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Search results

  1. R

    GS850GL plea for help - bike won't pull past 5000 rpm

    I went with the factory spec'd 115 mains. I've also now ordered a new set of pilot jets just so I can get the carbs back to original. Once I get those I'll need to rebalance and everything should be perfect just in time to park the bike for winter :(
  2. R

    GS850GL plea for help - bike won't pull past 5000 rpm

    Okay, got new main jets. The bike is almost 100% now. It runs great at higher rpms but doesn't pull as well as before up to 4K rpm. I'm going to tweak the air screws to see if that makes a difference. Also the vacuum valve in the petcock seems to be functioning as it should now. My theory is...
  3. R

    GS850GL plea for help - bike won't pull past 5000 rpm

    I came with an inline K&N fuel filter. I swapped it for a much larger one with no change. Vacuum diaphragms all look good and are in the right way. As for handling the fuel flow - Suzuki designed the bike this way - I presume they knew what they were doing and the bike as designed was able to...
  4. R

    GS850GL plea for help - bike won't pull past 5000 rpm

    When the engine goes above 5k under light throttle it sounds reasonably normal but giving it more throttle does little but cause the stumble. I've nearly convinced myself that the issue is with the main jets. I may have messed them up when I cleaned the carbs. I'm ordering a new set so will...
  5. R

    GS850GL plea for help - bike won't pull past 5000 rpm

    I can get it to rev over 5K under light load - like down a hill. It caps at around 5 only while accelerating. My bike has the electronic ignitor - no points. Plugs are over the pilot circuit. As I mentioned the bike pulls strong without the air filter so timing should not be an issue.
  6. R

    GS850GL plea for help - bike won't pull past 5000 rpm

    I don't have sufficiently sized testicles to keep the throttle pinned when the bike is begging for a shift...
  7. R

    GS850GL plea for help - bike won't pull past 5000 rpm

    I just had another idea that might be my issue - I'm hoping that someone that knows a lot about carbs and jetting might be able to chime in. When I cleaned the carbs I had purchased a cheap carb kit from Amazon but tried to use as many of the stock pieces as possible. What I used from the kit...
  8. R

    GS850GL plea for help - bike won't pull past 5000 rpm

    I just ran a bit of an experiment. Took the bike for a spin without the air filter and then with the air filter noting where and when the performance faltered. Without the filter the bike struggled to rev to 5K rpm under load - but once it got to 5K it pulled hard and rocketed to red line...
  9. R

    GS850GL plea for help - bike won't pull past 5000 rpm

    Thanks for the reply - I did a pretty thorough check for vacuum leaks and cannot find any including the fittings on the carb and petcock. The bike runs perfect all the way up to about 5K rpm when it doesn't. My understanding of the mikuni cv carbs is that the pilot screw is only used to meter...
  10. R

    GS850GL plea for help - bike won't pull past 5000 rpm

    I had the thought last night that the issue could also be that the bike isn't getting enough air. I just took it for a spin with the air filter out and amazingly the top end is better. I've been so fixated on fuel since that's what was totally messed up that I didn't even consider that it might...
  11. R

    GS850GL plea for help - bike won't pull past 5000 rpm

    the issue exists on PRI as well.
  12. R

    GS850GL plea for help - bike won't pull past 5000 rpm

    The plugs over the pilot jets are new and sealing as they should. Unfortunately I don't have a timing light but also the bike doesn't have points so not sure how to verify timing advance.
  13. R

    GS850GL plea for help - bike won't pull past 5000 rpm

    Hi all, I am not the type to ask for help but I'm about to drive my bike into a lake... Back story and the problem: I bought a 1982 GS850GL (19,000km) earlier this summer that had been parked since 1992. I was told it was 100% functional when it was put away and stored indoors for most of that...
  14. R

    New member and 1st time GS owner

    Hi all, I just picked up a 1982 GS850GL. It was last run in 1992 so needless to say it needs a lot of work before it can hit the road. The previous owner said everything was working when he parked it so I'm optimistic that a fuel system cleanup should be enough to fire it up. Then before it hits...
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