Blowing main fuse after 1 minute of warming up

[Guest]

Hi fellow gs enthusiasts. I have any issie where my bike will idle ok from cold for just over a minute. After that it will rev really high on its on after giving a bit of fuel and blow the naon fuse cutting everything out. Has anyone had this issue before? Video of the situation uploaded. Thanks in advance

[Burque73]

I'm no electrical wiz but let me ask a few questions and maybe something will be apparent or others will chime in here.

How many cylinders does that bike have? Better yet, what bike is it? Sounds like at least one cylinder is not firing.

Have you changed/ modified any part of the ignition system?

Are the plug wires on the correct spark plugs?

[Cipher]

ok so you have an air leak or soemthing
also a lot of enleanment if indeed the thing is running with n airbox or filtration

chase through your harness looking for a short
a dead short would blow right away but a frayed wire or chafed exposed wire might take a bit f time to heat the fuse to melting point

[Cipher]

good god a 30 amp fuse? are now parts of the harness getting hot prior to popping this thing?

[Circa87]

2 cylinders, gs450s 1981 model. both cylinders are firing, will run fine for over a minute then this. No modifications, was riding it up until this started.

[Circa87]

Nope. no heat.

[Burque73]

2 cylinders, gs450s 1981 model. both cylinders are firing, will run fine for over a minute then this. No modifications, was riding it up until this started.

Ha, guess I'm just used to the sound of the fours.

[posplayr]

Disconnect the r/r from stator and battery and see if the bike will start and run; use a 15 amp fuse

[Circa87]

Disconnect the r/r from stator and battery and see if the bike will start and run; use a 15 amp fuse

ok will try tonight when home. thanks

[Circa87]

20623484_10155339861990781_1829794162_o.jpg

So i think ive found this issue, this little prick was poking out onto the compliance plate. It started an ran for a while, then i moved it and no no power at all. but i think it has something to do with the fuse holder ground aswell, as when i touch it the power comes on. Back onto the headache tonight! Thanks for your help so far guys!

[BigD_83]

Do you have a wiring diagram? Is that solid orange, or orange with a white stripe (O/W)

http://zeus.mtsac.edu/~cliff/storage/gs/GSX400_GS450_wiring.pdf

[Circa87]

From memory its actually brown, will have to double check again tonight. Thanks for the diagram. Little hard to read with my eyes

Do you have a wiring diagram? Is that solid orange, or orange with a white stripe (O/W)

http://zeus.mtsac.edu/~cliff/storage...450_wiring.pdf

[Circa87]

Update:
Peeled back some of the electrical tape that was ment to be hiding the recently "updated" wiring. Looks like fun times ahead.
Screenshot_20170804-202820.jpg

[Circa87]

There is actually alot more but i dont know how to upload multiple photos

[BigD_83]

That is a serious mess of overheating wiring. You seem to have a sense of humour; you're going to need it.


The only way to upload multiple images in a post is to do it through links to a web-host. Up to 10 per post allowed. Photobucket is basically dead, but there are many options, including but not limited to Google Drive, Imgur, tinypic, Imageshack, etc. Each has its own strengths and weaknesses.