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Thread: first valve adjustment scares.

  1. #1
    Junior Member the weiand one's Avatar
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    first valve adjustment scares.

    Finally finished everything. Started it up. Actually started up real strong. But idles at a noticeably higher idle than normal. Could just adjusting the valves increase idle rpm. ?

  2. #2
    Senior Member macbig2k1's Avatar
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    Short reply: No
    Adjust the idle rpm, when the engine is warm.
    fishguy likes this.

  3. #3
    Senior Member RockyTFS's Avatar
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    Quote Originally Posted by the weiand one View Post
    Finally finished everything. Started it up. Actually started up real strong. But idles at a noticeably higher idle than normal. Could just adjusting the valves increase idle rpm. ?
    TW's idle seems to move around a bit on a random basis, at least mine does....I just adjust it whenever it needs it.
    Rocky
    2018 TW200
    2014 BMW R1200GS LC

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  5. #4
    Junior Member bigbear's Avatar
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    Is this problem valve adjustment related?
    Input appreciated: Have 5 riders in a Big Bear Lake TW200 riding club. All the bikes run fine except my 2012..
    Situation: When coming down any reasonably steep off road hill in neutral at slow speeds (2-7) mph.
    Symptom: Sometimes in Neutral she dies, and most times in Neutral the idle speed goes much much higher than regular idle speed.
    As soon as I start approaching level ground the idle returns to normal?
    This happens about 90% of my down hill riding time.
    Bike has 639 original miles, use 87 Octane with Stabil, riding at 8000 feet of altitude, stock carb, stock exhaust, clean new plug ( did before new plug) clean oil, properly chain tension
    Was told that they run lean anyway so no carb adjusting done.
    Valve Adjustment, Carb Float, suggestions really appreciated

  6. #5
    Senior Member dabsdog's Avatar
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    8000 ft might have something to do with it. Why do you run in neutral going down hill? (I might learn something)

  7. #6
    Senior Member dabsdog's Avatar
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    Another thing. Going down a steep hill might shut off the float valve due to the angle. Make sure the carb vent is OK.

  8. #7
    Senior Member fishguy's Avatar
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    Original post: No, valve adjustment alone shouldn't change the idle. Warm up the TW. Adjust idle. Think about adjusting pilot screw to leaner.

    2nd post: Downhill in neutral? Not me. I select a lower gear as required and use engine compression along with brakes as needed.

    I think your carb float is sticking. Try Lucas Fuel System Cleaner or SeaFoam. Stabil isn't keeping up with all the crap they are putting in gas these days. Startron claims to "eliminate" and "neutralize" with "enzymes" the effects of ethanol. Lots of snake-oil but it does work. VERY expensive, tho.

  9. #8
    Senior Member RockyTFS's Avatar
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    Quote Originally Posted by fishguy View Post
    ...... Startron claims to "eliminate" and "neutralize" with "enzymes" the effects of ethanol. Lots of snake-oil but it does work. VERY expensive, tho.
    It isn't "VERY expensive" if you buy the right bottle. One bottle treats 28 gallons and the same size bottle with a more concentrated mixture treats 128 gallons, but is only slightly more.

    Deceptive marketing, sure, but one 8 oz. bottle of that 128 gallon StarBrite will last me three years or more: STAR BRITE 93008 STAR TRON GAS ADDITIVE 8 OZ#

    Also at Walmart. You have to look carefully at the label, because otherwise the bottles look identical.

    I use it EVERY time I have to use Ethanol gas, and over the winter even with Non Ethanol gas. I run a couple ounces of Seafoam in about every fourth tank. Carb continues to operate perfectly at 10,000 miles.
    Rocky
    2018 TW200
    2014 BMW R1200GS LC

  10. #9
    Senior Member Padilen's Avatar
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    I'm doing it wrong ! I'm on my 3rd bottle of Star Brite in a year!

  11. #10
    Senior Member Padilen's Avatar
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    So while I was out in my pole barn I checked my bottle- 48 gallons. I like their math 1oz to 3 gallons of gas. So 3x8 is 24 how do they get 48? They retreat 6 old gallons of gas with 1 ounce. So 6x8 is the 48.

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