Just pressurise it to 75%as per the gauge instructions, it gives you the compensation values, on the instructions!! You see some on you tube using the gauges wrong, they pump 100psi into the left gauge then try and connect the right gauge, obviously this will want to turn the engine, as it’s giving full pressure in one big whack! Plus I always think you may lose a little pressure whilst trying to connect the right gauge!!
Awesome video, I have a ? For ya, ive always owned 2 strokes my entire life until couple days ago, i bought a 2006 crf250r, i cant get it to start or even attempt to. I checked all timing marks, i checked the flywheel wood ruff key, plenty of spark, has 80 psi compression and holds it until i release the pressure. I dont have a leak down tester rite now. What would your next step be? Valve clearances? Thank u.
3 things needed for an engine to run, spark compression and fuel. You’ve got spark. Compression looks good but I would most certainly check the clearances and triple check the timing marks. Have you tried pulling the rear carb boot of and spraying some ether or brake cleaner and then starting it? I would recommend against running the engine on either of those but if it does attempt to start, look for a fuel issue.
I don’t recall exactly on this bike but it is usually due to valve or valve seat wear. If you are asking what issues would arise from being too tight, then the valves will open too soon or not be fully closing all together causing hard or impossible starting.
Great CRF250R video, Ive watched a bunch and yours is the pick of the bunch. Well done.
Means a lot to me, thank you.
Just pressurise it to 75%as per the gauge instructions, it gives you the compensation values, on the instructions!! You see some on you tube using the gauges wrong, they pump 100psi into the left gauge then try and connect the right gauge, obviously this will want to turn the engine, as it’s giving full pressure in one big whack! Plus I always think you may lose a little pressure whilst trying to connect the right gauge!!
I go to 80 psi. Any more than that the o-rings will blow out in my adapter.
Great job on this video! I just picked up a 2008 that is hard to start and won’t idle hope it’s just a dirty jet.
Thank you. Check our valve clearances too.
Awesome video,
I have a ? For ya, ive always owned 2 strokes my entire life until couple days ago, i bought a 2006 crf250r, i cant get it to start or even attempt to. I checked all timing marks, i checked the flywheel wood ruff key, plenty of spark, has 80 psi compression and holds it until i release the pressure. I dont have a leak down tester rite now. What would your next step be? Valve clearances? Thank u.
3 things needed for an engine to run, spark compression and fuel. You’ve got spark. Compression looks good but I would most certainly check the clearances and triple check the timing marks. Have you tried pulling the rear carb boot of and spraying some ether or brake cleaner and then starting it? I would recommend against running the engine on either of those but if it does attempt to start, look for a fuel issue.
What was the issue with the exhaust valves being tight?
I don’t recall exactly on this bike but it is usually due to valve or valve seat wear. If you are asking what issues would arise from being too tight, then the valves will open too soon or not be fully closing all together causing hard or impossible starting.
that pilot jet was way too rich
This bike actually ran phenomenally once the jetting was sorted