1973 65hp evinrude No power?

[kyleg001]

Motor hasn't been in service for approx 10 years. I have gone through the restore tips. I have not rebuilt the carbs.

When I replaced the bottom end fluid, the drained fluid looked green and stunk, it also had what I think was an average amount of metal "dust" mixed into it, and there wasn't allot of fluid that came out.

Took the boat out 1st time, stated up with manual choke and warm up lever at full, and waited a couple minuets. When I attempted to shift into forward, it shifted hard, quickly bogged down and died. I felt as if I was in a car, whose transmission is going out.Repeated, and happened agian. Same with reverse.

I'm trying to think; besides needing a bottom rebuild, what could be the cause.

I'm not sure if the motor was at operating temperature, when I shifted and I have noticed that when going into gear the "warm up lever" is forced closed.

Is it possible that the engine is at to high of a RPM, when trying to shift? Could this be an accelerator cable/shift cable adjustment? Any suggestion or insight would be very much appreciated. Thank You for reading.

 

[kyleg001]

Re: 1973 65hp evinrude hard shift

Re: 1973 65hp evinrude hard shift

Any way to trouble shoot this out of the water? not under load i mean.

 

[dwco5051]

Re: 1973 65hp evinrude hard shift

Re: 1973 65hp evinrude hard shift

This can be a tough one to figure out though my first guess is something is locking up or frozen in the lower end. The fact that this motor has electric shift and hydraulic assist can make it hard to diagnose externally.

My guess is that the engine was stored with water in the bottom end lube and the lower bearing are locked up. Can the prop be tuned by hand in neutral. Make sure this is a 73 and not a 72 model before attempting a rebuild because there were changes made between the two years for the 65 horse motors.

 

[kyleg001]

Re: 1973 65hp evinrude hard shift

Re: 1973 65hp evinrude hard shift

Thank you for the reply,

The prop can be turned by hand while in netural

It is a 73 going by the serial number.

Is it possible for there to have been water in the lube if the lube wasn't white?

I think it might be mechanical shift, hydrolic assist. The shift disconnect is located under the lower carburetor.

 

[kyleg001]

Re: 1973 65hp evinrude hard shift

Re: 1973 65hp evinrude hard shift

Any chance this could be caused by to high of rpms?

Do you know what RPM range it should shift under?

 

[F_R]

Re: 1973 65hp evinrude hard shift

Re: 1973 65hp evinrude hard shift

Any chance this could be caused by to high of rpms?

Do you know what RPM range it should shift under?

You aren't supposed to be shifting it with the warm-up lever raised. Get it running right so you can lower the warm-up lever---then shift.

 

[ezeke]

Re: 1973 65hp evinrude hard shift

Re: 1973 65hp evinrude hard shift

The 1973 gearcase should be hydraulically assisted mechanical, not electric; the last electric shift was 1972.

As F_R indicated, the standard remote control had a lockout to prevent shifting into gear with the warmup lever raised; if you force it, you will break it.

You should try to set your idle under load on the water at around 650RPM.

Shifting while idling at much over 900RPM will destroy the gears eventually.

 

[dwco5051]

Re: 1973 65hp evinrude hard shift

Re: 1973 65hp evinrude hard shift

Thanks ezeke for clearing up what I meant to say on the differences between the 72 and 73 model. After reading my post today I realize I don't write well late in the evening. I should have wrote "could have" rather than "has" before electric shift. Sorry about the confusion.

 

[kyleg001]

Re: 1973 65hp evinrude hard shift

Re: 1973 65hp evinrude hard shift

Thank you ezeke, I will be out agian today.

Another question, about hooking up a tach, I understand it needs to be connected through the charging portion on the motor, but not exactly sure were to get the pulse from.I believe it should come off of the rectifier, but just wanted to check.

 

[ezeke]

Re: 1973 65hp evinrude hard shift

Re: 1973 65hp evinrude hard shift

If you have the standard side-mounted control, the gray signal wire is taped off inside the control.

The standard pre-1996 tachometers would require a positive (purple) feed from the ignition switch "A" post, a negative (black) feed from the small incoming negative "M" post, and of course the gray signal wire which runs through the engine harness to the terminal block at the engine.

Please click the thumbnail.

 

[kyleg001]

Re: 1973 65hp evinrude hard shift

Re: 1973 65hp evinrude hard shift

I see now, thanks ezeke. That grey wire actually does run back to the rectifier through the terminal block, and the positive and negative should be able to be pulled directly from a fused battery source. I'm off to get a tach.

 

[kyleg001]

Re: 1973 65hp evinrude hard shift

Re: 1973 65hp evinrude hard shift

I have hooked up the tach. Only one I could find was an automobile tach for 4cyc, I set it to 6 cylinders which should be equal to my 3 cylinder 2 cycle. I did a couple tests, not under load, The first reading was 3K as the idle adjusted the linkage so that it is barley touching the carb linkage, without moving the carbs at all.

Second run showed approx 1k to 1.5 k on idle. (The motor didn't seem to be running this fast)

Will this tach be appropriate for my needs?

Is it reading this because it does not have a load on it?

 

[ezeke]

Re: 1973 65hp evinrude hard shift

Re: 1973 65hp evinrude hard shift

You cannot use an automobile tachometer or a marine tachometer that is not for an outboard. The required setting is 6P.

See your outboard dealer: http://dealerlocator.evinrude.com/EN/?Rnd=1172157085156

 

[kyleg001]

Re: 1973 65hp evinrude hard shift

Re: 1973 65hp evinrude hard shift

Thanks ezeke, I will check my local dealer Tuesday

I understand that you are not suppose to use an automotive tac on an outboard engine, but setting the tac I have, to 6cylinder will cause it to count 3 pulses per rev. the stator on my motor I believe is 12 poles, making 6 pulses per rev. Taking 1/2 of what is being display on the auto tac, should give me a fairly accurate rpm.

Taking that into consideration I am now seeing between 600 to 800 rpms on the motor at idle, in neutral.

Please let me know if my logic is flawed.

Thanks for your help

 

[kyleg001]

Re: 1973 65hp evinrude hard shift

Re: 1973 65hp evinrude hard shift

I just did a load test, in a large bucket, and it seems to be shifting well now after the adjustment, it still dies after a few seconds, but is not a hard shift, this might be because the motor isn't up to temperature.

I need to verify my water pump, that I replaced, is working first before I check this any further

I'm also going to check the termostat, as I have not done so, I think it may be stuck closed, as the motor's heads were pretty warm and I wasn't getting crap for water out.

 

[kyleg001]

Re: 1973 65hp evinrude hard shift

Re: 1973 65hp evinrude hard shift

Water pump works fine.

Took the boat out and let it warm up for a few min, went to put into gear and it didn't shift hard.

The problem is that when I shift it runs for about a second and then dies. Almost as if the motor has no power.

Also interesting it runs better without the motor cover on?

I'll run a compression test on it tomorrow,

Is this a carburetor rebuild in the works?

 

[McGR]

Re: 1973 65hp evinrude hard shift

Re: 1973 65hp evinrude hard shift

Water pump works fine.



Is this a carburetor rebuild in the works?

YES!

 

[kyleg001]

Re: 1973 65hp evinrude No power?

yeah, just did the compression test, not at opperating temperature/closed throttle, 125psi through all three cylinders.

Its gota be the carbs then.

My coil packs(for the spark plugs) the outside cases are cracked. Could this cause the issue. I have checked for spark and all seem good

I was hoping it wouldn't be the carbs though, but better than the rings

 

[ezeke]

Re: 1973 65hp evinrude No power?

You should replace the cracked ignition coils. You can check them through the entire range of operation with an inductive timing light, but if they are bad, they can destroy the power pack.

What is the idle RPM out of gear but in the water?

 

[kyleg001]

Re: 1973 65hp evinrude No power?

Ignition coils on order.

I am only able to get the motor to run, in water and with engine cover on, at 1K rpms. Any lower and it dies.

I am assuming I need to tune the carbs, and I might as well rebuild them.
(Only about $16 a piece for each kit) What do you think?

Also, I got the automotive tach reading properly, I posted on it in the electrical fourms.
http://forums.iboats.com/showthread.php?t=351248