CB400 SF Version S - Not revving high
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CB400 SF Version S - Not revving high
Hello, I'm new to this forum aswell as the motorcycle scene.
I recently bought a 2000 Honda CB400 SF Version S, the only aftermarket thing on it is a Yoshimura exhaust and the previous owner removed the stock speedometer to install a Chinese sheitty one. The bike will idle perfectly and rev smoothly up until 4-5k. After that the bike will not rev higher it sputters and acts as if its on a rev limiter allowing me to hit only 85-90kmh on 6th gear.
The carbs have been cleaned and taken care of by a mechanic 2-3 days ago but it still has this issue.
Doing some research I found out that it may be the CDI Box, aftermarket speedo. I'm asking here if anyone ever had an issue like this so I can save a few bucks.
Thanks in advance!
(For anyone asking my mechanic is having surgery and im not able to take it back there for 2-3 weeks so im trying to see if its something i can fix on my own)
I recently bought a 2000 Honda CB400 SF Version S, the only aftermarket thing on it is a Yoshimura exhaust and the previous owner removed the stock speedometer to install a Chinese sheitty one. The bike will idle perfectly and rev smoothly up until 4-5k. After that the bike will not rev higher it sputters and acts as if its on a rev limiter allowing me to hit only 85-90kmh on 6th gear.
The carbs have been cleaned and taken care of by a mechanic 2-3 days ago but it still has this issue.
Doing some research I found out that it may be the CDI Box, aftermarket speedo. I'm asking here if anyone ever had an issue like this so I can save a few bucks.
Thanks in advance!
(For anyone asking my mechanic is having surgery and im not able to take it back there for 2-3 weeks so im trying to see if its something i can fix on my own)
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Re: CB400 SF Version S - Not revving high
dead forum?
- JZH
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Re: CB400 SF Version S - Not revving high
I wouldn't go that far, but there are very few NC39 owners on here in the first place (I'm interested in them, but I don't own one).
The obvious suspect would be the cheap Chinese clocks. Unfortunately, due to the rarity of the bike in the UK, it will be difficult to find a spare set of clocks to replace them, but you may find some in Australia or Japan. It does sound like some kind of compatibility issue between the OEM PGM-FI unit and the aftermarket clocks.
Ciao,
JZH
The obvious suspect would be the cheap Chinese clocks. Unfortunately, due to the rarity of the bike in the UK, it will be difficult to find a spare set of clocks to replace them, but you may find some in Australia or Japan. It does sound like some kind of compatibility issue between the OEM PGM-FI unit and the aftermarket clocks.
Ciao,
JZH
- Mansie
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Re: CB400 SF Version S - Not revving high
Have a look at the following discussion:
http://www.hondacb1.org/forum/index.php?topic=4817.0
http://www.hondacb1.org/forum/index.php?topic=4817.0
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Re: CB400 SF Version S - Not revving high
Thank you both so much! It was the cheapy Chinese gauge. i connected the blue-orange wire with a 12+V wire and the bike is running great now.
Thank you!!!
Thank you!!!