Oil Leak - Honda ATV Forum
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post #1 of 10 (permalink) Old 10-19-2010, 05:27 PM Thread Starter
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Oil Leak

Picture is of an oil leak i recently discovered. It is leaking very heavily, i cleaned it all off and then went for a 1 mile ride and it looked like this. The oil fill cap is just outside of the frame on the right.

I know it could be many things but I'm hoping that someone will recognize an apparent problem. I felt and looked above this spot for broken or punctured lines and found nothing, so I assume it must me coming from the seal that can be seen in the picture. Would that be just a broken seal or maybe a blown head gasket? See what you think... It's my '05 Rancher AT 400.

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2003 Bombardier Quest 650
2005 Honda Rancher 400, 25" Kenda Bearclaws, Mad Dog gun rack, Cup Holder, Custom Audiopipe, .50 cal Ammo Can
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post #2 of 10 (permalink) Old 10-19-2010, 05:30 PM Thread Starter
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Sorry mods, didn't mean to post three of these. If you delete two of them please keep this one up.

2003 Bombardier Quest 650
2005 Honda Rancher 400, 25" Kenda Bearclaws, Mad Dog gun rack, Cup Holder, Custom Audiopipe, .50 cal Ammo Can
Coming soon: Improved metal floorboards

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post #3 of 10 (permalink) Old 10-19-2010, 05:33 PM
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Just looks like the base gasket under the cylinder is leaking, to me.

Most 4-wheeler problems are caused by a loose nut connecting the handlebars and the seat!!

You only need two tools in life -- WD-40 and duct tape. If it doesn't move and should, use the WD-40. If it shouldn't move and does, use the duct tape.
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post #4 of 10 (permalink) Old 10-19-2010, 05:50 PM Thread Starter
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Which means what? Just an inexpensive gasket to replace? How in depth would replacing that be?

2003 Bombardier Quest 650
2005 Honda Rancher 400, 25" Kenda Bearclaws, Mad Dog gun rack, Cup Holder, Custom Audiopipe, .50 cal Ammo Can
Coming soon: Improved metal floorboards

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post #5 of 10 (permalink) Old 10-19-2010, 05:52 PM
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You have to pull the valve cover, head, and cylinder off to replace it.

Most 4-wheeler problems are caused by a loose nut connecting the handlebars and the seat!!

You only need two tools in life -- WD-40 and duct tape. If it doesn't move and should, use the WD-40. If it shouldn't move and does, use the duct tape.
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post #6 of 10 (permalink) Old 10-19-2010, 05:54 PM Thread Starter
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Thanks, ill try to look into that.

2003 Bombardier Quest 650
2005 Honda Rancher 400, 25" Kenda Bearclaws, Mad Dog gun rack, Cup Holder, Custom Audiopipe, .50 cal Ammo Can
Coming soon: Improved metal floorboards

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post #7 of 10 (permalink) Old 10-19-2010, 06:00 PM
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The oil that gets pumped to the top of the engine goes up through that front bolt hole, around the bolt. That's probably why it's leaking so fast.

Most 4-wheeler problems are caused by a loose nut connecting the handlebars and the seat!!

You only need two tools in life -- WD-40 and duct tape. If it doesn't move and should, use the WD-40. If it shouldn't move and does, use the duct tape.
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post #8 of 10 (permalink) Old 10-19-2010, 07:17 PM Thread Starter
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Alright thanks. I should be able to tear into it Saturday.

2003 Bombardier Quest 650
2005 Honda Rancher 400, 25" Kenda Bearclaws, Mad Dog gun rack, Cup Holder, Custom Audiopipe, .50 cal Ammo Can
Coming soon: Improved metal floorboards

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post #9 of 10 (permalink) Old 10-19-2010, 07:32 PM
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look like a leaking base gasket..replace it..easy fix.

'89 trx350D foreman 4x4...'85 vf700c magna, '83 cx650c , '03 trx450fm foreman 4x4 , 2015 Yamaha waverunner fx cruiser ho
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post #10 of 10 (permalink) Old 10-27-2010, 01:10 PM
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Just be careful of the oil rings taking them out and back in. Also I had to adjust the valves when I took mine apart. You might or might not have to do that. You will know when you crank it back up

2008 Honda Foreman 500 ES PS 4X4
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