Will it ever end!!!!!

I was getting ready for church this morning. The oil was changed about 4 months ago. I started the bike, and it fired right up(as it has for the past week) I have put over 60 miles on her, this week, with no problem. Got ready to take off and notice a puddle of oil coming from air box. :? I put it on its side side, and took the seat off. Looking in the air box: When idealing it is good, when I rev her up, it is good, as the ideal is coming back down, it is shooting oil through the crankcase breather line and in to the air box. It is not just "spitting" oil, there is a stream the weidth of the line sprying in there. I have never had oil in the filter box. What the heck would case this. When I rebuilt the carbs, I set the floats to proper levels, the petc**k has been rebuilt.

Everything was running great, unbelievable power. I checked the sparkplugs, and they where clean. No oil on top end, so I am guessing thats a plus. Any help would be greatly appricated.

 

Sounds like your crank case is full of gas & oil. Did you look to see if it was overfilled? One of my 750's did that. It was a bad petcock diaphram.

 

My guess would be a petcock and/or float needle that isn't shutting off and you got a whole bunch of gas in the crankcase effectively "overfilling" the oil and causing it to pump out the breather. Either that or it had WAY TOO MUCH oil in it to begin with and has been puking it out all along but you just didn't notice until now. Put the bike on the sidestand, you should see nothing in the oil sight glass. Stand it up, you should see the oil come up to just above the top mark. If you're seeing oil in the sight glass when the bike is on the sidestand, there is too much oil (or gas/oil mix) in the crankcase.

 

I looked in to the "oil window" at it is in the middle. What does the diaphram do, in this situation? I know the diaphram opens when vaccum is applied, to allow the fuel to get to the carb bowls. I just rebuilt the petcock, and it has work for a week now.

Just went out side, and the oil does smell abit like gas. I guess I will go out tomorrow and try and find out what the root of the problem is. Thanks for the quick response.

 

The little rubber diaphram in the fuel petcock went bad on mine and the gas stayed on and my needles and seats in the carbs did not hold. It filled my motor up with gas. I fired it up and oil came out of the air box drain tube all over the back of the motor and onto the ground. Lucky I was not Riding it like that, oil under the back tire would have been slick and may have caused me to dump the bike.
Your Oil level in the window looks ok unscrew the oil fill cap and look in there and see what that looks like. Wonder if you have gas floating on top of the crank case oil.

 

Just unscrewed the oil cap, It smells like the gas tank. I checked the gas tank, and I am about 3/4 gallon to a gallon short on what should be in there. I am guessing it is a new petcock now. Thanks for everyones quick response.

 

Drain the oil and see what you got going on you might have just a bad rebuild kit. Chacal has good quality kits and new petcocks if you want.

 

When I rebuilt my petcock the first time I forgot to put the little spring back in. Check your workbench to make sure it didn't roll to the back or something and you missed it on re-assemble.

 

Many times the rebuild kits won't "fix" a petcock because the body of the petcock has been damaged. You have to inspect the 30-degree bevelled seat that is machined into the petcock body (where the o-ringed diaphram "plunger" actually seats itself into the petcock body). If that seat is damaged, gouged, distorted, or scratched in ANY way, the petcock will always do the drip-drip-drip when the engine is off, even though your petcock has been "rebuilt" properly.

If your float needles also leak, that drip-drip-drip will flood your carbs, and then your crankcase will fill up with gas, and if you don't remedy that situation, you'll end up driving over your crankshaft..........

New petcocks, replacement fuel valves, and in-line on/off valves are available from me to help you solve those problems.........

 

Good day guys, I just got done with a day of flushing out the crank case, and looking in to the petcock. It seemed all good, till after studying it for a few minutes. The spring I put back in was the bad spring. It was compressed and out of wack. Put the new spring in, replaced oil and oil filter. Once I put it back together, I ran it up and down the street. Had a good 30 minute ride. Came back, pulled the fuel line and placed a coffee can under it. Went back out about 2 hours later, and to my dismay, The gas is still dripping. I checked to see if I had any responses on these topic. After reading them, I took the petcock back down, and looked over every square inch of it. The "seat" where the diaphram plunger sits is a bit "scuffed" up. I guess it will be a new petcock soon.

In the mean time, I have put the old one back on, and installed a standard on/off ball valve. It is one of those chrome ones you would see on an ice machine, or something of that nature.

Thanks a million. I thought this was fixin to intell a tare down of the case, again.

 

New here but have been lurking for a long time.

I just gave up on the stock petcock and replaced it with an ex500 petcock. the bolts and all the gasket seal surface is the same but it has one important feature that I love. IT HAS AN OFF SETTING!!! I just turn off the petcock off when it is sitting. It helps a great deal. Now the primary is basically the reserve setting and the ON is the same as the stock petcock.

I am actually going to pull the carbs again!!! The number 3 carb drips a little when left on primary/ reserve. Then I am going to see where it is coming from because the hose(checking fuel level) does not show that the carb is overflowing.

I am really starting to think that the carbs leak from other places. I suspect the enrichment circuit.

Ciro