“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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Carb Cleaning (in situ lazy method)

You might consider Randakk’s GL1000 Carb Rebuild Video

Yamaha Carb Cleaner

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Fuel Filter Mounting Tips

Randakk’s High Performance Fuel Filters have many technical advantages and are super easy to install as demonstrated in this short video by by Shasta Smith – the Vintage Monkey.

More details on Randakk’s High Performance Fuel Filters here.

Replacing Throttle Shaft “Felts” on Honda GL1000, GL1100, GL1200, DOHC-4, CBX, CX500, etc.

Replacing Throttle Shaft “Felts” on GL1000, GL1100, GL1200, DOHC-4, CBX, CX500, etc.

Felt Replacement

Throttle Shaft Felt Replacement  (photo courtesy Aaron Williams of Dude’s Garage)

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More On Aftermarket Fuel Filters

Fuel filters are not included in Randakk Master Carb Kits. But, it would be a crime to redo your carbs and not take prudent measures to ensure a pure fuel supply! We recommend the OEM Honda filter as a high quality replacement unit for owners concerned about originality..

For others – we offer the Randakk High Performance Fuel Filter with sizes to fit virtually any carbureted motorcycle. Details here.

Typical EMGO Aftermarket Fuel Filter for Early ‘Wings…not available from Randakk.

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Problems with Aftermarket Float Valves

I get lots of emails like this one: 

“I purchased four “Napco Carb rebuild Kits” in addition to some parts from you like plenum seals, etc. I probably should have purchased your Master Kit. Anyway, 2 of the Napco float valves would not seat properly resulting in a lot of frustrating problems. With your recommendation, I cleaned and put the original Honda float valves back into the carbs. Problem Solved. Thanks!”Lee Korb – Raleigh, NC

Aftermarket Float Valve

Failed Aftermarket Float Valve

Photo courtesy Mike Nixon. All Rights Reserved 

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Honda GL1000 / GL1100 / GL1200 / CBX / DOHC-4 / CX500 & Variant Performance Parts

Build Sheet Details for Randakk’s Supercharged GL1000. Vintage Honda Performance!

This bike is now owned by a collector in Germany.

Portrait 3

Randakk’s RC-003 Supercharged GL1000 …Current Incarnation

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Old School Carb Cleaning Methods

If you’ve watched my GL1000 Carb Rebuild Video, you know that I’m strongly opposed to total immersion chemical carb cleaning methods. The very harsh ingredients in these “buckets of doom” are bad for your carbs, your health and the environment. The lubricating/sealing felts used on the throttle and choke butterfly shafts on GL1000 carbs are particularly vulnerable to such abuse.

Heaven forbid you were to carelessly dunk your GL1100 carbs in one of these buckets. Your air-cutoff valves as well as the accelerator pump would quickly be history if they were left in place. Sadly, GL1100 air cut-off valves and accelerator pumps are frequently ruined by indiscriminate use of carb cleaners (even with no dunking) due to their vulnerable locations.

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