Question about Honda CBR 250 RR Motorcycles
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Posted on Jan 02, 2017
SOURCE: Bike died during poker run
I would eliminate the possibility of bad gas first, considering you had just filled up. Move on to the other possibilities after eliminating the simple ones first. Battery, spark plugs, plug wires, other ignition problem, fuel delivery problem.
Posted on May 24, 2009
Try putting in new, stock spark plugs. Check and possibly replace the air filter. Charge the battery. Get the bike running then check the battery voltage at 2000 rpm. It should show 14volts or more. If not, get the charging system checked. Get a can of starting spray (for future problems).
Get the compression checked. Your bike is 21 years old and I will bet that the valves are needing to be reseated. Check the valve clearances with a cold engine and reset valve clearances as needed. Check the area where the head contacts th cylinder. Any mist of an oil stain? Tighten the head or replace the head gasket. If replacing the gasket, now is the time to have the shop lap re-seat the valves. Have them sync and balance the carbs as well. Your bike will now have its' manners back and show you the dedication it should.
Posted on May 29, 2009
The sputtering was a bit of water in the bad gas you got and the smoke was probably from a bit of diesel fuel that was put into a gasoline storage tank in error. The temp guage going bad is just one of those things that happen from time to time, probably just a bad sensor. The idle speed change is a bit quirky but easy to adjust. Stick a fresh set of plugs in the bike and the starting problem should clear up.
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Posted on Jun 25, 2009
First thing I would try is some sea foam, you can get it pretty much at any auto parts store...put it in the tank per instructions on the bottle, if the carbs are gummed/dirty... seafoam is you best hope at getting them clean without pulling them.
If sea foam doesnt work, you'll have to yank the carbs, but before you do... pull the tank, set it backwards where the seat was, get about a two foot fuel line (air line works just fine) run it ti the tank and start the bike, take a can of starting fluid (WD 40 works too but stinks when it starts to burn off afterwards) and spray around the base of the outside of the carbs where the boots connect it to the intake, if the engibe revs, you have a leak...cracked boot probably.
If no leaks are detected... then yank the carbs, pull the bowl covers and start cleaning....also, while you have them off pull the slide covers off and check the diaphrams on the needle for rips or cracks as well.
Check/clean.. put everything back together... if it still isnt running right then I have no other suggestions... certainly sounds like an air/fuel problem... if were anything else choking it wouldn't make it better.
Posted on Jul 10, 2009
Sounds like ignition problems; I know you've had it serviced but check condition of spark plugs. Check all electrical contacts for corrosion, more specifically the timing pickup circuit, wires to coils, CDI connector. You're CDI may be the culprit, try swapping it out for a known good one. If it's back firing then enough fuel is getting through the carbs, so would indicate to me that the problem doesn't lie there. Hope you have some luck.
Posted on Mar 12, 2010
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