reelimpatient
New Member
I had some bogging in the low end RPM range between 2000-3000 RPMS. I decided to pull the carbs and clean and inspect them for trash and worn diaphrams. I cleaned them and put them back on and adjusted them per Mikuni's factory settings and still have low end bogging. It does scream above 4000 rpms and now runs up to 6000 rpms whereas before it would only turn 5500.
It has new plugs, runs premix and compression is @ 175 per cylinder.
All filters are clean and have been checked.
After that, I ordered a carb rebuild kit and
Totally rebuilt carbs, replaced main jets and needles, springs, orings, check valves, rubber gaskets etc. Was real careful about it being clean and putting it back together correctly.
Replaced gray fuel lines with new.
Spent an hour or two on lake Saturday trying to dial it in, and now boggs badly at 3000-4000 rpms.
0-3000 rpms seems to run fine, beyond that, it will bog and die if I try to accelerate. I can sometimes feather the throttle and get it to jump past the bog to 4000 rpms and it will then take off like a rocket, and runs strong up to 6700 WOT.
What the heck can this be? This is driving me crazy and I want it fixed.
Runs premix and has great compression. Come on Pro's I know you guys have seen this before.
Thanks for any help !
It has new plugs, runs premix and compression is @ 175 per cylinder.
All filters are clean and have been checked.
After that, I ordered a carb rebuild kit and
Totally rebuilt carbs, replaced main jets and needles, springs, orings, check valves, rubber gaskets etc. Was real careful about it being clean and putting it back together correctly.
Replaced gray fuel lines with new.
Spent an hour or two on lake Saturday trying to dial it in, and now boggs badly at 3000-4000 rpms.
0-3000 rpms seems to run fine, beyond that, it will bog and die if I try to accelerate. I can sometimes feather the throttle and get it to jump past the bog to 4000 rpms and it will then take off like a rocket, and runs strong up to 6700 WOT.
What the heck can this be? This is driving me crazy and I want it fixed.
Runs premix and has great compression. Come on Pro's I know you guys have seen this before.
Thanks for any help !