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Question on outboard motor
Posted on 5/17/12 at 6:35 am
Posted on 5/17/12 at 6:35 am
I have a Johnson 35 outboard motor. When I am running it at half or full throttle the motor feels like it jerks can anyone tell me what is causing it to do that. I replaced the old fuel line and head gasket. While idling it runs like a charm. Thanks for the help
5
Posted on 5/17/12 at 6:37 am to lsutigers0705
Fuel pump?
Posted on 5/17/12 at 6:38 am to Me4Heisman
I haven't replaced the fuel pump. Do u think that might be the pblm?
Posted on 5/17/12 at 6:56 am to lsutigers0705
Jerks as in looses power for a second or jerks side it side like its hitting something?
Posted on 5/17/12 at 7:09 am to DownshiftAndFloorIt
Like it is hitting something. But it's not hitting anything
Posted on 5/17/12 at 7:13 am to lsutigers0705
Sounds like something could be stripped or worn out to me. Is the prop beat up bad? Take it off and see if the splines are boogered up.
Could also be a misfire. Could be lotsa stuff.
Could also be a misfire. Could be lotsa stuff.
Posted on 5/17/12 at 7:16 am to lsutigers0705
Have you checked the kanewter valve?
Posted on 5/17/12 at 7:18 am to DownshiftAndFloorIt
The prop is not in the best shape. I looked at the splines and it looked ok. I have another prop that is a three blade I was gonna put on. The one on It now is a four blade. Will that make a difference ? Going from 3 blade to a 4 blade.
Posted on 5/17/12 at 7:19 am to lsutigers0705
Dumb question where is that valve located at.
Posted on 5/17/12 at 7:40 am to lsutigers0705
Shouldnt see a big difference in the 3 and 4 blade on a 35 hp. 4 blade will have better hole shot and more stable drivin WOT on bigger rigs, but prob not enough for you to tell unless the pitch is off.
Posted on 5/17/12 at 7:40 am to lsutigers0705
If the 3 blade is less dicked up than the 4 blade than it probably will. A prop that is beat up could be out of balance which would make it do weird stuff when you run it fast.
Does it jump when you rev it up in neutral or only when it's in gear?
Does it jump when you rev it up in neutral or only when it's in gear?
Posted on 5/17/12 at 7:47 am to DownshiftAndFloorIt
quote:
Does it jump when you rev it up in neutral or only when it's in gear?
Thats a good question, even though he prob hasnt ran it that hard in neutral to know.
Posted on 5/17/12 at 8:00 am to Langston
Check coils and replace spark plug wires. Works every time
Except when it doesn't.
Except when it doesn't.
Posted on 5/17/12 at 8:05 am to Elusiveporpi
It only does it when I am running half or full throttle. I have cranked it up in neutral. It only seems to do it when I have a load on it.
Posted on 5/17/12 at 8:08 am to lsutigers0705
quote:
It only seems to do it when I have a load on it.
Then Down shift is right, start at the prop.
Posted on 5/17/12 at 8:12 am to lsutigers0705
Sounds like something is going on in the lower unit to me.
Posted on 5/17/12 at 8:14 am to meauxjeaux2
Well I'm gonna start at the prop and change plug wires and coil pack and see if that helps it. Thanks guys for the help !!!!!!
Posted on 5/17/12 at 8:22 am to lsutigers0705
This may sound crazy but under WOT I have seen boats jump outta gear. My FIL party barge does this from time to time.
This post was edited on 5/17/12 at 8:35 am
Posted on 5/17/12 at 8:50 am to SemperFi n LSU
This sounds like a classic case of your whatchamacallit acting up.
Posted on 5/17/12 at 9:11 am to Elusiveporpi
SEAFOAM FTW!!
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