200x making a loud tick

[dream3wheeler]

there engine has a loud tick. just bought it and it runs nice but id like get this fixed up so it doesnt become a major problem. what should i do?

[kb0nly]

The 200's usually tick for one of two reasons...

Valve Adjustment
Timing Chain

The timing chain sounds like a slapping noise though, not so much of a tick. Does it sound like its coming from the head or the bottom end? If its coming from the top of the motor i suggest you check the valve lash adjustment.

But truth be told, the 200's all sound like a sewing machine. I haven't had a 200 yet that was totally quiet.

[Dirtcrasher]

Timing chain GUIDES wear out also as well as the timing tensioner not allowing the spring to do it's job.

I don't have a picture but once you lock down the bolt, 2 angled portions lock the tensioner. Sometimes they bind.

It's been awhile, but I believe you can thread in a long bolt and pull the tensioner into position. Open the left cover and it will all reveal itself.

Only other thing I can think of is a dirty oil filter rotor (don't even dare to ask me what that is :lol:) or the rubber plug not blocking off the oil gallery to the cam.

Easy stuff!

[atc007]

BUT,,we don't know what year it is yet!! So,give us a little more info. If it's 86-7,the cams on bearings and a much stronger design as far as oil depravation. But yes,, if it's a 1st gen,you probably/hopefully just need your valves set to .003,,No tighter!

[dream3wheeler]

its an 83. sounds like its coming from top end. i thought it might be the valves but i have no idea how to check it out.

[tri again]

its an 83. sounds like its coming from top end. i thought it might be the valves but i have no idea how to check it out.

Try clicking on the following words
service manual
They are also avail under the world class help section


and you can also try the search key for 'valve adjust'

A little tedious but a set of bent feeler gauges and maybe new o rings for the covers
and some uninterrupted time will do nicely.

You may even get a bike shop to do it for a few bucks.
Heck, almost any small engine shop could easily handle it in a few minutes.

[Dirtcrasher]

its an 83. I thought it might be the valves but i have no idea how to check it out.

DC smashes his face into his keyboard. We need a GIF for that :lol:

[atc007]

What's GIF ,,lol, i don't know that one!

[Mosh]

Before you go tearing apart the engine to adjust the valves...

On the top of the case above the sprocket is a bolt. with the engine running looosen that bolt and the timing chain adjuster will self adjust if there is life left in it. Generally every 1st gen 200x I have owned or worked on, 8-10 times the timing chain adjust procedure shut the noise right up..


Most valves suck up into the head which would actually close the clearence up between the valve stem and rockers, which would not cause so much a tick, but more of hard starting, idle issues, because the valve is actually being constantly loaded and held slightly off the seat. Hard for something to tick when there is no clearence to make noise by being loaded.

Either way the timing chain adjustment takes 2 minutes to do with one wrench..do that first.

[kb0nly]

I have had the exact opposite, that timing chain adjustment never does much of anything on any of the 200's i have wrenched on. Usually its either too worn or stuck. A long 3mm screw, the same thread as the taillight lens screws but about 3-4 inches long works good for tweaking them, but you have to be careful not to go too tight.

You remove the center bolt of the timing chain adjuster and thread the screw down through the center and into the adjuster, then start the engine and get it idling while warmed up, loosen the timing adjuster nut as you would normally and then pull up on the screw ever so slightly, don't overdo it, but if the noise starts to go away then hold the screw where its quiet then tighten the adjuster nut to hold it there. Shut off the engine, replace the center bolt on the adjuster and replace the rubber cap. Done...

If its top end noise then its the valves though, and it doesn't take "tearing apart of the engine" just removal of the adjustment caps. If you have the original tool kit you have everything you need, a 24mm wrench for the covers, a 10mm wrench for the adjustment lock nut, and a flat screwdriver to adjust it. Other then that you just need a feeler gauge. I have done this so many times i can do it in about five mins. The exhaust valve is easy to adjust, the intake you might find it easier to pull the gas tank off for better accessibility. Resist the temptation to add any sealant to the caps if they are leaking oil, you don't want any bits of silicone floating around up in the head. Get a couple o-rings, any hardware or auto parts store has them, just take the cap in to compare size and get one. I can get the green high temp o-rings from my local small town hardware store for $.20 each. Clean the surface it sits on before replacing the cap and a little bit of fresh oil on the o-ring just like replacing an auto oil filter.

I doubt you have any major problems... And if you can't get the noise to totally disappear don't worry, like i said, all these first gen 200's tick. Anyone who has one that doesn't likely has a fresh top end, and believe me it will tick after it wears in.

[rdlsz24]

I doubt you have any major problems... And if you can't get the noise to totally disappear don't worry, like i said, all these first gen 200's tick. Anyone who has one that doesn't likely has a fresh top end, and believe me it will tick after it wears in.

I agree, I chased the ticking of mine for several years. I ended up putting in a new oem cam and rockers because I was so annoyed by it. Adjusted everything, etc. It did quiet it down quite a bit, but it didn't take long for the ticking to come back. Argh

Rob

[Tri-Z 250]

Sometimes getting rid of the tick...invloves buying a 2stroke:lol:

[rdlsz24]

I agree...... I am considering trading mine for a first gen 250R or even a CR80 little dirt bike. Just to have another 2-smoke in the garage. I sold my sled last month so I am down to only 1 pinger right now.

Rob

[dream3wheeler]

well last night a changed the oil and i found metal shavings in the little filter. now what do i gotta worry about?

[Dirtcrasher]

IDK your particular but many of these motors have an "oil filter rotor" and screen behind the right case cover.

Shavings don't mean it's dying, my crate motors have drilling shavings that I clean after 20 hours or so. Yours could be a different problem.

Like said above, adjust the valves and do any maintenance outlined in the service manual. If you haven't owned this for 10-15 years, there are a number of issues you may have.......

[kb0nly]

Try a magnet on the shavings first of all, see if they are metal and more importantly steel that will stick to the magnet. Otherwise if they truly are metal they could be aluminum. It could also be some wear from the clutch. Are the filings big? A picture of them would help if you can post one up.

Otherwise if its running ok, other than the tick, fresh oil and check the timing chain adjustment and valve adjustment and then run it for a while, do another oil swap and see if you get anything more.

I also agree that you should get a cover gasket and pull the cover and clean the oil rotor as well. I have to do that on the next oil change on mine, i do it every other change, i find thats about the time it gets a little crud buildup and needs it.