Hey guys, I've been chasing down problems with this bike for a while now. Basically, the oil isn't getting to the head. To verify this I took the banjo bolt loose on the oil line and there was no oil. I had the clutch cover off the bike and checked the oil pump. I spun it manually with the gear and could see that it was pumping and that the o-ring and spacer were still in place.

Then I put it back together and checked that I hadn't done something stupid with the oil filter. It was in good and while I had it off I started the bike for a couple of seconds to see if the oil was making it that far. After less than a second I could see that the oil was flowing up into the filter housing. When I installed the filter and took loose the lower banjo bolt on the oil line. After about 10 seconds when I started the bike there was still no oil flow so I shut it off. Now I'm stumped.:banghead:. The banjo bolt definitely had air puffing out of it pretty good, but I have no idea what the problem is now. The filter looked like it was saturated almost completely. Please somebody HELP!

Assuming the oil pump had supply that didn't look right. A lot more oil should be coming out. Make sure that the supply line is good and that the frame screen is clean. It might be time to open up the pump. Some scoring is not a problem and is actually normal for a used engine. Major gouges are not.

It kind of looks like oil is coming out the check valve (or is that a pressure relief?) and I don't think that is right. That the thing at the end of the oil pump on the passage to the filter housing.

A couple more things to check:

1) There is a small ferrule and o-ring that sits between the case cover and the oil pump. Problems may result if either are missing.

2) I had a problem where there wasn't enough pressure to get oil past the filter and up to the head. I took the oil pump back out and I had put in one of the impeller rings backwards (the dot was facing the wrong way). Put it back together properly and it worked.

If you haven't had the oil pump apart, I'd put money on #1

I have checked the o-ring and the other little piece that go between the pump and the case. They are both there. I took a video which for some reason is crappy quality once I put it on youtube, but it's of the oil line coming into the engine. I think it's pinched too bad.


I'm gonna have to adjust it but I remember putting it on there and not being able to do much with it. I'll report back after that.

Alright. I did all that I could really do. Check it out.

http://www.youtube.c...u/0/NBAkGHLAEPs

Is this acceptable? I guess I'll find out in the morning when I crank it up.

The line looks ok, but it's hard to tell. It should be pretty easy to get on, it only fits one way. You shouldn't have to do much twisting or bending to get it to fit.

You don't need to start the bike to check for flow at the head cover. Just kicking it over a bunch of times should be sufficient. I wouldn't even start it without it oiling properly, otherwise your going to toast your top end.

Cleonard is right.........is oil coming out the end of the oil pump where the cotter pin and seal is????????????????it shouldn`t be..that is some sort of antidrain back type of valve...

B

Okay. That is definitely where the majority of the oil was leaving the pump. According to my Clymer manual what's inside of that end of the pump with the cotter pin is a check valve. That is an inlet correct? Which means that the check valve is not working right and all of the oil is flowing out of the inlet.

Dang. I'll have to open it back up. I'll be out to a wedding this weekend but I'll have to work on it Monday probably. The clutch has to come out to get the pump out right?

brianhare said:

+2

There is only one pressure relief valve in the oil system and it is built into the oil filter. The valve on the oil pump is simply a check valve and oil should not be coming out where the cotter pin is. With no side cover on the pump in the video, restriction is out of the picture.

So the oil is supposed to be flowing through that check valve only in or only out?

Nothing should flow out of the check valve itself.

See where it says "Outlet Hole" and to the right is the cotter pin for the check valve?


The check valve slides in from the right side and shuts the outlet hole. When the pump is pumping, the check valve piston retracts and oil flows to the oil filter, crank, and head.

HeadTrauma said:

Exactly........when the pump is running oil comes out the outlet,,when the engine is off the valve closes to prevent drainback...no oil should come out the end with the cotterpin......if it does the seal is gone/torn/worn, whatever...replace the cotterpin,seal and spring.....or do what i did and say screwit and bought a new pump...it wasn`t that much..and gives me piece of mind...:thumbsup:


B

Alright thanks guys I'll check into it. I have my old engine so maybe I can rob the oil pump out of that. We've got it narrowed down now.

It has been a long time since I had a chance to work on the bike. I FINALLY got the oil pump swapped from my spare engine. I took everything on the pump apart and made sure there were no problems. When I got it put in the engine IT ACTUALLY WORKED!!! I took the banjo bolt loose at the head and a lot of oil was pushing out. The only thing I am worried about now is the clicking noise coming from the engine. I am guessing that it will take a little time to get everything oiled up in the head but I'm afraid to leave the bike running for that long. I will probably open the valve covers and try to oil the cam before starting it again. Any other suggestions or concerns about hearing engine noises?

berwin_06 said:

Well,geeeeezzzzzz welcome back:lol::lol:

Are you sure it`s not valve adjustment being out that`s causing the noise...you should check them..

B

I oiled the head as best as I could through the valve covers. Here is a video of what it sounded like for a second after I started it. Let me know what you think.

I adjusted the valves according to the manual. Still making noise but I think less since I got the oil pump going.

Sorry man.......hard to tell from a video sometimes....get a stethoscope and isolate whether it`s top or bottom noise is what i would do..

B

Wow, that's noisy. Like Brian said, it's hard to really tell what it is from your vid.
What did you set your valve clearance at?