Question about 1998 Honda CBR 900 RR Fireblade

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I have got a cbr 900 rr 1997 the bike is turning over but does not seem to be getting fuel to the engine i have just replaced spark plugs and air filter i then started the bike up and was ok, but now it has used the fuel in the pipe when replacing the tank it will not restart ?

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First turn fuel selector off then find the line running from the fuel selector knob and pull it off of the full filter or fuel pump and have a small container or gas can ready... put the hose into the container and run through the three selector positions off on and reserve to insure that at least you have no fuel tank delivery problems because most tanks have internal filter that get clogged up!..if thats o.k. then hook back up the hose and pull the other line going to the pump and crank over the bike..fuel should be squirting out at a fairly good rate,right out of the pump hard line "not a drizzle"! now since you exhausted the fuel in the lines.. it is hard to get it started this way..what i do is take the tank and seat off and set the tank sideway were the seat would be..making sure that it wont fall off.. then take off the air cleaner off and this will expose the throttle manifolds..now purchase some starter fliud turn fuel selector to reserve position and spary a couple of seconds worth down each velocity stack openning and try to start it..it'll probably will take a couple of trys maybe even five attempts dont try any more than this because you'll burn up your starter let the starter cool down for about 20 minutes before tyring again..if this fails a second attempt then i doubt that you have a fuel problem, and would look into the spark plugs! take one out and let it touch the frame of the bike..you MUST see a bluish/white color, "not a weak redish purple"..if you see the later then i would first ohm out your pulse generator system for any opens, if any one of the two sets of wires reads open or low resistance like 100 ohms when it should be 400 to 500 ohms then thats your problem..it happened to me! i had one set open and the other reading 150 ohms!
Im back trying to help people out again, but it seems that i dont recieve any feedback, and it just seems futile to keep helping people out.. you know i dont get paid to do this, i do this because i know how expensive repairs can be, when i recieve any negative replies it sours my attitude but im back again and will try my best to help you and i can do this buy recieveing any input that you can give me or any of the other fellow fix-ya guys out there on this site, because this will help me or someone else in the future.
Thank you!

Posted on Jul 13, 2010

  • Guy Lindelow Nov 15, 2011

    Steve, that's some great advice. I am having similar problems. If I pull the fuel hose off of the petcock, and turn it from off to reserve, will gas pour out or does it need to be hooked to the fuel pump to see gas come out? I am thinking I may have something blocking my fuel from the tank to the carbs? I also bypassed the diode on the bottom of the ignition switch when trying to hot wire the bike after I lost my key, and am wondering if that may have blown the ECM?

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