well i know exactly what you're talking about since my ZRX also has done this.
from what ive seen on the www.zrxoa.org board im on there are a couple things that can cause this.
1. gas tank CAP VENT gets clogged
2. the vent lines to the carbs get pinched
3. the vent lines that hang down under the bike are in the air stream and cause problems in the atmosphereic pressure
4. ya have a problem with your petcock (if its vacumn operated)
next time this happens pop your gas cap and see if you hear a woosh/hiss of gas vapors escaping.
from what ive seen on the www.zrxoa.org board im on there are a couple things that can cause this.
1. gas tank CAP VENT gets clogged
2. the vent lines to the carbs get pinched
3. the vent lines that hang down under the bike are in the air stream and cause problems in the atmosphereic pressure
4. ya have a problem with your petcock (if its vacumn operated)
next time this happens pop your gas cap and see if you hear a woosh/hiss of gas vapors escaping.
