Confused and need help!

[quickbuck]

thanks for that mate, yea i'll start with the rectifier first as i did notice there was corrosion white/blue color on the plug inside

Oh, yes, sorry I was going to comment on that too....

Corrosion on plugs is one of the best insulators in the world!!!
Give them a clean up with Scotch Brite and CRC CO Contact Cleaner (If you can afford it), and see how things go from there.

About ten years ago.... Wait, 15 years ago my 1987 CBR 400 had a lot of corroded plugs in it, and all hell broke loose with the electrics one day...
Yes, it went from going perfect, to indicators not flashing, horn dying and hard to start all in one day! It obviously just got to that point between weekend rides, and may not have helped that the last one was in the rain...
I digress....
I hope you get this sorted.

[CookMySock]

now, when i turn the bike on its at 12.3 volts.... when i RPM it to 2.500 its goes up 0.2 volts.. when i hit it at 5k RPM it goes up 0.4 or 0.5 volts....... is this normal? does this mean its charging again?

I do not think it is. You really need someone to measure the current flowing - you cannot do this easily with a simple multimeter.

If you cannot spend money on it right now, I suggest you take the battery out, and take it back to the shop and ask them to charge it overnight for you. Tell them there is some charging problem, and you need the battery charged to help you check it. Perhaps they will not charge you for this.

Put the charged battery back in, measure its voltage first (should be 13V) and then start the bike. Battery voltage should remain over 13V. If it does not, then use the troubleshooter as above to find the problem.

Steve

[phiretrojan]

I do not think it is. You really need someone to measure the current flowing - you cannot do this easily with a simple multimeter.

If you cannot spend money on it right now, I suggest you take the battery out, and take it back to the shop and ask them to charge it overnight for you. Tell them there is some charging problem, and you need the battery charged to help you check it. Perhaps they will not charge you for this.

Put the charged battery back in, measure its voltage first (should be 13V) and then start the bike. Battery voltage should remain over 13V. If it does not, then use the troubleshooter as above to find the problem.

Steve

Hi Steve, yea i charged the Battery overnight till it was full and tried it again today. the Battery was 13.25 volts... as i just charged my other one, that sits in the back under the seat away from metal Just in case it goes flat the other one, did a flow chart diagram to see if its the battery etc.... judging from what people are saying and what my tests are its outter my stator needs rewinding or replaced or my rectifier - i'm just going to replace my rectifier. first and retry again

but first i need to clean the plugs good first and see what happens

[CookMySock]

judging from what people are saying and what my tests are its outter my stator needs rewinding or replaced or my rectifier - i'm just going to replace my rectifier. first and retry again [...] but first i need to clean the plugs good first and see what happens

Ok, I think you are on the right track.

With the engine stopped, you can test ohms to ground on the yellow stator wires - you should have an open circuit to ground.

Also test with the engine at a high idle (3-4000rpm) you should have about 25-45 volts AC between any of the three yellow wires. Don't grab the wires coz you will get a healthy boot off them.


Steve