Black oil after five minutes of riding

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Dec 31, 2010 | 10:05 AM

#11

Mahones781

Thread Starter

Weekend Warrior

Joined: Sep 2010

Posts: 24

Likes: 0

From: Mass

Quote:

Originally Posted by papa hogg scoot

You didnt mention if engine is smoking or not? Does atv have power? Im sorry But didnt you say 450r? Not 450s?

No smoke, atv has power rode it yesterday, and yes its a 450r

Jan 3, 2011 | 04:17 PM

#12

budedm

Pro Rider

Joined: Aug 2008

Posts: 1,317

Likes: 0

Send you old oil to these guys. They will tell you EXACTLY what the contaminant is. I've used them twice and for $20, it's great.

http://www.blackstone-labs.com/free-test-kits.php

Jan 3, 2011 | 06:45 PM

#13

readymixer169

Of all the things I've lost in life, I think I miss my mind the most!

Joined: Jan 2009

Posts: 1,176

Likes: 0

From: North East IN.

Quote:

Originally Posted by budedm

Send you old oil to these guys. They will tell you EXACTLY what the contaminant is. I've used them twice and for $20, it's great.

http://www.blackstone-labs.com/free-test-kits.php

+1 I live 30 minutes from these guys and talked with one of their tech's personally since they do oil analysis on our readymix trucks. Very sharp guys. They can tell you all kinds of things about the condition of your engine just by looking at the used oil.

Jan 4, 2011 | 05:09 PM

#14

Scooter86

Extreme Pro Rider
Knows Old ATV Questions!

Joined: Sep 2003

Posts: 5,127

Likes: 3

Since it has 75 hours I would change the piston and rings. Cylinder will probably need replating as well. Heck, while you are at it the clutch probably needs a little love too. There are plenty of people who will swear these things last forever between rebuilds, really depends how hard you ride it. Personally I think 50 hours is the max for me. Do yourself a favor and replace with a forged piston. Cast and you will be lucky to get 25 hours out of it no matter how you ride.