Question about Honda CB 100 Motorcycles

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Bike will not start because its flooding profusely.so much so, it comes out the exhaust pipe . help

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If you have a vacuum petcock make sure the diaphragm does not have a hole in it causing fuel to bypass the fuel petcock.
Note: always turn your fuel off when not riding. Not turning off your fuel petcock might cause your engine to fill with gas. Make sure your oil is not contaminated with gas. If it is you will have to do an oil change. It is possible that your air filter is now soaked with oil.
Next you may have to take your carburetors apart and clean them. They could have gummy gas in them causing the float needles to stick open flooding the engine. When cleaning inspect thew needles for wear, damage, and bad rubber shut off tips and replace them if necessary.

Posted on Mar 20, 2011

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2 Answers

What is causing steam from my exhaust pipe and bike won't stay running?


It's probably dirt in the carbs and the steam is the un burnt fuel from a stuck needle valve in the carb

Oct 05, 2014 | Honda NSR 250 MC 21 Motorcycles

1 Answer

Gas coming out left exhaust pipe


do not run this motorcycle anymore until you fix your carb(s). you have a serious flooding condition that could lead to a total loss. Your float or needle/seat or both are bad. depending on the age of the bike depends on how much money it's going to cost and where you can find the parts but they are out there...

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Oil Coming from the Cylinder Head! What to do?


it sounds like the oil pressure bleed bolt (8mm bolt left hand side of the head just above the exhaust pipe) once uv changed the oil, loosen this bolt only slightly but loose, start the bike and oil shud seep from it within a minute, if so tighten up the bolt, if not somethings gone wrong.

Aug 16, 2012 | 2005 Yamaha WR 250 F

2 Answers

On my pipes one side is hot and the other is cold


Check the pipe right where they come out of the heads. It depends on what type of exhaust system you have on your Road King. If the stock exhaust is on the bike, the rear cylinder exhaust is directed to both mufflers. With the exhaust from the front and part of the exhaust from the rear cylinders going to the right side muffler, it gets more exhaust than the left side and runs hotter. Like I said, check the temp of the exhaust pipes at the cylinder heads. If one of them is cold, that cylinder is not firing. As long as both of the pipes are hot there, you're fine. Just ride the bike and have fun.

Ride Safe.
Stevev

Apr 09, 2011 | 2000 Harley Davidson FLHR-FLHRI Road king

1 Answer

Car not starting, oil in spark plugs. changed valve cover gasket and spark plug seals. still cant get the car to start. starter is turning engine turns over and getting spark. i can smell fuel coming from...


If you smell fuel in the exhaust the vehicle is flooding or there is no spark. If it is a carb engine, make sure that the choke is in and hold you foot flat on the pedal while trying to start, this will clear any flooding.

Apr 01, 2011 | 1996 Honda Accord

1 Answer

My honda shadow sabre the pipes trun blue


Motorcycles come standard with double wall pipes. The inner pipe turns blue and the outer chrome pipe stays nice. In a stock exhaust system you rarely get blued pipes. Unless, you put on your choke, start your bike, answer the phone, and forget your bike is running (or you start driving and just forget to turn off your choke.). Then you will blue your double wall pipe. Bluing is generally caused by too rich of a mixture or fuel burning in the exhaust pipe. If you put on an aftermarket pipe(usually single wall construction) and did not coat the inside of the muffler pipe, the pipe will generally blue the first time you drive the cycle. An old dealer trick is to replace blued aftermarket pipes with new aftermarket pipes (makes the bike look great on the showroom floor). Again if they don't coat the inside of the pipe with exhaust paint or a special coatings usually about $35 the pipes will blue before the customer gets home. If the bluing is mild you could try a product called" Blue Away"that might help, but should not be used regularly as it takes off a little bit of the chrome each time.

Jun 06, 2010 | 2001 Honda VT 1100 C2 Shadow Sabre

2 Answers

I have a 1984 honda xr 350 and i've changed the spark plug, pulled out the carbs and cleaned them, and changed the airfilter. I still can't get it to kickstart no matter how long i try. its getting gas and...


Those bikes can be a pain to start after they've sat awhile. What always worked for me was twist the throttle a bunch. I mean make sure its flooded. Then lay the bike over on its left side until the gas runs out the overflow. Stand it up and lay it down until it stops running out. Then I squeeze the decompression lever and cycle the motor. Now just barely pull on the decompression lever to open the valve just barely. Get it to top dead center and give her a good kick with a twist of the throttle. Becareful it could kick back.
This technique works for when the bike stalls when its hot. Most important part is if you think its flooded lay it over and start the process over. Remember your XR has two carbs and will flood QUICK. After some practice you'll be able to hear it in the exhaust pipe if she's flooded or if she trying to come around. Trust me. I have four of these bikes. Two 83's, one 84 and my beloved 85.

Jan 27, 2010 | 1985 Honda XR 250 R

1 Answer

Exhaust gets red


could b obstruction in exhaust put hand couple of inches behind exhaust and rev it up should have good amount of exhaus coming out.if it is no obstruction there check timing

Feb 28, 2009 | 2003 Yamaha YZ 250 F

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