If your valves seats are bad, it is not uncommon for a motor to smoke on startup. As the engine warms, tolerences generally tighten. If there is much less or no smoke after the motor reaches operating temp, it has been my experience that there is a valve issue.

In regards to adjustment, it would not be unreasonable to think that if a valve is way out of adjustment, the motor is smoking due to that.

I probably should have wrote "you may need a valve adjustment or may need valve seats."

 

I don't know exactly what is required, because I got someone else to fix it for me. You could just go to a yamaha dealer or atv/motorcycle repair shop and ask them what all you will need. I THINK all it needed was the one way assembly, which cost $130, but i'm not 100% sure of it, and don't want to steer you in the wrong direction.

 

well sounds like you wont be able to help much after this recon, so hopefully someone else sheds some light on me. but adjusted the valves today but i think i did it wrong because now the valves tick, will that hurt anything or shall i tear into it and fix em? but i went out riding some and i opened it up and before i shifted (high rpms) it sounded like the rev limiter, but it doesent have one right? then i got home and pulled the plug and the tip of the spark plug was dented in a little bit and the gap was very small. but i regapped the plug and went out and hit a jump and it died and i lost spark, it fouled the plug i think. gonna try a new plug in the mornin, but im gettin kinda worried but

 

Try adjusting the valves again. If the valves are adjusted wrong they could cause this rev limiter effect you're having. Also, check the intake manifold for cracks, this is a common problem on warriors that often goes overlooked.

 

Ok; this has gone on long enough.
The valve seats have nothing to do with smoking. Valve seats are what the valve seals against. If it smokes when first started, it may be valve worn valve guides. What happens is when the valve guides wear the valve stem can wobble around and wear out the valve seal that keeps engine oil out of the combustion chamber. The smoke comes from the oil that drains out of the head and trickles down the valve stem.
Adjusting the valves will do NOTHING for an oil smoking issue. 0, none, nada.

Maddmudder13, you have 3 choices.
#1 Ride it until it shreds up the engine and there won't be anything left to rebuild.
#2 Fix it now, before you trash the engine completely.
#3 Leave it parked until you have the $$$'s for a proper rebuild.

I vote for #3, but it's your quad.

 

well first do you know the people that owned it before you? If u still have there number ask them if they ever changed the oild filter B/C allot of people just get oil not filter and the metal could just be from break in and over time. Another thing you say it only smokes when u first start it??? could be valves on that probalem. I would run awhile and see how much oil it uses. If it doesnt use much then i would just keep it like that. A lil oil burn from a 88 really isnt that bad!

 

Doctorturbo.

You seem to believe you have all of the answers. Why don't YOU tell us why it is smoking on startup.
I am also interested in hearing why you think a little smoke on startup us cause to rebuild an entire engine.

This should be good...

 

fahg i agree with you on that last post about why u need to rebuild the engine but he is right about the valve guides. My buddies truck has same prob smoking on startup and it is his guides but he not care. but i think if vavles were so outta wack it smoked that it would hardly run and would constantly smoke. But the vavle seats is also a possible idea.

madmudder13 i would not worry on shavings and check vavle seat and vavle guides. Get a service manual before you take on that task unless you are really good with engines

 

Thanks.
Any of us that have been young and poor know what it's like to drive a car that smokes on startup. Drove cars like that for years. Yes, they all eventually died. Never did one of them grenade a motor from a little smoke that went away after that car got warm.

Have a nice day.

 

I believe I have already answered that. I will post it again for you though.
"If it smokes when first started, it may be valve worn valve guides."
I'm not.
If you re-read the first post, I AM concerned about:
Now; I will be the first to admit I don't know what "a 1/4 of a pile of metal shavings" means but when I see "pile of metal shavings" and oil filter in the same sentence it can't be good. If that much metal get into the filter and clogs it up bad things are going to happen. If the filter by-passes, even more bad things will happen. THIS is why I recomend a rebuild.
Fahq if you want to run your engine with a "1/4 pile of metal shavings" in it, knock yourself out.
I'm just advising maddmudder13 not to.

This will explain valve guides for you if you want to learn about it.
Really good site
Engine explained or this one
Engine explained