HOLY HELL- Oil slick on my rear tire on the trip home - TwoWheelForum: Motorcycle and Sportbike forums
 
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post #1 of 14 (permalink) Old 05-30-2007, 01:17 PM Thread Starter
 
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HOLY HELL- Oil slick on my rear tire on the trip home

So yeah, cruising home after a nice ride around the lake not flogging the bike that hard just riding some twisties as well as the Big vulcans do. About a half mile or so from the house I start noticing that the chatter from the carbs is louder than normal, shortly after I slow down and see/smell oil burning off the exhaust. Luckily I slowed down, because the rear got all kinds of loose with the oil all over. Scarier still- how much is left in my engine!!!!!

So yeah, trying to find out why the hell oil pressure would build up enough to ...drain the sump out of what looks to be the vent/relief line. All the gaskets and hoses look fine.. All I know is I ve got no oil and I dont feel comfortable just refilling it and cranking her up until I figure this out.
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post #2 of 14 (permalink) Old 05-30-2007, 06:38 PM
 
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Quote:
Originally Posted by VulcanXJ View Post
So yeah, cruising home after a nice ride around the lake not flogging the bike that hard just riding some twisties as well as the Big vulcans do. About a half mile or so from the house I start noticing that the chatter from the carbs is louder than normal, shortly after I slow down and see/smell oil burning off the exhaust. Luckily I slowed down, because the rear got all kinds of loose with the oil all over. Scarier still- how much is left in my engine!!!!!

So yeah, trying to find out why the hell oil pressure would build up enough to ...drain the sump out of what looks to be the vent/relief line. All the gaskets and hoses look fine.. All I know is I ve got no oil and I dont feel comfortable just refilling it and cranking her up until I figure this out.
I am just now getting into bikes, but the first thing I would guess if it were a car would be a PCV valve. Positive crank (pressure) ventilation valve. Basically the pistons moving up and down with eventually pressurize the crank case. This valve allows the pressure to be released without draining oil. If this valve goes bad it usually forces oil out of seals, but with about any thing else in this world it has the tendency of traveling the path of least resistance.
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post #3 of 14 (permalink) Old 05-30-2007, 06:45 PM
 
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There should be a hose that goes from the crankcase (usually on the rear on older bikes) to the air box. It may be disconnected.
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post #4 of 14 (permalink) Old 05-31-2007, 04:04 PM Thread Starter
 
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Also I found that the 2003 Vulcans had a recall thats still out on them, Basically the original oil filters sucked, so on a cold start the oil pressure could build up and deform the seal on the oil filter. However this is a new oil filter with only about 500 miles since the change.

I still trying to verify exactly where the leak is from, going to continue cleaning and checking everything I know how.
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post #5 of 14 (permalink) Old 05-31-2007, 05:17 PM
 
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I use to be an electronics technician. One of the first things they taught us about troubleshooting is to check the last thing you did. You changed the oil 500 miles ago. Check your filter and drain plug to make sure they're tight. When you're cleaning up the oil, also look for the source. If you can't find the source, then fill the crankcase and run the engine, looking for the source while the engine is running. You may need to put a few miles on it or rev it up, but you should be able to find the leak.
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post #6 of 14 (permalink) Old 06-01-2007, 01:17 AM
 
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Originally Posted by Captain Morgan View Post
I use to be an electronics technician. One of the first things they taught us about troubleshooting is to check the last thing you did. You changed the oil 500 miles ago. Check your filter and drain plug to make sure they're tight. When you're cleaning up the oil, also look for the source. If you can't find the source, then fill the crankcase and run the engine, looking for the source while the engine is running. You may need to put a few miles on it or rev it up, but you should be able to find the leak.
Never thought about that. But it makes perfect sense.



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post #7 of 14 (permalink) Old 06-02-2007, 09:03 PM
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I'm with capt on this.

That is why I never suggest doing multiple mods or maintance to a motor at once. Cause then if it runs like poo... you don't know what screwed it up.. so then you start just throwing parts at it.




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post #8 of 14 (permalink) Old 06-04-2007, 04:21 PM
 
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A good way to spot where leaks are coming from is by cleaning your engine and then spraying on some spray deoderant. the kind that is powdery and then running the bike it shows where your oil is coming from by giving you a white background....just something I found somewhere...
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post #9 of 14 (permalink) Old 06-05-2007, 02:26 PM
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That is a great idea... make a mess but it would work.




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post #10 of 14 (permalink) Old 06-10-2007, 12:09 AM Thread Starter
 
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Thanks for the advice, so far everything points to the filter being the wrong type, but still being very cautious with it before I do much more than the idling around the block than I ve managed I ll have to check it over and still possibly have a dealer look at it(since its a recall checkup anywho)
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post #11 of 14 (permalink) Old 06-23-2007, 02:13 PM Thread Starter
 
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Resolution

So the Oil Filter O ring did blow out, Fixed that up and so far leak free. However the knocking or pinging at idle seems louder than normal particularly up front. Going to start working on that today. Probably try and warm it up and run some seafoam in the fuel see if maybe its carbon buildup.

Based on another forum it looks like I may have been riding in too high of a gear for the engine majority of the time. Guess that whole highest gear best mileage would be a wives tale and potentially damaging.
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post #12 of 14 (permalink) Old 06-23-2007, 02:26 PM
 
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A ticking noise up front could be an exhaust leak. That is what mine recently started doing.
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post #13 of 14 (permalink) Old 06-23-2007, 02:57 PM
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Many people don't know or understand that lugging the motor is actually way worse than banging it off the rev limiter.

Consider what the rev limiter is. It is above the max "power making" RPM but below "damaging RPMs". So other than sounding like a moron it doesn't hurt anything.

Lugging on the other hand can do al kinds of things. You are basically pouring in too much gas than what the motors RPMs require. So you can do all kinds of bad. Least being foul plugs. Medium, wash down the cylinders with gas past the piston rings. Worse, leaving the gas in the oil and running the oil too long permenately scarring the cylinder walls.




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post #14 of 14 (permalink) Old 06-23-2007, 06:40 PM
 
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Lugging can also cause premature bearing failure on not only the rods but also the crank.

(To find if your lugging the engine here is an easy test. Hold the throttle still and drop down 1 gear. If you start accelerating then you were lugging.)
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