4k

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  1. J

    Another 4k rpm problem...

    Hi everybody, I went for a ride this morning and then stopped the bike for about 15 min. Everything was fine. When I wanted to drive back home, I could not accelerate past 4k rpm. The bike was accelerating just fine below that rpm but then at 4k she felt like she was struggling, unable to go...
  2. R

    Need help! Bike is terrible over 4k rpm

    Hi, I am a new vmax owner from Sweden. Sorry if my English is not perfekt! I bought the bike a week ago and it run perfekt on the 200km I drove it home. It was a dream! The best bike I ever ridden! When I got home I cleaned the air filters because they looked really dirty and the crankcase...
  3. C

    4K WOT Stumble

    Hello! I've been running a stage 7 setup with vboost eliminated for some time. WOT just fine. I installed the vboost assembly recently, without making any other changes, and now have a bad stumble at 4K WOT. Should i drop or raise the needles?
  4. P

    Bike wont rev past 4k, and other weird issues.

    Hi fellas, wondering if someone is able to help me solve the issue I'm having with my problem. The bike just came back from the vales adjusted. Was sitting in the garage waiting to get the scoops and relays back in place. Recently changed fuel filter, spark plugs. Took my fuel pump apart and...
  5. M

    New Spark Plugs...mis-firing at 4k rpms now

    I just took my spark plugs out of my bike and took one to the auto parts store. They replaced them with the same ones. The old ones were GNARLY...pretty black on the tip, and rusty at the top where you put the wrench. It seemed to idle a little better, but when I get up to 4,000 RPMs, the...
  6. 65fury

    4k stumble!!!! Im stumped!!!

    WARNING LONG WRITE Well im still having a horrible 4k stumble, regardless of gear im in anything over 1/4 past 4k and it falls on its face and stumbles its way to 6k where it pulls hard. I have stock needles, but the PO drilled the slides. Ive tried shimming the needles with .4mm...
  7. naughtyG

    nice looking '90 got bid to over 4k...

    ...but didn't meet the reserve! hmm. I would prolly have sold it for that much. :confused2: http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=180511680176&ssPageName=STRK:MEWAX:IT
  8. ghostntheshell

    a little more affordable.. 4k less and I'm buying!

    http://cgi.ebay.com/ebaymotors/2009-Yamaha-VMAX-Very-Low-miles-Like-New-Very-Fast_W0QQitemZ270553767814QQcmdZViewItemQQptZUS_motorcycles?hash=item3efe42df86 $15 500...
  9. A

    4k Test Sound ?

    Hey all, thought I'd post this after reading up on the many post on carb tuning here. I bought a 04 about two months ago which needed the carbs cleaned severly so I pulled the carbs and noticed the carbs were jetted. Heres what I'm running right now. Cobra exhaust (slip on's ) appears to be...
  10. M

    Hi...Intermittent spark on #4 at 4k

    Hello from poor old bankrupt England!! I'm a new member of this forum and it seems like a mine of info - congrats! My 99 Max was running very well on dynojetted carbs and a full Hindle system, until I noticed a slight backfire - not much but real annoying. I've cheked it out to #4 cyl. I changed...
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