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Old 09-29-2020, 10:18 AM
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Default 2014 YZ250F Oil Pressure

Does anyone know if there is a way to check the oil pressure of 2014 YZ250F? I had an issue where I purchased a bike that had some galling on the intake cam journal. I assumed that the previous owner overtightened the cam cap nuts on that side causing it. We'll after fixing it, it did it again to the same journal within 3 minutes of running. On the old YZ's you could check it as the oil was routed outside and had an area to check it. Just don't want to fix this thing again and go thru the same thing. The gaskets were correctly installed by the previous owner so the port wasn't blocked at the cylinder base or head gasket. Any ideas?
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Old 09-29-2020, 10:54 AM
cowboyona426's Avatar
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There should be a check bolt on the back of the head you can remove.

---------- Post added at 09:54 AM ---------- Previous post was at 09:51 AM ----------

https://www.manualslib.com/manual/11...age=102#manual

That link has the information you need.
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Old 09-29-2020, 12:24 PM
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Thanks! I didn't see that in my manual. After looking at the head it appears that only the exhaust cam journal has oil supplied to it from there. The intake cam collects it thru what drains down a hole in the cam cover. It really doesn't make sense to me but OK. Now to fix the head. I hate that I have to fix it and then get it all assembled to test pressure. Looks like I'll need to pre-oil the heck out of the intake cam and drop some oil down that hole so it's lubed for a short startup run.
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