[Q&A] SBF CB400 Official Q&A Thread 2009 (PLS ASK YOUR QUESTIONS HERE!)

[autodesk]

[Q] Im riding vtec 3. When my bike is fully warmed up after riding for around 15mins, my bike began to backfire and lose power as if de bike is dying. My exhaust does not has the normal exhaust sound. ANd ive serviced my carb as i thougt the prob was with de carbs but de prob still exist. Anyone has this problem before? is it the plugs?

Edited December 28, 2012 by autodesk

[SparkerS1]

Does anyone using brembo rcs?any feedback?

 

http://www.singaporebikes.com/forums/showthread.php/346588-FAQ-and-Information-about-Honda-CB400-Revo-NC42

 

Brembo RCS19 Master Pump with Rizoma Brake Reservoir / Rizoma SS Adjustable Reservoir Bracket ; Better braking efficiency & feel, Least braking effort, ease of monitoring brake fluid level

[tankee1981]

Dear All

 

I have just acquired a 3rd hand Honda CB400 Spec 3. I have a few questions to consult, please advise.

 

1) There is this 'gurgling' sound at the coolant reservoir after i have off the engine and park the bike. Is this normal?

 

2) There is this ringing sound when i reach 100km/h and RPM 6.5 (but not at other speeds or RPM) near the front of the bike, what could be the possible reason.

 

3) Where can i get a windscreen for my bike, preferable Givi one other than LAB?

 

4) Where can i get a mesh for my radiator? No need design, just plain ones will do.

 

Many Thanks

[tiku]

Dear All

 

I have just acquired a 3rd hand Honda CB400 Spec 3. I have a few questions to consult, please advise.

 

1) There is this 'gurgling' sound at the coolant reservoir after i have off the engine and park the bike. Is this normal?

 

2) There is this ringing sound when i reach 100km/h and RPM 6.5 (but not at other speeds or RPM) near the front of the bike, what could be the possible reason.

 

3) Where can i get a windscreen for my bike, preferable Givi one other than LAB?

 

4) Where can i get a mesh for my radiator? No need design, just plain ones will do.

 

Many Thanks

 

1) sounds like boiling of coolant to me.. check for ripple mark on the cap of reservoir.. boiling should means coolant not circulating

 

2)ringing sound? vtec sound? check if pillion footrest loose, applies to me..

 

3) try unique motosports

 

4) try cmo.. u can rfq but don expect the price to be below 40.. unless u diy

[tiku]

Dear All

 

I have just acquired a 3rd hand Honda CB400 Spec 3. I have a few questions to consult, please advise.

 

1) There is this 'gurgling' sound at the coolant reservoir after i have off the engine and park the bike. Is this normal?

 

2) There is this ringing sound when i reach 100km/h and RPM 6.5 (but not at other speeds or RPM) near the front of the bike, what could be the possible reason.

 

3) Where can i get a windscreen for my bike, preferable Givi one other than LAB?

 

4) Where can i get a mesh for my radiator? No need design, just plain ones will do.

 

Many Thanks

 

1) sounds like boiling of coolant to me.. check for ripple mark on the cap of reservoir.. boiling should means coolant not circulating

 

2)ringing sound? vtec sound? check if pillion footrest loose, applies to me..

 

3) try unique motosports

 

4) try cmo.. u can rfq but don expect the price to be below 40.. unless u diy

[NaZ23]

Hi guys, just replaced new batt for my spec 1 on 8th dec. Previous replacment was 15mths ago. Then this morning bike cant even start. Last rode the bike last friday. Cant be 4 days of inactivity can drain bike's batt right?

 

Only hv volt meter and pivot voltage stabiliser tapped to the batt n i doubt these are batt suckers right?Possible that the shop did a lousy installation or gave me crap battery? Wonder whats my chance of getting free replacemnet if any...? Or cld it be somethg else that needs to be replaced? Thanks in advance!

[jayz]

Did they test ur rectifier?

 

If rectifier spoil, change battery also no use cos it wun charge the battery.

 

Sent from my GT-I9300 using Tapatalk 2

[NaZ23]

No they didnt. The mech actually asked me to remove the voltage stabilizer instead. Haiz...

[jayz]

So how ur bike now?

 

Try push start then ride to bike shop check loh. If cannot then tow bike. Or if u can jump start it...

 

Sent from my GT-I9300 using Tapatalk 2

[Ah Pek]

Hi guys, just replaced new batt for my spec 1 on 8th dec. Previous replacment was 15mths ago. Then this morning bike cant even start. Last rode the bike last friday. Cant be 4 days of inactivity can drain bike's batt right?

 

Only hv volt meter and pivot voltage stabiliser tapped to the batt n i doubt these are batt suckers right?Possible that the shop did a lousy installation or gave me crap battery? Wonder whats my chance of getting free replacemnet if any...? Or cld it be somethg else that needs to be replaced? Thanks in advance!

 

Either ur rectifier, rectifier connector or coil or all three or eother two koyak liao. Basically..ur new battery is not being chatge. Forget about ur voltmeter...it's useless and non accurate.

[NaZ23]

Dun hv the tools to jumpstart...think lan lan must tow. Dun feel like towing back to same shop coz i feel the mech there didnt do a proper and thorough job. Sucks man.

 

To Ah Pek...wah lao if really kena all 3 faulty sure very expensive sia the replacements. Any idea if this kind of problems got symptoms for us to prepare for servicing? And any good shops to recommend to replace at? Many thanks in advance...

[Ah Pek]

Dun hv the tools to jumpstart...think lan lan must tow. Dun feel like towing back to same shop coz i feel the mech there didnt do a proper and thorough job. Sucks man.

 

To Ah Pek...wah lao if really kena all 3 faulty sure very expensive sia the replacements. Any idea if this kind of problems got symptoms for us to prepare for servicing? And any good shops to recommend to replace at? Many thanks in advance...

In the first place, the mech should show ur reading of ur charging voltage after battery replacemwnt which is a 13.5v dc (at least) to 14.2v dc from a rev rvp range of 2k to 5k rpm. If non of this, means it's not charging. The connector of the rectifier can check urself...see if it's brownish burn (means contact point burn out due to hi-current)..replacement by shop cost around $35 if they do it. To chck rectifier, u need a good one to replace and chck charging voltage again..if reading is ok..means rectifier ok and coil is safe. If a good rectifier is replaced and ur charging voltage is screwed..means ur coil gone liao. Rectifier cost around $85 and coil $300+ to replaced. Replacing manageto coil no need to change EO. (some shop tell u must..than don't do there). Unique or Planet should be expertise in this area of work..or most of the advertiser here. The question here to u is only cost difference but again..have to think of rental overhead and quality type mechanic they employed as all these varies.

 

You can use a pair of jump start cables to start ur bike from ur neighbour car or friend's bike battery...or get someone to push from behind while enaging in 2nd gear and let off clutch to kickstart.

[ramsnake]

@Ah Pek, just to clarify:

If the magnet coil is faulty you may not be able to kick start by pushing. You can only do so if you're lucky in that the magnet coil can still generate enough current to spark the plugs but not enough t charge the battery. In my case, a section of magnet coil is burnt and I couldn't push start the bike. Even after jump starting with a car battery, the coil didn't produce enough power to spark the plugs. Thus, I couldn't ride the bike after jump start.

[Ah Pek]

@Ah Pek, just to clarify:

If the magnet coil is faulty you may not be able to kick start by pushing. You can only do so if you're lucky in that the magnet coil can still generate enough current to spark the plugs but not enough t charge the battery. In my case, a section of magnet coil is burnt and I couldn't push start the bike. Even after jump starting with a car battery, the coil didn't produce enough power to spark the plugs. Thus, I couldn't ride the bike after jump start.

 

"..You can only do so if you're lucky in that the magnet coil can still generate enough current.."...that's right. Just an interesting info..if the coil is ok and when bike can start, without a rectifier (assuming rectifier is bad)..bike can ride without one...LOL!..just that battery wont charge and provided battery is in good condition.

[ramsnake]

"..You can only do so if you're lucky in that the magnet coil can still generate enough current.."...that's right. Just an interesting info..if the coil is ok and when bike can start, without a rectifier (assuming rectifier is bad)..bike can ride without one...LOL!..just that battery wont charge and provided battery is in good condition.

 

(texttomakeup10charactersshit)

[NaZ23]

In the first place, the mech should show ur reading of ur charging voltage after battery replacemwnt which is a 13.5v dc (at least) to 14.2v dc from a rev rvp range of 2k to 5k rpm. If non of this, means it's not charging. The connector of the rectifier can check urself...see if it's brownish burn (means contact point burn out due to hi-current)..replacement by shop cost around $35 if they do it. To chck rectifier, u need a good one to replace and chck charging voltage again..if reading is ok..means rectifier ok and coil is safe. If a good rectifier is replaced and ur charging voltage is screwed..means ur coil gone liao. Rectifier cost around $85 and coil $300+ to replaced. Replacing manageto coil no need to change EO. (some shop tell u must..than don't do there). Unique or Planet should be expertise in this area of work..or most of the advertiser here. The question here to u is only cost difference but again..have to think of rental overhead and quality type mechanic they employed as all these varies.

 

You can use a pair of jump start cables to start ur bike from ur neighbour car or friend's bike battery...or get someone to push from behind while enaging in 2nd gear and let off clutch to kickstart.

 

Wow...alot of very useful and vital information there. Will take note n keep look out when i go servicing. Thanks alot Ah Pek!

[wht3fr3]

Anyone knows if this E.O is semi syn or fully syn?? http://img.tapatalk.com/d/13/01/06/sy8yha2a.jpg

 

Sent from my GT-I9300 using Tapatalk 2

[justforme]

hi guys recently i noticed that my front brakes is starting to rub against the brake plates and giving off some rubbing sound. i have done bleeding the brake fluid on the brakes and it is now filled with fresh DOT 4 brake fluid but it doesn't solve anything too. anyone has any idea what i should do?

[wht3fr3]

hi guys recently i noticed that my front brakes is starting to rub against the brake plates and giving off some rubbing sound. i have done bleeding the brake fluid on the brakes and it is now filled with fresh DOT 4 brake fluid but it doesn't solve anything too. anyone has any idea what i should do?

 

check if ur front brake disc is too thin or ur brake pad is wore out..

 

Sent from my GT-I9100 using Tapatalk 2

[justforme]

check if ur front brake disc is too thin or ur brake pad is wore out..

 

Sent from my GT-I9100 using Tapatalk 2

 

i just replaced my brake pads and the mechanic also said my brake disc is still new

[Lau Teck Seng]

Hi all,

Anyone encounter the S4 bike sound listen like "Subaru" not a "Honda"....

Cos today service carburettor and tuning, as previously when throttle respond like turtle, now like rabbit!

Feel the speed increase and respond fast also, but the sound becomes difference. Is this normal?

Anyone have the experience before?

Thanks in advance.

[wht3fr3]

i just replaced my brake pads and the mechanic also said my brake disc is still new

 

haf u service ur brake calipers??

 

Sent from my GT-I9100 using Tapatalk 2

[daryltan90]

Hey guys, does Iridium and normal spark plugs have any effect on the magnetic coil or rectifier - in the sense that will iridium or the normal one so call 'help the coil and rectifier last longer'? Is there any kind of maintenance we should we doing for our coils/rectifier? Apologies if this question is a no brainer but i've been looking through many of the threads and see that the coil/rectifier are common faults (and doesn't come cheap!) so was thinking if there's anything i can do to prolong it's life...

 

Spec 1 here btw. Thanks guys!

[wht3fr3]

Hey guys, does Iridium and normal spark plugs have any effect on the magnetic coil or rectifier - in the sense that will iridium or the normal one so call 'help the coil and rectifier last longer'? Is there any kind of maintenance we should we doing for our coils/rectifier? Apologies if this question is a no brainer but i've been looking through many of the threads and see that the coil/rectifier are common faults (and doesn't come cheap!) so was thinking if there's anything i can do to prolong it's life...

 

Spec 1 here btw. Thanks guys!

 

Spark plugs doesnt help. All that coil and rectifier are electrical parts which are hard to say..

 

Sent from my GT-I9300 using Tapatalk 2

[Ah Pek]

Hey guys, does Iridium and normal spark plugs have any effect on the magnetic coil or rectifier - in the sense that will iridium or the normal one so call 'help the coil and rectifier last longer'? Is there any kind of maintenance we should we doing for our coils/rectifier? Apologies if this question is a no brainer but i've been looking through many of the threads and see that the coil/rectifier are common faults (and doesn't come cheap!) so was thinking if there's anything i can do to prolong it's life...

 

Spec 1 here btw. Thanks guys!

 

Type of spark plug does not play a part. Your EO quality is the MOST IMPORTANT. Poor quality eo or over schedule eo would cause much damage to the inductors (small module like transformer units like components forming a status coil). The laquer coating that protects the copper winding is eroded away by metal filings from gears wears in the gearbox. When this metal filings and eocombines and flow pass by the coil's inductors..it's like 'liquid sandpapers' filing off the laquer protection for the copper wires. Once these copper wires are exposed and metal filing particles gets into them..electrical shoting occurs thus causing the inductors to burn out..especially those located at 11,12,1, and 2 O'clock location (check a sample of a damaged coil and u know what I meant). IMHO.