fuse burns

C

cb 550 guy

have a good day dude
hey dudes
i started my bike yesterday. but after some time i burned my main fuse 20A. i replaced it and went for a ride, after sometime it burned again. I checked every wire connection, it seemed ok but it still burns, what should i check.
 
i thinking that my rectifier is burned out too now. its brand new but i am going to take it to the shop to check it out. Maybe its burned.
 
I had the same problem on my kz650 and after many headaches, F bombs, beers and nearly kicking the bike over a few times trying to figure out what in the bloody hell was wrong with it I cleaned the clips that held the fuses (barrel fuse type before I did a blade fuse conversion, both ideas I got from another forum). They didn't look that bad, just a little dull but not corroded, but after I put my wire brush on the dremel and shined the fuse clips up nice and bright I put about 500 miles on the bike before doing the fuse box conversion without blowing another fuse.
 
chrisf said:
You likely have a loose / bad ground.

--Chris
Click to expand...

that would be a good thing to check. also check anywhere a wire might be crimped. my fuses kept going on my cb550 last summer. turned out to be a stripped wire that would short out the system.
 
it sounds stupid but pull all of the fuses. isolate the issue then fix. it sounds like a direct short. if it isn't the recitifier then check yor connectors. then check coils.

ever hear of the compass test? run a compass along the length of the cable. if there's a short, it will suddenly change directions where it is shorted.

got that from an exbf. at least he was good for somethin. sure wasn't sex ::)
 
One Fast Bikerchick said:
ever hear of the compass test? run a compass along the length of the cable. if there's a short, it will suddenly change directions where it is shorted.
Click to expand...

Hey I didn't know that.

Great Tip!
 
i find shorts on cars by disconnecting the first connector near the fuse box for the circuit that is blowing the fuse. if it doesn't blow, reconnect that connector with the fuse out and disconnect the next connector or connectors down the circuits line and put the fuse back in to test again. you can just disconnect the most likely failed component also and see if the fuse still blows. a ground to ground short will not cause a fuse to blow, at worse it will only cause a switched to ground circuit to stay on all the time the circuit is powered up. good luck and post up what you've found so we can try and help out.
 
the fuse hasnt burned since the last time. hope fully it stays like that. If it goes back i will call you.
thanks for all your help guys and gals
yasir
 
crusty old connections can be a pain. and let you down at the worst time.

it takes some time but pulling and cleaning every connection put my KZ right.
 
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