Evinrude 1983 15hp. Motor hit Shallow bottom

[Panfishangler1]

Ok so, I was running on the shallows about 15 mph, when i hit a shallow bottom. MY motor on the back of my gheenoe (1983 15hp Johnson evinrude) stopped when this happenned, but I was able to 1 pull start it back up and off I went. ....

1 week later.

I take the motor/boat onto my lake. The motor did not 1 pull start like it always does. It took about 4 pulls. Now, the motor would not stay in Idle while in the neutral position. (remember until now, and ran like a charm and always stayed running while in neutral). When I shifted it into forward, I gave it some gas, and openned it all the way up, but the motor wasn't pushing that hard. It felt like the motor was struggling to move because it was jerking the movement of the boat....

10 min later, after the motor shutoff and i flooded it, I was able to start it up again, quickly shifted it into forward, and Then I was off. I openned it all the way up just to see if I got the speed back and I did. It Ran like normal and I was on plane. ...But when I slowed the boat down, The motor would stuggle to stay alive and slowly shutoff.

So, after the shallow water reef impact, I inspected the rod inside the motor. No chips, or bending of what so ever. The prop does not appear to be bent. So I dont believe I found any internal damage.

My next guess is that the problem involves a fuel issue. Anyways, like I said, the motor ran really well, but it is now struggling to stay on. The only thing that still worries me is the shallow bottom I hit about 2 weeks ago.

Any help would be amazing and greatly appreciated.

Thankyou,
Andrew

 

[oldcatamount]

Re: Evinrude 1983 15hp. Motor hit Shallow bottom

Whatever you hit with the prop or skeg, shouldn't effect the way the motor starts. If you bent somthing in there, you would not be able to run full speed. What you have sounds like a fuel delivery issue, maybe the impact has kinked a fuel line? You could clean and re-build the carb as it doesn't cost much and is regular maintenance anyway.

 

[Panfishangler1]

Re: Evinrude 1983 15hp. Motor hit Shallow bottom

Whatever you hit with the prop or skeg, shouldn't effect the way the motor starts. If you bent somthing in there, you would not be able to run full speed. What you have sounds like a fuel delivery issue, maybe the impact has kinked a fuel line? You could clean and re-build the carb as it doesn't cost much and is regular maintenance anyway.

With the 1983 Carb, there is pretty much nothing to it when it comes to rebuilding it...or am i wrong? What about the fuel pump. Is there a way to see if the fuel pump is working correctly. ?

 

[oldcatamount]

Re: Evinrude 1983 15hp. Motor hit Shallow bottom

Probably start at the carb, and you're right it's not a bad job to re-build. Just be sure that everything is as clean as possible. I would pay attention to the float level as the impact might have knocked that out of adjustment with the sudden up and down movement.

 

[Daviet]

Re: Evinrude 1983 15hp. Motor hit Shallow bottom

When you hit the bottom, did it actually stall the engine?
If it did you might want to check the condition of the flywheel key.

 

[Panfishangler1]

Re: Evinrude 1983 15hp. Motor hit Shallow bottom

Ok, the flywheel key is not damaged.

Now whith "spun-the-prop" issues, I took my prop and spun it with the gear in forward position. I twisted it with pressure, untill it clicked in the inside of the lower housing. What does this mean? I was able to spin it numerous times with pressure... Each spin resulted in a click inside the lower housing.

**important, I took my SECOND spare prop, ...and it did the same thing.

Thankyou.

 

[Rick.]

Re: Evinrude 1983 15hp. Motor hit Shallow bottom

Sounds like you have lower unit repairs to do. It should not rotate or click when in gear. Rick.

 

[Panfishangler1]

Re: Evinrude 1983 15hp. Motor hit Shallow bottom

Sounds like you have lower unit repairs to do. It should not rotate or click when in gear. Rick.

PLEASE watch this Video, as I just went outside to demonstrate what I was talking about. I need to know if anything is wrong with this picture, so I can be certain on what repairs I will have to do and what I need to buy. Its a Johnson Evinrude 1983 15hp. Thankyou so much for your time and help.

http://www.youtube.com/watch?v=tGIbdrrvLfs

...and there could also be nothing wrong with this picture and the motor looks to be fine. Please educate me as well

 

[bktheking]

Re: Evinrude 1983 15hp. Motor hit Shallow bottom

That means that it is rolling over on the compression stroke in your video, your plugs are obviously installed in the head in the video. Pull the plugs out and it will free spin.

 

[Al-53]

Re: Evinrude 1983 15hp. Motor hit Shallow bottom

the lower end looks ok so far....you may have really spun the hub and the rubber is torn up in side letting the prop spin on the hub....or its turning the engine while u turn the prop..does the flywheel turn when u turn the prop in gear..if so prop may be ok and just turning the engine ....

Again you can't tell if the key sheared until u pull the fly wheel....it can look perfect from looking at it....but when removed U see the key may be sheared....if it sheared and flywheel moved it will give poor performance..throws the timing off...

I would pull it..others will come and say more on it

Al

 

[bktheking]

Re: Evinrude 1983 15hp. Motor hit Shallow bottom

In order to determine if the hub is bad you need to draw a line on the the hub and one on the prop shaft then run it and see if the line has moved, search the forums on the hub test.

 

[Panfishangler1]

Re: Evinrude 1983 15hp. Motor hit Shallow bottom

Again you can't tell if the key sheared until u pull the fly wheel....it can look perfect from looking at it....but when removed U see the key may be sheared....if it sheared and flywheel moved it will give poor performance..throws the timing off...

I would pull it..others will come and say more on it

Al

Here are some pics with the key and flywheel. anything unusual?

thankyou

 

[jmendoza]

Re: Evinrude 1983 15hp. Motor hit Shallow bottom

Flywheel and crank, key and keyways are fine. Since your problem is an idle issue, meaning it dies at low speed, suspect something go jarred loose by the impact. I would pull the carb and check it. It may well be the low speed circuit and jets are obstructed. Check compression too as it's an easy thing to verify. Have you tried changing the spark plugs?

 

[old boat 54]

Re: Evinrude 1983 15hp. Motor hit Shallow bottom

I would not turn that prop with the plugs in it, or least pull the plug wires off.
You never know if it could fire or pop on one cylinder. You probably are not spinning if fast enough to fire a coil, but you dont want to find out the hard way. That prop can do some damage.

 

[Panfishangler1]

Re: Evinrude 1983 15hp. Motor hit Shallow bottom

I would not turn that prop with the plugs in it, or least pull the plug wires off.
You never know if it could fire or pop on one cylinder. You probably are not spinning if fast enough to fire a coil, but you dont want to find out the hard way. That prop can do some damage.

Thankyou.



ALso, on side note, I understand from looking at the video myself, that i was rotating the prop backwards....which occurred to me as a big no no due to waterpump damage. I have checked the waterpump and it is in good shape.

 

[Panfishangler1]

Re: Evinrude 1983 15hp. Motor hit Shallow bottom

Flywheel and crank, key and keyways are fine. Since your problem is an idle issue, meaning it dies at low speed, suspect something go jarred loose by the impact. I would pull the carb and check it. It may well be the low speed circuit and jets are obstructed. Check compression too as it's an easy thing to verify. Have you tried changing the spark plugs?

Cool, carb is pulled out right now. It soaked in seafoam for last two days. It looked like a few pinchs of dirt(cloggage) came out during this cleaning process. I will soon do the line test for the prop and check to see if anything has changed.

Thankyou

 

[Rick.]

Re: Evinrude 1983 15hp. Motor hit Shallow bottom

Just saw your video. Very impressive. Based on what I was there your lower unit acted fine. I would suspect you have no gear case problems. I agree that you need to draw a line across the prop to see if it is spinning. Once the carb. is cleaned, let us know how she runs. Rick.

 

[Panfishangler1]

Re: Evinrude 1983 15hp. Motor hit Shallow bottom

After doing the line test, The prop proved to be not spun. The engine is still having issues staying in idle and running.

I have a compression test on each cylinder of 90 after 3 pulls on the pull start.

Issue: My fuel connector seems to be having a leak. But Im not sure if this can be the main fuel issue. THIS is what i mean: When I Connect the fuel connectors (female on the gas tank fuel line, and male on the engine) , I squeeze the prime ball until its hard, but then gas keeps leaking out at the connectors. I tried replacing one of them (the female) and it kept on leaking out.


Once after a dozen pulls, the motor starts up, I have to quickly put it in forward to keep it going. when I slow it down with the throttle, the motor quits and shutsoff. There is no sign over heat.

 

[Rick.]

Re: Evinrude 1983 15hp. Motor hit Shallow bottom

Good about your prop. Compression sounds good to me. Your tank connection should not lead from pumping as it is under suction, no pressure there. You will have problems with leaky connections as eventually you will suck air into the line but I don't think that is your problem as the carb. will be full right after you pump your bulb. Does your motor have a slow speed adjustment knob on the port side? You could try turning that in a little to give it some more speed at idle. Rick.

 

[d.boat]

Re: Evinrude 1983 15hp. Motor hit Shallow bottom

Cool, carb is pulled out right now. It soaked in seafoam for last two days. It looked like a few pinchs of dirt(cloggage) came out during this cleaning process. I will soon do the line test for the prop and check to see if anything has changed.

Thankyou

Soak it in carburetor cleaner. I personally don't think seafoam will clean a carburetor properly..even though the can says it will do virtually everything under the sun.