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Discussion Starter #1
So I’m new here but you guys have helped me a lot just by reading. But I’ve got some issues that have me stumped. This 99 Honda Fourtrax was my first wheeler ever. Ran excellent for a year but then found out I was taught incorrectly on putting the oil filter in. Ran for a YEAR of daily riding and heavy abuse in the mud. FINALLY she started ticking bad. Didn’t know this was a very bad sign so I kept riding for probably another 6 months and finally one of my buddies pointed it out. Assuming top end is fried and need a complete rebuild? Still starts up and runs beautifully besides the major power loss in the higher gears. And then I drowned her finally after two years of playing in deep mud and ponds. Air box was full drained it started her up (probably my worst decision) and she started right up but died when I hit the throttle. Got towed out by a buddy replaced the carb entirely. Changed the oil and filter twice. Checked it for a week and stayed Golden. Well now she’s milky and the only reason I realized was because I had vapor looking smoke rolling out the crankcase vent line. Stopped riding it once this happened. What caused this? I didn’t get all the water out ? I pulled the spark plug and turned her over multiple times and hardly
Any water came out. Also I have pure white oil on the inside of my valve cover? Appreciate if even one person reads and helps me out with my Novel of misery lol
 

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Milky oil is from a water oil mix, your going to probably need a complete rebuild.
 

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Might end up being, but your going to need to break it apart and clean all the milky film out of the engine.
 

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Discussion Starter #5
I’m assuming that’s the only way to truly tell if my bottom end is trashed is to pull it apart ? Also my front brakes and rear brakes are shot. I’ve changed the pads all around, new cables, new MC, bled them a million times correctly with a bungee on the lever while opening the bleeder. I adjusted the pistons in the front drum and got them to move with no pads excellently, but with pads just the slightest. Pistons are shot ?
 

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Might be, if your cylinder walls are scorned then yea, have to open it up to see.
 

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Welcome , I run 300s myself , how's about a pic of what you are working on ------- there is a lot of info here but it is very hard to navigate and find ----- maybe try The Honda 300 Club on facebook
 

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Discussion Starter #8
@fishfiles Thank you, I will check them out. As for pictures I finally have today off I’m gonna rip the head apart and I’ll post pictures mid day.
 

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IAlso my front brakes and rear brakes are shot. I’ve changed the pads all around, new cables, new MC, bled them a million times correctly with a bungee on the lever while opening the bleeder. I adjusted the pistons in the front drum and got them to move with no pads excellently, but with pads just the slightest. Pistons are shot ?


if you can pinch the rubber brake hose right at the master and pull the lever and it get hard , then most likely it is air in the system , there is a sticky some where on how to pinch bleed the brakes , finding it might be tuff
 

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I’m assuming that’s the only way to truly tell if my bottom end is trashed is to pull it apart ? Also my front brakes and rear brakes are shot. I’ve changed the pads all around, new cables, new MC, bled them a million times correctly with a bungee on the lever while opening the bleeder. I adjusted the pistons in the front drum and got them to move with no pads excellently, but with pads just the slightest. Pistons are shot ?
Very easy to trap air just forward of the MC—pull that rubber puck out and you’ll see two holes—clear them if dirty. Jiggle the lever and see if you can get the air to release—you’ll see bubbles.
 

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Discussion Starter #11
@Goober when I was bleeding them with the brand new MC when I squeezed the lever it didn’t quite get hard but it shot brake fluid out of the hole on bottom everytime... with force lol made a mess. So maybe I did something wrong ?
 

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Also I’ve started to tear into the head. But this is my first time on a quad. I’ve pulled an 86 Yamaha it200 dirtbike top end apart piston and all. But this seems a tad bit different.. any tips? I know not to lose the timing chain down inside.. also the cam does not seem loose, nor the timing chain. Idk if you can actually tell if the chain is loose at this point, as I’m a newbie. How do I properly take that chain off? but here’s where I’m at so far
149046
149047
 

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Your cam looks rough
 

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@Goober when I was bleeding them with the brand new MC when I squeezed the lever it didn’t quite get hard but it shot brake fluid out of the hole on bottom everytime... with force lol made a mess. So maybe I did something wrong ?
Jiggle! Jiggle the lever.
Notice your hose may be slightly higher than your mc.
 

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Discussion Starter #16
So new cam and rockers? Would this be the source of my ticking? @TBRider @Goober Ill try the jiggle when I get home tonight. How do I that chain off? Mark the chain, Pull out tensioner, and pin the chain up so I don’t loose it ? I’ve halted the process because I don’t want to fuck it up with this chain. So I haven’t seen my jug and piston yet.. real anxious about it. Greatly appreciate all the input guys !
 
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