High Fuel Consumption - Honda Rebel Forum
 
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post #1 of 5 Old 01-06-2020, 03:06 AM Thread Starter
haf
 
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High Fuel Consumption

I have noticed high fuel consumption around 7-8 Lt /100 Km. (1.8-2.1 Gallons/60miles)

I keep higher idle with enricher 1800-2000RPM because engine dies if enricher is fully closed (most probably idle valve in carburetor needs cleaning) but apart of this what else I have to check?

1996 Honda CMX 250
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post #2 of 5 Old 01-06-2020, 07:09 AM
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I would clean the carburetor thoroughly and see if that doesn't help.

Keepin' all the left over parts. Gonna use 'em to build another bike!

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post #3 of 5 Old 01-06-2020, 04:19 PM
 
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Operation of Idle port as well as Bypass and Off Idle ports is governed by the idle jet which feeds all 5
symptoms indicate idle circuit problems for sure..
There is a micro screen inside idle jet, Don't use wire or probe to clean jet, screen damage will result..
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post #4 of 5 Old 01-13-2020, 12:55 AM Thread Starter
haf
 
Join Date: May 2018
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High Fuel Consumption

Quote:
Originally Posted by SoakedKarma View Post
Operation of Idle port as well as Bypass and Off Idle ports is governed by the idle jet which feeds all 5
symptoms indicate idle circuit problems for sure..
There is a micro screen inside idle jet, Don't use wire or probe to clean jet, screen damage will result..


Thanks, can you please explain where those idle port located? In the idle jet? And how Those micro screen can be cleaned?
Should I have to replace the idle jet?

1996 Honda CMX 250
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post #5 of 5 Old 01-13-2020, 10:19 AM
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There are two main methods of cleaning a carb. Soak it in Berrymans Chem Dip for 2-7 days, or run it through an ultrasonic cleaner. Do not put any rubber or plastic parts in Chem Dip as it will destroy them. Chem Dip is available at WalMart and auto parts stores. After soaking/ultrasonic cleaning, rinse everything thoroughly with water and use high pressure air to blow out every orifice on the carb and jets. Canned air doesn't have enough pressure for this; use an air compressor. Depending on how dirty the carb is, it may take several cycles of soaking in Chem Dip before the carb is clean. Ultrasonic cleaners do the job in an hour or less. Carb spray isn't powerful enough to clean stubborn deposits.

You don't have to worry about where the ports or microscreen are following this protocol, as it will clean them. Folks get into trouble forcing metal objects through the jet ports in an effort to manually remove deposits.

Keepin' all the left over parts. Gonna use 'em to build another bike!

'01 & '09 Rebel 250, '06 Ninja 250, '89 VN 750
Putting your bike year and model in your signature helps others help you!
Here's how: https://www.hondarebelforum.com/f19/...re-121087.html
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