Desperately need help on 87 450L

[pearljam724]

Looking to buy a petcock rebuild kit for an 87 GS450L. I cleaned my carbs a few months ago. After putting everything back together, I am having seldom strange issues. Sometimes the bike is had to start, regardless it runs fine. But, last night the bike was idling at a gas station and I noticed gas leaking from the air box breather down onto the ground. Before I tore the carbs apart everything ran fine. I believe the gas may be coming from the petcock vacuum line or main line. I don't know. Does this petcock kit look to be correct ? And does my petcock look to be original ? Mine seems much smaller than the ebay petcock kit link I posted. Any other reasons for gas to be coming out of the airbox breather ?

http://www.ebay.com/itm/250722871156?ssPageName=STRK:MEW X:IT&_trksid=p3984.m1438.l2649

[pearljam724]

Another pic of my petcock.

[tom203]

...... But, last night the bike was idling at a gas station and I noticed gas leaking from the air box breather down onto the ground.Before I tore the carbs apart everything ran fine. I believe the gas may be coming from the petcock vacuum line or main line.

You might indeed need new petcock, but it's also likely that your carb work "disturbed" something ( float height/ needle seat?)
Your petcock looks very similar to mine - see link below (44 mm bolt spacing ??, fuel outlet faces rear). Personally, I'd just replace the whole petcock for $45 and rule it out as a problem, then move on to carbs.Lots of places to buy new petcock

http://www.georgefixs.com/servlet/the-148/SUZUKI-GS450%2C-GS650%2C-GS750%2C/Detail