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Blowing main ignition and the other 10 amp fuse fuse have to wait for the bike to cool off then put new fuses in and it starts rite up, If I try to turn it over with the new fuse when its hot I blow the new fuses
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Jun 19, 2009 - 13 posts - 9 authors
Ive had my bike at a workshop for the last 4weeks getting a freshn up . ... If the fuse isblowing that quick you should be able to find it quickly , probably .... eliminated the dash and reduced the amount of things you need to look at. .... SL750 / Dorsoduro 750 · 2008-2014 Mana 850 and Mana 850 GT-ABS.
Paul
Somewhere there is a short circuit allowing the current to flow straight to earth on the engine or the frame. Blowing a 10 amp fuse means this is a very heavy current so do not be tempted to either fit a higher rated fuse or bypass the fuse. Almost certainly this would cause burnt out wiring and possibly start a fire.
This happened when you switched on the ignition and before you pressed the starter on one occasion. On other occasions the bike has started before blowing the fuse. This suggests that perhaps wiring with damaged insulation is making and breaking contact.
You said you have a new battery. Is it possible that during the fitting of this some damage was done to the wiring? Do you have a meter or can you borrow one? See if you can find out where this current is running to earth without replacing the fuse. ie check after the fuse with a meter.
At times like this it is good to have a friend that is an electrician to help you check.
main breaker/fuse will have no effect but a 50 amp breaker/fuse will cause the wiring the breaker is there to protect to melt if there is a short or other abnormal draw through it and the destroyed wiring harness(es) would probably exceed the cost of the bike to fix so do not be putting in oversize breakers or fuses.
Hello! Just because you changed an engine does not mean that something unrelated hasn't occurred... In the fuse box is the 10A fuse in the far left row...Third fuse down?....If it is that is the ECM ignition Fuse...Tracing from the ignition switch it is a Pink wire that goes to a 3A in-line fuse and changes color to Purple/White then on to the ECM...When the fuse blows is there battery on the Pink wire?...If not...Pull the blown fuse...Disconnect the main Battery terminal...Set multimeter to the X 10 scale...Place one lead on each side of the pulled fuse socket and the other lead to bare metal ground...Does either side read resistance to ground?...If it does turn the ignition key from off...To ACC,.. to start and finally hold on run...Does the ground go away in any of those positions? if it does I would suspect one of the ignition switch wires is touching ground...Hard to find...But if you alligator clip the meter in place and wiggle the ignition wires you may see it come and go...Indicating where you are moving the harness the bare wire is pinched to ground... However...If the movement of the key does not produce a change...Remove the fuse box...Flip it over... identify the wire on the fuse that blows and trace it with meter in-place wiggling as you move through the harness until you find the bare spot touching ground...
An easier softer way is to identify the color of the wire that connects to the ECM IGN FUSE...It will be Red, or Purple/White and go to the ignition switch...Cut it on both ends and run a wire of the same gauge from point to point...Guru...Saailer
Usually a bad regulator will only cause problems with charging... Sounds like you've got a short somewhere in the wiring...I'd start by checking the ignition switch wiring and the connections going into the fuse box.
- clogged air filter element
- low fuel pressure in the injector supply rail
- bad ground connection, at battery, engine block, or chassis
Check these things first. You may need to measure fuel pressure with a T-fitting and gauge. Please don't try it by running the engine and seeing how fast the fuel fills a container, that is dangerous and gives the wrong answer.
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DOES YOUR BIKE HAVE CORRECT IGNITION COIL IF IT TOO HIGHLY RATED I.E A SPORTS COIL YOU WILL PUT EXCESSIVE CURRENT THROUGH FUSE CAUSING IT TO BLOW. IS THE FUSE HOLDER SECURED DOWN VIBRATION CAN MAKE FUSES BLOW LIKE BULB FILAMENTS {TRY A 15AMP FUSE] IF THAT BLOWS DEFINATE OVER RATED COIL
Sounds like it is a short. Start checking all your main wiring and make sure that nothing has rubbed showing bear wire and that nothing is grounded on your system. The short in the loom if VERY common due to vibrations
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