describing here.

Thanks for posting some encouragement :cheers:

Also, after a recent engine failure, I seem to feel a little more comfortable knowing that the new one is getting plenty of lube.