| Author |
Message |
    
Buell_helper
| | Posted on Saturday, June 23, 2012 - 07:20 pm: | 
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I picked up a friend with a buell blast on the side of the road yesterday. The bike lost all power, blew out most of the oil, look like through the vent tube after he had ridden for and hour. We have added some oil back but the bike want start to do any additional trouble shooting. Seems to be a lot of pressure on the vent tube when turning over the engine. Any sugestions to get him back in the wind? |
Scott1965
| | Posted on Saturday, June 23, 2012 - 10:23 pm: |
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Sounds like excessive blowby. Bad rings? |
Voltage
| | Posted on Sunday, June 24, 2012 - 10:26 am: |
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any background on the bike? is it stock? how many miles. as many details big or small might help. did it act weird before it happened. last oil change etc. i have a service manual for my 02 blast if u cant find it online i can email it just pm me |
Buell_helper
| | Posted on Sunday, June 24, 2012 - 11:07 am: |
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The bike has only about 2500 miles, I thought about the rings also but wouldn't that be unlikely to happen at one time? Be more of a slow process. Is there something about a seal in the transmission that if leaks can but pressure back in to the engine?
I have the bike service manual. It is not modified, looks like stock all the way around.
Thanks for the help. |
Two_seasons
| | Posted on Sunday, June 24, 2012 - 11:49 pm: |
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There is a seal between the transmission and the engine. When that seal goes, engine oil migrates to the transmission and overfills the transmission, blowing the mixed oils out the trans vent tube.
You will need to drain the transmission, refill the trans with HD Formula+, then add the proper amount of engine oil.
Pull the spark plug and spray some "fogging" oil into the spark plug hole. Most auto stores have this oil.
Troubleshoot from that point.
(Message edited by two_seasons on June 24, 2012) |
Buell_helper
| | Posted on Tuesday, June 26, 2012 - 04:46 pm: |
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What will the fogging oil tell me? I understand the logic on the rest. |
Two_seasons
| | Posted on Tuesday, June 26, 2012 - 06:56 pm: |
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Fogging oil may give you enough oil in the cylinder to get it so you can turn the engine over. If there is nothing stuck and scoring the cylinder or a stuck valve.
If you do not have a rear stand for this bike, suspend it if possible from the garage rafters. Safety first...make sure you have secured the straps!
Get the tranny into fifth gear and spin the rear tire to ensure engine is freed up. And listen for abnormal sounds at this time too. |
Buell_helper
| | Posted on Wednesday, June 27, 2012 - 08:31 am: |
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The engine turns freely, does not sound as if there are any issues either in the head or cylinder. How is the best way to check the seal in the transmission? |
Two_seasons
| | Posted on Wednesday, June 27, 2012 - 06:52 pm: |
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Not sure about tranny/engine seal or how to replace it.
However, if it fails, what I said above happens.
You need to get a Field Service Manual.
Call Al at http://www.americansportbike.com/shoponline/ccp0-s plash/KHXCseo.html
You can probably get one from them. Excellent resource for all things Buell. |
Screamer
| | Posted on Saturday, June 30, 2012 - 10:54 pm: |
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More information on the Blast would help the diagnosis - if it hasn't already been resolved.
But, to answer Two Season's comment on crank seals...
One way to check a crank seal (on a twin, at least) - you need a vacuum/pressure gauge that's sensitive enough to read less than 5lbs. pressure/inches of draw.
Engine warm - if you put the gauge on the trans vent line (use a camp), and there's pulsing between pressure and vacuum (usually 3lbs or less- if I remember right) the crank seal is compromised. You may have pressure due to heat expansion and minor trans oil frothing but, there should not be vacuum. If the engine has bad cylinder seal the vacuum pull may be slight and harder to detect - but you'll have other issues anyway. Oil carryover in the air cleaner, mysterious fluid level changes - may also be symptoms of a bad crank seal.
Changing a crank seal requires the clutch compression tool and is easier when also you have the seal installation tool. |
Fasted
| | Posted on Sunday, July 01, 2012 - 11:20 am: |
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i have done the seal job on my bike . you DO NOT have to disassemble the clutch, so no compression tool needed. |
Screamer
| | Posted on Sunday, July 01, 2012 - 07:45 pm: |
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Fasted,
You may be right - I haven't replaced one in about two years. Tube frame, Blast and early XB Service manuals reference pulling the clutch assembly to remove the alternator rotor which needs to come out to replace the seal.
I have to pull the trans on my son's S1 next week. I'm curious - I'll try pulling just the front sprocket with removing the clutch. |
Screamer
| | Posted on Sunday, July 01, 2012 - 08:12 pm: |
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Meant to say "I'll try pulling the front sprocket without removing the clutch.." |
Bluzm2
| | Posted on Wednesday, July 04, 2012 - 11:00 am: |
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No, you have to remove the clutch "assembly" and the front sprocket at the same time.
Just remove the front rotor nut then the center clutch nut (left hand threads).
The entire assembly should slide off. The clutch pack will stay in one piece. Note that the rotor magnets may make things a bit difficult but it will pull straight off.
Brad |
Ezblast
| | Posted on Sunday, July 08, 2012 - 05:32 pm: |
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Concur |
Screamer
| | Posted on Sunday, July 08, 2012 - 11:05 pm: |
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Confirmed - have to remove clutch. Glad my memory isn't failing on ever. |
Patd
| | Posted on Tuesday, July 17, 2012 - 11:25 am: |
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I have recently purchased a 2001 Buell Blast. The bike was in for new rocker gaskets back in 2010, again in 2011 and is now on it's third visit to the shop in a couple weeks for the same problems. What is the issue with sealing the rocker box?? Even the shop can't give me an answer. Any suggestions? Are the 2001's all that way, or am I the proud owner of a problem bike? Any assistance would be appreciated. |
Reepicheep
| | Posted on Tuesday, July 17, 2012 - 12:15 pm: |
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Possibly a combination of old parts (the paper gaskets were junk) and installation (surface prep and torque and other attention to detail is king). |
Patd
| | Posted on Wednesday, July 18, 2012 - 11:47 am: |
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Thanks Reepicheep. They've been delaying delivery and that can only mean they can't fix it or they've given up. It's a reputable dealership and it must be driving them crazy. I'd sure like to have some kind of answer. I'll probably talk to the Service Manager again and see what his plan of action is. Perhaps we can enhance the bike through parts and they can toss in the labor. We'll see.} |
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Buell lost all oil