Not so “Green,” No-Drop Idle Mixture Adjustment Method

I find the factory recommended idle mixture screw setting specs to be very close to ideal. They are listed here for the Honda GL1000.

Idle FUEL Mixture Screw on Honda GL1000

I do usually richen them up an extra 1/8 to 1/4 turn (out) to compensate for the leaner modern “gasoline” which is diluted with ethanol in most US markets.

But sometimes, you just need an excuse to do some high performance tuning on your bike! 🙂 

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Flooding Issues on Vintage Hondas

Flooding is a common problem in vintage Hondas – especially on bikes that don’t get run much.  Flooding can be just a minor aggravation …like hard starting or poor fuel mileage. But, it can also lead to catastrophic problems such as severe engine damage or even a fire!  Flooding issues should not be ignored!

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January 2018’s Featured Products

Happy New Year, Goldwing lovers!

Looking back on 2017,  you probably put a healthy number of miles on your Honda. You know this is right up the Randakk’s alley when we say that you may be due for a carb cleaning/rebuild.

  • Is your motorcycle hard to start?
  • Is it running a bit off-kilter?
  • When you dial the throttle, are you getting the desired performance?
  • Do you ride with the choke on? (this means you have a clogged pilot jet)
  • Sluggish acceleration?
  • Bad fuel economy?

These are all signs that your bike is in need of some carburetor love. In most scenarios, there’s only really one way to see if your carbs are due for a complete rebuild: pull them off the bike and take a look inside. And since you have them off and dissembled, you might as well do your future self a favor and rebuild them now.

January’s Featured Products are dedicated to those precious carburetors, everything from the all-inclusive Randakk’s Carb Rebuild Kits to the e-clips.

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One in a Million! Allan Zahrt’s Million Mile GL1000

How many million mile motorcycles are there?  Answer below. Read on!

July 2017

Allan Zahrt with his Million Mile GL1000!

In the early seventies Honda launched without fanfare an ambitious project. Internally, Honda had a bold plan: to build the world’s best motorcycle. Not just the best Japanese motorcycle  – the best motorcycle available anywhere in the world. Period! The eventual result of this project was revealed to the world at the Cologne, Germany International Motorcycle Show (INTERMOT) in October, 1974 as the GL1000.

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“Insensitive” Idle Mixture Fuel Screws?

I often field this common complaint: 

“I’ve noticed that turning the idle mixture screws nets different results on each of the individual carbs on my Honda GL1000:

  • #1 will kill the motor if turned all the way in
  • #3 has NO EFFECT on engine speed regardless of where it is set
  • #2 has what might be considered a “normal” effect
  • #4 has only a very slight effect if any at all

What does this mean????? I’m a bit confused?  Help please!!!!”

GL1000 Idle Fuel Mixture Screws

GL1000 Idle Mixture Fuel Screw

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The Single Most Common Carburetor Problem (Clogged Pilot Jets) and How To Fix – by Ari Henning

I’m happy to share this excellent video tip created by Ari Henning of Motorcyclist Magazine. Ari is a notorious AHRMA road-racer and all-around swell guy!

This is excellent information.

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Randakk’s Jetting Advice For Vintage Honda CV Carbs

Whenever I’m asked about “jetting” issues on vintage Honda carbs – here’s my strong advice:

JoukoCarbs3

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Honda Float Bowl Drain Screw Placement

Honda GL1000 float bowl drain screws will be difficult to loosen for periodic maintenance if the float bowls are installed onto the wrong carbs.

There are specific left/right carb bowls plus a special bowl for carb #1 (with vacuum hose barb). The bowls will bolt up and run fine on the wrong carbs, but it will be hard to get a screwdriver blade onto the drain screws when the carbs are installed on the bike.

Carb Bowl Drain Screws

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Early vs. Late Carb Mixing and Matching / Honda GL1100 Carbs on Honda GL1000? + Honda GL1000 Carb Specs

You might consider this item: Randakk’s GL1000 Carb Rebuild Video

GL1000 Carb Interchange Issues

JoukoCarbs3

Honda GL1000 Carbs Restored by Randakk Customer Jouko Tomminen of of Lahti, Finland

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Honda GL1000 Floats 101

Randakk now offers GL1000 and GL1100 Float Setting gauges. Details here

I show how to set floats in the video: Randakk’s GL1000 Carb Rebuild Video

Setting Float

Note: The procedure for setting the float levels on GL1100 carbs is essentially the same as the one for GL1000 carbs described below. The only difference is that the float level spec for the GL1100 is 15.5 mm instead of 21.0 mm.

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