Question about 1970 Honda CB 100

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Black bits in carburetter - 1970 Honda CB 100

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Either dirt in the tank is getting into the carb or the fuel line is deteriorating and pieces of the inside of the line are getting in the bowl. Disassemble the petcock and replace o-ring, screen, and four hole washer. Put on a new fuel line and consider adding a small inline filter typically used on a lawn mower. This should even take care of rust that may have formed in the tank over the years. If you have bad rust in your fuel tank a chemical cleaning kit can be purchased to soak the inside of the tank and clean out the problem.

Posted on Aug 04, 2010

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Posted on Jan 02, 2017

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Workshop manual


In the absence of specific details as to make and model, here are some videos.

http://www.bing.com/videos/search?q=chainsaw+Carburetter+cleaning&FORM=HDRSC3

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Replaced fuel pump - filter- and mass air flow sensor still leaves me stranded turns over wouldnt start but does not seem to be getting gas because it does not smell


have you tried to open the air drum revealing the carburetter then bring a sprayer filled with gasoline and get someone to turn key on while you spry over the carburetter and air manifold it will starts the go to the carburetter have it fixed or adjusted

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My 1991 Chevy s-10 rear wheel drive 4 cylinder has had problems staying on. Every time i turn it on i have to press the gas pedal all the way down for it to stay on and even though it stays on for a bit it...


That year S-10 had a lot of caburator problems and vaccum leaks . Check vaccum leak's first then Check you ilde control curcuit inside the caburator the idle jets may be clogged you also have a idle control set screw that can be adjusted to set the idle higher.

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Carburator wont let fuel through to burn


Those carburetters are so small that the least bit of dirt blocks something or jams the needle and seat. Strip and clean the carb and check all diaphragms, replacing the carb kit is of course preferable. Make sure that the fuel supply and return lines are correctly connected, and that the primer bulb pump operates. (Use this as a check for the fuel lines).

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Hello, I have a Honda XR250 1990 (europe) Black smoke and licht noise in cilinder, what to do ? Thankx zegersjulien@hotmail.com


Did you ever done Decarb for your Motor Cycle ? It is recommended to do a Decarbonisation of Cylinder Head and Replace the liner every 30000 - 40000 Kms .
Black Smoke Can be Because of
1. Damaged Cylinder Liner 2. Dirty Cylinder Head 3. improper Combustion 4. Fuel problems 5. Fuel Pump / Carburetter Problems
need Physical Examination Foe a definite Solution

Please Rate my answer and Support me

Nov 21, 2010 | 1990 Honda XR 250 R

1 Answer

Have 1983 dodge 150 pickup took off carb to clean. now it will hardly run,when u push the pedal black smoke pours out of exust. could the float be stuck,or needle valves pluged?


hi, it seams if you rejetted it wrong or left them out. if float stuck it will flood carburetter and the plugs will get WET and will not start. try to remember the other things you done. gerry

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1998 gmc 1500 p/u, 4.3 vortec. Will not start. No codes, good fuel pressure and spark


I assume it is cranking. So if you have gas and fire, we're down to timing, right? Or do you have security light on? Not sure what anti-theft system you have but some only shut off injectors. If no security light, you might have to pull the timing chain cover to check valve timing. Any questions or comments, please reply.

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1 Answer

I have a 56 plate nissan micra which over the last 2 days has started juddering a bit in 1st and 2nd gear once the car has warmed up and seems to lose power.


Hi This sounds like a fuel problem clean you carburetter out first if still not solved clean or renew the fuel filter out. Please leave me feedback thanks, Malcolm Campbell.

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It blows black smoke wen i get on it real hard and it also does it wen i let it sit and idle it dies sometimes


Way too rich (pollution, horrible gas mileage and shortening the life of the engine by washing down the oil)...
Check carburettion.
Is this carburetted or injected?

JOAT

Oct 16, 2009 | 1988 Jeep Cherokee

1 Answer

Carburetter and electrical wiring


That is a tipical isue in those carburetter honda engine,( after some time start to leak fuel) you will need take the car to a carbuetter specialist ore replace you carburetter, because you are in risk to burn yourself like that or you family, if the car get on fire in any momment, what happend with the electric sistem

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