ELECTRICAL ISSUE POST VALVE JOB

two-stroke-brit · Post by **two-stroke-brit** » Thu May 23, 2019 3:23 am

Hi All.

thought i would see if it would start before putting everything back on.
and i put the battery on charge ,it shows 13.5 volts across the terminals.
but absolutely nothing when i turn the key.
no lights not even a glimmer.
checked the fusses all good there.

so jumped from the car and bingo.
started right up.

but when i check across the battery terminals at idle
it shows 16 volt .
this is on the bad battery still waiting on the new one.

is it charging to much because the battery if fucked
or does this point to a regulator issue.

obviously electrix are not my forte.
any help is appreciated.
mark

two-stroke-brit · Post by **two-stroke-brit** » Fri May 24, 2019 9:00 pm

well the battery arrived quickly

starts right up ,but the idle was a bit high and no need for choke.
put the min parts on for a test ride and the misfire is gone .
and revs to 10 k with ease(short test road).
mark

Post by **Stig** » Fri May 24, 2019 10:30 pm

Check voltage to make sure regulator is ok

Batteries on these have a HUGE impact on the bike and it's running

two-stroke-brit · Post by **two-stroke-brit** » Sun May 26, 2019 1:07 am

Stig wrote:Check voltage to make sure regulator is ok

Batteries on these have a HUGE impact on the bike and it's running

.

thanks stig , i just checked 14v @idle and 15.3v @ 3000 rpm which i think is about right.

cheers mark

Post by **Stig** » Sun May 26, 2019 6:34 am

I'm no electric expert but that seems high. Think 14.4 is about max for healthy regulator

Someone might be able to confirm???

two-stroke-brit · Post by **two-stroke-brit** » Sun May 26, 2019 4:45 pm

i though so as well at first, i had seen somewhere a recommended range of 13.8v to 14.8v.
but on page 8-38 or 351 of the service manual however you look you up,
it shows @3000 rpm 14.3v to 15.3v.

this bike is a 89 but i have a 94/95 parts bike i could swap the alternator over from.
is that a big job to do ?.
thanks mark

two-stroke-brit · Post by **two-stroke-brit** » Mon May 27, 2019 4:04 pm

i see the regulator rectifier are mounted on the starter ,
which i would think would be an easy swap to test.
cheers mark

two-stroke-brit · Post by **two-stroke-brit** » Sat Jun 01, 2019 5:48 pm

that should of read alternator/generator .

well i swapped it out for the 94 and it made no difference.

so i guess its not the reg or rectifier .

so swapped the relays under the seat.

still no change.

i am stumped now

any suggestions are appreciated .

mark