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Discussion Starter · #1 ·
Hi everyone, Im new here.My name is Konrad and I live in Fort Myers, FL.
I have question.I bought 2006 trx 250ex for my girlfriend and I wonder if that ticking sound is normal in this bike or is something else.There is a short video, you can hear it more on the right side of the bike.

YouTube - 2006 honda trx 250 ex
 

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Hi everyone, Im new here.My name is Konrad and I live in Fort Myers, FL.
I have question.I bought 2006 trx 250ex for my girlfriend and I wonder if that ticking sound is normal in this bike or is something else.There is a short video, you can hear it more on the right side of the bike.

YouTube - 2006 honda trx 250 ex
adjust your valves..they are loose..and if that don't solve your problem..your timming chain needs replacing. and welcome to the forums !
 

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Discussion Starter · #3 ·
where i can find any info about valve adjustment?I have service manual for 2006 trx 250 ex but either im blind or there is nothing about valve adjustment
 

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where i can find any info about valve adjustment?I have service manual for 2006 trx 250 ex but either im blind or there is nothing about valve adjustment
Did you look in the maintenance section? That's where it's located in the factory service manuals.
 

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where i can find any info about valve adjustment?I have service manual for 2006 trx 250 ex but either im blind or there is nothing about valve adjustment
if you have the service manaul..it should be in there somewhere on the spec's for it..first off..make sure you got a filler gauge set .second..remove the intake and ex valve caps..now..go to the flywheel side..remove the inspection cap ( has a sloted screw driver indention in it )..also remove the flywheel center screw driver cap..with a 17mm socket i think ?..rotate your piston to TDC ( top dead center ) on the ex stroke ( very important here ) one way to make sure your on the ex stroke..after you think your on the right stroke..turn the flywheel backwards very slowly...while doing this..watch the intake valve..if it starts to move...then your on the right stroke..loosen the 10 mm nut ontop of the intake and ex valves..with the filler gauge..incert this between the round valve and top of the valve spring..tighten down the 10 mm nut ..do both the same way..oh..and make sure you do this with a cold engine !..as for the spec's on the settings..sorry..i dont know what it is..it should be in your service manaul somewhere.
 

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Discussion Starter · #7 ·
one more question.How many valves does 2006 trx 250 ex have?4 or 2?And i check ex and in valve when piston is on TDC position or I check one and then i have to move piston to bottom position and then check other valve?
 

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one more question.How many valves does 2006 trx 250 ex have?4 or 2?And i check ex and in valve when piston is on TDC position or I check one and then i have to move piston to bottom position and then check other valve?
It has 2 valves. You need to check the clearance for both valves with the piston on TDC. Remember, there is a TDC on the compression stroke and there is a TDC on the exhaust stroke and you need to have the piston on TDC on the compression stroke to adjust the valves. When the piston is at TDC on the compression stroke, both valves will be closed and they need to be closed when you adjust the clearance. Also, remember the engine needs to be completely cold to adjust the clearance.
 

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Discussion Starter · #10 ·
I have a problem with inserting filler gauge between the adjusting screw and valve stem.Can I remove cylinder head cover and check vavles?
 

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No... you removed the caps right?? just bend the end of the feeler gauge. Also if you look on the sticker on the frame it will tell you the valve gap.
 

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Discussion Starter · #12 · (Edited)
I solved the problem with feeler gauge and I adjusted the valves. I started the motor, but the ticking noise was still there, so I waited a little bit for the engine to cool down. I then checked the valves again, and the EX valve went out of order.I adjusted the EX valve again and I checked the IN valve again, started the motor, ticking noise was still there, so I checked the valves again and the EX valve is now out order again!
 

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Discussion Starter · #13 ·
How should the feeler gauge sit in between the adjusting screw and valve stem. Is it supposed to be a tight fit, or a looser one?
 

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You cannot adjust these valves once you start the engine FYI you will get an in accurate reading everytime. The 250EX is virtually a bullet proof engine. the best way to adjust the valves is to remove the thin metal cover on the back of the engine stick a socket on the flywheel cover and rotate the engine around to allign the "T" notch with the notch in the cover. check the Exhaust valve if it's tight you are on Exhaust stroke rotate the engine 180 and re check the valve it then should have a little play in it.

You should have a decently snug fit you should hear a scraping sound as you move the feeler back and forth
 

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How should the feeler gauge sit in between the adjusting screw and valve stem. Is it supposed to be a tight fit, or a looser one?
The feeler gauge should touch, both the valve stem and the adjuster screw, but you should be able to pull it out freely, but with a little drag.

If you still have trouble, I think you can pull the valve/head cover off and adjust them on the 250EX, since it's a pushrod engine. I don't think the rocker arms are incorporated into the head cover on the 250EX.
 

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Discussion Starter · #16 ·
You cannot adjust these valves once you start the engine FYI you will get an in accurate reading everytime. The 250EX is virtually a bullet proof engine. the best way to adjust the valves is to remove the thin metal cover on the back of the engine stick a socket on the flywheel cover and rotate the engine around to allign the "T" notch with the notch in the cover. check the Exhaust valve if it's tight you are on Exhaust stroke rotate the engine 180 and re check the valve it then should have a little play in it.
I started the engine just for second but i heard the ticking noise so I turned it off.And I did make sure that piston is at TDC position on the compression stroke.

btw.If the valves are too tight, will I hear the ticking noise too?
 

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If the valves are too tight, will I hear the ticking noise too?
No, but if they're too tight, it can make the ATV hard to start.
 

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Discussion Starter · #18 · (Edited)
so i gonna wait to make sure the engine is completely cold, and then I will try adjust the valves again.Thanks for helping me


I just adjusted it again, and ticking noise is still there, so im thinking that the ticking noise is coming from the timming chain?
 

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someone have a howto video for valve adjustment for the 2006 250 trx...i have the same bike..im new and i do better with videos i can never understand what people are saying....thanks in advance...

by the way good video on telling us the problem...so easy to understand with videos..
 
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