Oil pump lines
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- Emit R Detsaw
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- Location: Phoenix, AZ
Oil pump lines
My Buffalo has had a chronic oil leak for the past few months or so - fresh injector oil on the ground whereever it was parked. Anyway, after rebuilding the carbs (leaky center float valve), I decided to tear into the pump and peripherals to see if I could find the problem. Turns out the right cylinder top line had fractured at the pump where the line goes into the plastic disc under the pump. The more shocking discovery, though, was that the banjo bolt for the center cylinder (fourth one from the left) was COMPLETELY out and rolling around in the bottom of the starter cavity, thus pumping fresh injector oil to into said cavity and out the drain hole to the ground. Mystery solved, but what to do? The bike has run well and given no sign of trouble. So, my question is - does that hole go to the top of bottom end of the center cylinder, and, since the piston looks to be sound as it appears in the intake and exhaust ports, should I just repair the lines and run it, or is this a death knell that I haven't heard yet?
- oldjapanesebikes
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These things are over-designed but I have to admit I'm surprised it kept running I can't recall exactly where the fourth from left injection point puts its oil - perhaps other will jump in with that info. If as you say it otherwise sounds fine, then I suppose its possible that there was enough injector oil being circulated via the SRIS system, depending on how rich the setting was, that you might be OK.
If there are no other signs or indications of impending disaster, I'd be tempted to replace the oil lines, make everything tight, buy the best injector oil I can find and see what happens.
If there are no other signs or indications of impending disaster, I'd be tempted to replace the oil lines, make everything tight, buy the best injector oil I can find and see what happens.
Ian
If at first you don't succeed, just get a bigger hammer !
If at first you don't succeed, just get a bigger hammer !
- oldjapanesebikes
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Did a bit more checking, and I think that the fourth from left line is actually the centre piston lube, first, third and sixth are crank. This is based on the diagram in the original service manual located here on page 43. If correct, then assuming your SRIS system is working, it may have provided enough oil for the cylinders under light load conditions and you might be OK.
I'm sure others will jump in with additional comments.
I'm sure others will jump in with additional comments.
Ian
If at first you don't succeed, just get a bigger hammer !
If at first you don't succeed, just get a bigger hammer !
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Ian is most likely correct about it all.( Taught him everything he knows har, har) There was most likely sufficient residual oil available to keep your engine lubed sufficiently. The problem with the line being loose and unattached, is it would have basically been a vacuum leak as that port opens directly to your intake port, so don't ride it till it's all fixed. No point in tempting fate. If the piston didn't show any scuffing, then your probably OK to go with little drama. Your caught it quick, so you'll be all right. Cheers.
Fred
Fred
Suzuki GT 750s
Ducati 750 GTs
2007 Duc 1000 GT (the clone)
2002 V Strom 1000 (lives again)
Suzuki RE5s
CBXs (18 cylinders, 72 valves)
Ducati 750 GTs
2007 Duc 1000 GT (the clone)
2002 V Strom 1000 (lives again)
Suzuki RE5s
CBXs (18 cylinders, 72 valves)
- Emit R Detsaw
- On the street
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- Joined: Wed May 13, 2009 9:53 am
- Location: Phoenix, AZ
- Emit R Detsaw
- On the street
- Posts: 17
- Joined: Wed May 13, 2009 9:53 am
- Location: Phoenix, AZ
UPDATE - since I have three spare engines, I thought a QnD fix would be to take a set of lines off one of the others and get back to riding. Well, although the lines I took off appeared intact, they (or the little o-rings sealing off the pump and disk under the pump) have proven to be faulty as well - so, I took a shotgun approach to the fix and ordered everything for the injection system (save for the pump itself) from the tank to the cylinder openings. Either this is gonna fix it, or I will take my wife's Glock and shoot the bike until it looks like a Bonnie and Clyde getaway vehicle.
- oldjapanesebikes
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Sounds like a plan I buy the sealing washers (part number 09168-06002) in bulk - they are just an aluminium sealing washer out of the Spaenaur catalogue and average out to about $0.15 ea instead of the $0.75 ea that Suzuki wants for them.
Ian
If at first you don't succeed, just get a bigger hammer !
If at first you don't succeed, just get a bigger hammer !
- Emit R Detsaw
- On the street
- Posts: 17
- Joined: Wed May 13, 2009 9:53 am
- Location: Phoenix, AZ
- oldjapanesebikes
- Moto GP
- Posts: 3229
- Joined: Sat Feb 07, 2009 12:43 am
- Country: Canada
- Suzuki 2-Strokes: GT750(Jx3,L,M,A,B),T500
- Location: Ontario
- Contact:
- Emit R Detsaw
- On the street
- Posts: 17
- Joined: Wed May 13, 2009 9:53 am
- Location: Phoenix, AZ