mikuni full throttle
Thread Starter
|
6th Gear
Joined: Jun 2023
Posts: 11
Likes: 3
From: kieler wi
mikuni full throttle
Anyone able to run more than half mile at full throttle with a Mikuni vm34 on a servi before it falls on its face? Tried a lot of main jets with no help. Runs great otherwise.
Seasoned HDF Member
Joined: Nov 2006
Posts: 12,878
Likes: 5,449
From: la la land jerzey
No idea what you have for a petcock - but if its a OEM type screw in pull up - you have a china garbage one in it - original has a metal tip the china one has a rubber plug that falls off and clogs the works - then you stop the bike do all kinds of things and it starts again - then repeat
Thread Starter
|
6th Gear
Joined: Jun 2023
Posts: 11
Likes: 3
From: kieler wi
No idea what you have for a petcock - but if its a OEM type screw in pull up - you have a china garbage one in it - original has a metal tip the china one has a rubber plug that falls off and clogs the works - then you stop the bike do all kinds of things and it starts again - then repeat
Trending Topics
Seasoned HDF Member
Joined: Nov 2006
Posts: 12,878
Likes: 5,449
From: la la land jerzey
The feed into the float valve in race machines we in large the fitting and the carb body - you could have smaller then normal fitting fu cken china thanks again
They just open a tunnel in a major city under a large river - the vibes from the cars and trucks going through it the roof put 3 feet of water into the low spot in an hour they did not close it as they want the toll money - told everyone its a minor pipe crack < water poring in on the ceiling
They just open a tunnel in a major city under a large river - the vibes from the cars and trucks going through it the roof put 3 feet of water into the low spot in an hour they did not close it as they want the toll money - told everyone its a minor pipe crack < water poring in on the ceiling
HD Forum Stories
The Best of Harley-Davidson for Lifelong Riders
7 Surprising Harley-Davidson Products that Are Not Motorcycles
Verdad Gallardo
8 Best Harley-Davidson Motorcycles Ever
Pouria Savadkouei
10 Worst Harley-Davidson Motorcycles Ever
Pouria Savadkouei
Killer Custom's Jail Break Is The Breakout That Refused to Blend In
Verdad Gallardo
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?
Verdad Gallardo
Harley-Davidson Reveals Super Cool Cafe Racer Concept
Verdad Gallardo
Engraved Rebellion: Inside Bundnerbike's Glam Rock II
Verdad Gallardo
10 Motorcycles You Should Never Buy
Joe Kucinski
10 Things Harley-Davidson Needs to Fix in 2026
Verdad Gallardo
Thread Starter
|
6th Gear
Joined: Jun 2023
Posts: 11
Likes: 3
From: kieler wi
Hi John. Had time on weekend for bubble test. Had leaks and put in peek seals. Good to go now I thought. Road test with no improvement. Got an old fake vm34out to drill and tap for a bigger inlet. Do have the bigger needle and seat but broke one of the float pivot post off getting old one out. Gun shy about doing the same on good carb. Any more ideas?
Seasoned HDF Member
Joined: Nov 2006
Posts: 12,878
Likes: 5,449
From: la la land jerzey
Vent in the cap is not up to spec - this will creat a vacuum in the tank in a short while and stop fuel from getting too the carb
let it sit 3 or 4 min and its fine again for a while
unscrew the cap when it does it
let it sit 3 or 4 min and its fine again for a while
unscrew the cap when it does it