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

[jayz]

Hi all~

 

Q:

 

Have this problem recently, when starting bike due long hours never start (overnight, 4hrs+ etc) will have problem starting, the RPM is very low at around 1 and sometimes below it and keep jumping up and down. But when I ride for 10-15mins the RPM will rise up to 1.2-1.3ish, and if I ride longer or weather is hot, it might rise to 2 RPM. Which i have to use the knob near the engine there to adjust the ideling RPM.

 

Anyone of you experience this before. I'm riding SPEC 3, Yoshi full system, could it be due to the tuning run liao, i never done anything bout that for 5 years already.

 

Thanks guys!

 

it could be and check your spark plug

[Spideyzam]

[Q]

My Spec 3's speedometer needle usually turns when i turn the ignition key and also when i press the starter but now the needle only turns when i turn the ignition key but it doesnt turn when i press the starter. Any advice? Thx.

[kyoka]

it could be and check your spark plug

 

Just changed my spark plug too thut it would work but shortly after awhile the problem kicks in again.

 

I have overheating problem for quite sometime liao, pour in full coolant + water, the liquid boils finish in like a good 20-30mins ride. The alert light (left) under Green neutral light, always light up awhile when I start riding.

Change full coolant piping last year, and just did some serious servicing last week (change water pump, re-thread and insert 'heli' coil at engine case, couple of valves (int, spool, 8ct) at some neighbourhood bike tiam but problem still comes back.

 

One very impt question, any reliable bike tiam to go for such problems? Spent like 2k+ over this problem liao but still not fixed, damn sian.

 

Thanks for pointing in any directions!

[jokerdefar]

[Q]

My Spec 3's speedometer needle usually turns when i turn the ignition key and also when i press the starter but now the needle only turns when i turn the ignition key but it doesnt turn when i press the starter. Any advice? Thx.

 

Now ur bike is ok...turn one time is batt normal.....turn 2 time means low batt...

[Ah Pek]

Just changed my spark plug too thut it would work but shortly after awhile the problem kicks in again.

 

I have overheating problem for quite sometime liao, pour in full coolant + water, the liquid boils finish in like a good 20-30mins ride. The alert light (left) under Green neutral light, always light up awhile when I start riding.

Change full coolant piping last year, and just did some serious servicing last week (change water pump, re-thread and insert 'heli' coil at engine case, couple of valves (int, spool, 8ct) at some neighbourhood bike tiam but problem still comes back.

 

One very impt question, any reliable bike tiam to go for such problems? Spent like 2k+ over this problem liao but still not fixed, damn sian.

 

Thanks for pointing in any directions!

 

DID UR RADIATOR EXTRACTOR FAN CUTS "ON" before your temperature light indicator comes "ON"?

[Spideyzam]

Now ur bike is ok...turn one time is batt normal.....turn 2 time means low batt...

Thx for advice! The mechanic actually say the battery low oso. Just wanted another person's opinion before changing batt.

[kyoka]

Chk your air filter and radiator; if radiator is leaking or whatever

 

Chk your carburettor. I had my carb serviced badly once, and the rpm needle fluctuated like mad; returned the bike, had it re-serviced, no more problem

 

Another thing, don't mix coolant with water. Water causes the formation of rust within the coolant system.

 

hmm both I have not service for sometime liao. As for the carb, even longer never do anything to it.

All worth a shot! aiyo, cannot add water ah, I thut can sia, anyway many thanks for the tips and direction man!

 

DID UR RADIATOR EXTRACTOR FAN CUTS "ON" before your temperature light indicator comes "ON"?

 

Actually it does, usually when hot, the extractor fan will just on. Not sure which is before, but I'm sure when there's light the fan will on. Quite sometime never on liao though but after the recent servicing, it did on a few times then it died off totally.

[Ah Pek]

hmm both I have not service for sometime liao. As for the carb, even longer never do anything to it.

All worth a shot! aiyo, cannot add water ah, I thut can sia, anyway many thanks for the tips and direction man!

 

 

 

Actually it does, usually when hot, the extractor fan will just on. Not sure which is before, but I'm sure when there's light the fan will on. Quite sometime never on liao though but after the recent servicing, it did on a few times then it died off totally.

 

In this case..if u had not changed or replaced ur thermostat..either replace it with a new one or take it off totally. It's located under ur left side under the tank where the coolant hoses meet in a housing (thermostat inside)..could be jammed or gone bad from previous rusting.

[kyoka]

In this case..if u had not changed or replaced ur thermostat..either replace it with a new one or take it off totally. It's located under ur left side under the tank where the coolant hoses meet in a housing (thermostat inside)..could be jammed or gone bad from previous rusting.

 

hmm so you mean the thermostat can be taken off completely and will not affect anything?

Well, I guess i just replace it with a new one to avoid all other trouble next time. Anyway many thanks for the guidance, brought me some light bout my bike.

Lastly, any bike shop to recommend ?

[kimboslice]

[Q]

 

Hi Speckys.. I'm riding a spec 3 and recently changed my brake pads. Since then, the pads have been brushing my discs and causing a squeaky sound. I've gone to a few shops and they claim its normal. Recently only i changed my bearings, so thats not the issue. Or is it time to service the calipers?(7yr old bike) But if thats the case, why did i encounter this prob only after changing the pads?? pls advise, tks bros

[snake_sin]

[Q]Dear S4 riders who rides REVO,

I am contemplating between getting a new REVO or a 2nd hand spec 3.

I have read through the forum and found that there are numerous issues like water ingress into TPS, burnt electrical coil (aka alternator) and that double sweep low battery syndrome on the REVO.

Can any kind souls advice if these problems still exits in the newer batches of REVO?

I am an ex spec 2 rider and have never experience issues like that last time.

I understand that the REVO being FI now draws more current than the caberator versions but being a Honda, I don't really find it acceptable.

Especially the new REVO cost 18K plus OTR these days.

Please PM if not convenient to post here...Cheers to all in advance.

Edited August 24, 2012 by snake_sin

[jie1314]

(Q) i got this problem from i get my bike ...do anyone experience vibration on the pillon footrest when cruising around 4-7k RPM speed around 90-120km...my vibration on the pillon is so jialat till leg go numbness..the rider footrest oso vibrate but not to the extend numb..i try go ubi bike shop..one told me is normal as the about to reach vtec , vibration arise which i don't think so ...FYI i using yoshi pipe..but b3fore i change stock pipe already encounter this problem.. 1 ) i try loosing n tighten whichever screw along the exhast and change the gasket and rubber insulator on the rear part ...Any kind soul got any solution here ?? veri urgent as i am pillioning my fren to work everyday..mine is a Spec 3 ..

[jokerdefar]

(Q) i got this problem from i get my bike ...do anyone experience vibration on the pillon footrest when cruising around 4-7k RPM speed around 90-120km...my vibration on the pillon is so jialat till leg go numbness..the rider footrest oso vibrate but not to the extend numb..i try go ubi bike shop..one told me is normal as the about to reach vtec , vibration arise which i don't think so ...FYI i using yoshi pipe..but b3fore i change stock pipe already encounter this problem.. 1 ) i try loosing n tighten whichever screw along the exhast and change the gasket and rubber insulator on the rear part ...Any kind soul got any solution here ?? veri urgent as i am pillioning my fren to work everyday..mine is a Spec 3 ..

 

You can try Putting on heavier bar end weights. This would minimise the vibration transferred to your footrest. Some vibration between 5-6.8 k rpm is normal for spec 3.

[snake_sin]

Any input on these guys?

 

[Q]Dear S4 riders who rides REVO,

I am contemplating between getting a new REVO or a 2nd hand spec 3.

I have read through the forum and found that there are numerous issues like water ingress into TPS, burnt electrical coil (aka alternator) and that double sweep low battery syndrome on the REVO.

Can any kind souls advice if these problems still exits in the newer batches of REVO?

I am an ex spec 2 rider and have never experience issues like that last time.

I understand that the REVO being FI now draws more current than the caberator versions but being a Honda, I don't really find it acceptable.

Especially the new REVO cost 18K plus OTR these days.

Please PM if not convenient to post here...Cheers to all in advance.

[r1d3r]

hey mates,

 

do you know where to get good second hand front fork assembly for CB400 PB1 or the like? Im aiming to get one with the calipers if possible...

 

another thing am looking for is a mono shock for CBR600RR 1995-1997

 

TIA

[snake_sin]

Gents,

Many thanks for your feed-backs and PMs I have received.

 

[Q]Dear S4 riders who rides REVO,

I am contemplating between getting a new REVO or a 2nd hand spec 3.

I have read through the forum and found that there are numerous issues like water ingress into TPS, burnt electrical coil (aka alternator) and that double sweep low battery syndrome on the REVO.

Can any kind souls advice if these problems still exits in the newer batches of REVO?

I am an ex spec 2 rider and have never experience issues like that last time.

I understand that the REVO being FI now draws more current than the caberator versions but being a Honda, I don't really find it acceptable.

Especially the new REVO cost 18K plus OTR these days.

Please PM if not convenient to post here...Cheers to all in advance.

[kyoka]

Hi guys another quick question:

Q

Can a Yoshi tri-Oval full system from Spec III be transfered to a REVO?

Heard from multiple shops some say can some say cannot due to the header is different, anyone has put up a full system from previous version of Super4 for REVO before?

Thanks!

[Hakimi Ayumi]

Hi ther..Im riding a spec 3..My font brake lever seems to b stiff n hard whenever i brake n the brake light wld take awhile to turn off..cld it b my brake pump kit?How much to chage new 1? Tanx

[confusehaha]

Hi ther..Im riding a spec 3..My font brake lever seems to b stiff n hard whenever i brake n the brake light wld take awhile to turn off..cld it b my brake pump kit?How much to chage new 1? Tanx

maybe u might try re-bleeding ur brake? replace the oil it in to give it a try?

[Arlwynn]

Hi ther..Im riding a spec 3..My font brake lever seems to b stiff n hard whenever i brake n the brake light wld take awhile to turn off..cld it b my brake pump kit?How much to chage new 1? Tanx

 

Yr front caliper needs servicing already ... both sides and check the pads together and bleed the hoses too ... sound like caliper jam ...

Unable to release itself back to normal position...

 

Hope it helps ...

[lycan]

Two questions.

 

Am i able to find stock(spec1) rear signal bulb from normal neighborhood hardware stores?

 

Will LED signal be able to pass inspections? Assuming the blinking frequency is regulated to normal rate.

 

Thanks!

[ROYakaSAKDA]

Hi,

For me LED signal and fast blinking did not pass inspection at kaki bukit.. but then changed to small normal signals with fast blinking i passed the inspection. was told by the inspector LED signal will fail however differs from inspectors i guess =] cheers

[lycan]

Hi,

For me LED signal and fast blinking did not pass inspection at kaki bukit.. but then changed to small normal signals with fast blinking i passed the inspection. was told by the inspector LED signal will fail however differs from inspectors i guess =] cheers

 

Hmmm... I see... Thanks!

[Muge]

Q: Any idea how much engine guard re-spray will cost? Mine is scratched after a fall.

And any recommended place to do it?

 

Thanks.

[Arlwynn]

Q: Any idea how much engine guard re-spray will cost? Mine is scratched after a fall.

And any recommended place to do it?

 

Thanks.

 

I guess any bike shop will do it at a minimal cost but depends on how`s your PR with them ...

But i really don`t suggest you to re-spray it anyway cos it will peel of after washing the bike with hi-jet spray or the paint will chip of eventually after riding it due to small pebbles or stone will hit it ...

 

I personally suggest to replace it cos after you drop the bike it might even crack at the welding part at the mounting or even rust will attack the welding area try to check it visiblity ...

 

If it really crack at the welded area then it will not be any protection for your bike ...

 

If not you can replace it with stainless steel ones customized type to suit your design ...

 

Hope it helps ...