You're probably getting tired of me!

[wlbolerdo]

Two questions, first I've rebuilt my '92 70hp evinrude. I've got maybe 8 hours on the motor. Pulling into the dock Sunday I took it out of gear and the motor was racing, I shut it down. Got home checked it out and found the throttles were not rolling back with the cam, almost but not all the way. Checked it yesterday in the garage and everything is now working fine. I'm running double oil for the break-in. Any Ideas? Maybe some WD-40 on the outsides to lubricate?
The other thing, I replaced the rectifier some time ago and the volt gauge is now reading about 16 or 17 volts. Is this OK or is there a potential problem brewing?
Wayne

 

[DJ]

Re: You're probably getting tired of me!

1. Did you do a "Synch. and Link?" If not, go back to your manual and perform that operation.

Are your cables binding?

A little white lithium grease is fine.

2. Your engine does not have a voltage regulator. Those readings are normal.

 

[wlbolerdo]

Re: You're probably getting tired of me!

DJ,
Thanks for the reply. I had a synch and link done by a boat mechanic, I was thinking let the pros do it. It's only the three carbs that are connected with that rod that didn't go back all the way and like I said, it was fine yesterday. I'll do like you suggested. I have lithium grease.
And I won't worry about the volts.
Thanks,
Wayne

 

[JB]

Re: You're probably getting tired of me!

Ditto on the lithium grease.

Too many people think WD-40 is a lubricant. It has oil in it, but it is a water displacer (WD-?) not intended as a lubricant.

 

[bigred69]

Re: You're probably getting tired of me!

JB is right.
WD-40 was originally was made for NASA on space craft as a water dispersant. The name comes from water displacement formula #40 ( took em 40 tries to get it right). Works good as a nut buster not for lube.

 

[wlbolerdo]

Re: You're probably getting tired of me!

Thanks guys for the replies. Must be why we can spray it into distributor caps when they get moist, car dist. at least!
Wayne

 

[charliedaubitz]

Re: You're probably getting tired of me!

if you double up on the oil, dosen't it make it run leaner?

 

[wilde1j]

Re: You're probably getting tired of me!

No!

 

[wlbolerdo]

Re: You're probably getting tired of me!

Charliedaubitz,
Running double oil will make it run richer. More oil, more lubrication. Running the boat lean may lead to internal power head problems. I'll run it this way for about 20 hours to break it in.
I mentioned the oil thing as a possible cause to why the carbs were sticking open somewhat causing the motor to rev high at idle, perhaps gunking up the butterflies and causing them to stick.
Wayne

 

[elhombre]

Re: You're probably getting tired of me!

if you double up on the oil, dosen't it make it run leaner?

I've heard this before and had trouble supporting the argument that additional oil does "not" lean the mixture. If running a 50:1 premix thru a vro, wouldn't the effective mixture of fuel (gas) to air be leaner resulting in higher combustion tempertures? whats the propper explanation hear?

 

[wilde1j]

Re: You're probably getting tired of me!

The oil has NO effect on rich / lean. We're talking the ratio of air to fuel (gas) here. If you're talking rich / lean OIL, that's another thing. BTW, a double oil mixture will NOT crap up the butterfly operation. It has no effect there.

 

[charliedaubitz]

Re: You're probably getting tired of me!

The oil has NO effect on rich / lean. We're talking the ratio of air to fuel (gas) here.

we'll just have to agree to disagree, If you have a fixed jet and increase the thickness of the fuel by adding oil, the fixed jet flows less. What it does flow is containing more percent of oil to fuel. Fuel, not oil determines fuel/air ratio.
Two cycle oil in a outboard isn't considered a fuel, it's necessary component to the fuel for the lubrication of the lower end and piston

 

[elhombre]

Re: You're probably getting tired of me!

I agree.

 

[wilde1j]

Re: You're probably getting tired of me!

charliedaubitz , the viscosity of the fuel oil mix doesn't change appreciably until you have 75% oil or more and that's what affects the fuel/oil flow rate. The oil does , in fact burn, in all 2 stroke motors. I guess you're right if you're using a TON of oil.