Question about 1987 Honda CBR 400

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Hello I bought a Honda CBR 400 when you use the throtle it dies a bit but revs also noticed fuel leaking from carb ? how much do you think will this cost Thanks Steve!

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Hi there you could first start by stripping the carb down sounds like the jets could be stuck or damaged in some way or could ust need ajusting

Posted on May 22, 2011

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When im driving my cbr 250rr the revs are jumping up and down at times, my bike has been off the road for over a year. any suggestions.??


carbs sound a favourit place to start so clean them ! did you drain all carbs and fuel tank ? fuel goes off after 6mths ! replace !

Dec 05, 2013 | 1996 Honda CBR 250 RR

1 Answer

Carb problem i think ???


did you check fuel filter or pickup in tank?

May 22, 2013 | Motorcycles

1 Answer

1988 Honda CBR 600 F Hurricane leaking fuel from carbs


Hi, Anonymous and the usual suspects are:
1. Damaged or restricted fuel tank venting system.
2. Loose float bowl screws.
3. Damaged float bowl o-ring.
4. improper fuel level in the float bowl.
5. Worn or dirty inlet valve or seat.
6. Damaged or leaking float assembly.
7. Particle contamination in inlet fitting cavity.
8. Damaged petcock diaphragm allowing fuel to flow through the vacuum line into the combustion chamber.
For more information about your issue and valuable "FREE" downloads that you will need for viewing or printing please click on the blue links below. Good luck and have a wonderful day.
Fuel leaking from carbs CBR Forum Enthusiast forums for Honda CBR Owners
Carbs leaking Here is how to fix it
http://www.home-business-host.com/images/cbr/CBR1000F%20SC21%20(1987-1996).pdf https://www.partsfish.com/page/oem-parts-for-honda
Honda CBR600F Owner Manual

Apr 24, 2012 | 1988 Honda CBR 600 F Hurricane

1 Answer

Runs at full throtle and then stops


sounds like you have a crank seal out of it, you ncan try to clean carb and check fuel lines etc, but usually when they rev high with out giving throttle means there is an air leak Good Luck 2StrokeJim

Nov 19, 2011 | Poulan 25CC Gas BlowerVac

1 Answer

Been stood for about 10 years high revs all for carbs work low revs only 2 works and it's over fueling


take it to a shop and have the carbs sinked and add a bit of seafoam to gas to clean out everything as this helps alot

Jul 12, 2011 | 1994 Honda CBR 900 RR Fireblade

1 Answer

1993 CBR 900rr gas is leaking from vent tube


Hi, Blackwidowbi and the usual suspects are:
1. Damaged or restricted fuel tank venting system.
2. Loose float bowl screws.
3. Damaged float bowl o-ring.
4. improper fuel level in the float bowl.
5. Worn or dirty inlet valve or seat.
6. Damaged or leaking float assembly.
7. Particle contamination in inlet fitting cavity.
8. Damaged petcock diaphragm allowing fuel to flow through the vacuum line into the combustion chamber.
9. Contaminated fuel tank.
For more information about your issue and valuable "FREE" downloads that you will need please click on the blue links below. Good luck and have a wonderful day.
Leaky Carburetor CBR Forum Enthusiast forums for Honda CBR Owners
CBR 600 F2 1994 Fuel overflow Honda Motorcycles FireBlades org
Honda CBR900RR Service Manual
http://www.partsfish.com/page/oem-parts-for-honda
Honda CBR900RR Fire Blade Owner Manual

Sep 15, 2010 | 1993 Honda CBR 900 RR Fireblade

1 Answer

Max revs 14000 rpm.


You possibly sucked something in your fuel system clogging it a bit on the high rev., ?or just Get a new battery too.,.that could just be the issue.,.,

Jan 11, 2009 | 2004 Honda CBR 600 RR

1 Answer

Max revs 14000 rpm.


hey m8,,,just looked at your problem,,to start with i need to uliminate a few things first,,is the bike restricted do u no,, to 33bhp,,that sounds the problem,, the restrictors could be in the carbs,to check this take the top of the carb off pull out the spring, and needle,, on the diaphram check theres no pin holes,by holdin it up to the light,,then on the needle u may see a bit of a plastic spacer or down the inside of the carb,if so then take that out or off,,and repeat this to all 4 carbs,,if nothing is visable,,then check the spark plug caps,and ht wires on the coil,, to be sure change all the plugs if they are not the plugs that should be in the bike,,see spec in a manual,4 the right heated spark plug,, and change the plug caps,try this first m8,, if still not havin any of it, ,shout andil anserw m8,, cheers

Jan 11, 2009 | 2004 Honda CBR 600 RR

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