engine drops a beat

[NATES]

Sure could use some help....I have a 2000 yam. 200hp ox66, that has always been great. This year a problem started, when running along just fine about 4k rpm's I will get a momentary burp, a fraction of a second & then it's gone, but it keeps happening. any ideas?

2000 150 ox66 shutting off at 5100 rpms

Your problem sounds similar to mine. any luck finding out your problem?

[jb123]

clean vst filter and sump.

will do. thanks