Bike turns over on first try but not second....

[JWR]

Originally Posted by Kayrub

A batter tender it read 100% charge and it did have a 12.8 reading on the voltage.
I've never jumped it from a car before.

A tender will not charge a battery in 1 or 2 hours.....

Most tenders put out .5 to 1.5 amps per hour. The battery is 6.5 to 11 amps.(if I recall )

So divide amps of charger into amps of the battery...this is how long you need to charge the battery.

1. charge battery over night.
2. if it will not start boost it.

It is really that simple.

[blaine]

Originally Posted by mrlmd1

Also if you measure the resting battery voltage as a baseline and then get the bike started, then rev it up to 3000 rpm or more, the voltage at the battery should read 13.5-14V and that tells you the charging system is OK.

I think you have a charging problem.The battery goes dead after the first start,indicating that the battery is not been charged back up.You state that you rode about 10 miles,long enough to run the battery down if the bike is not charging.

:??: :cool:

[Kayrub]

Originally Posted by JWR

A tender will not charge a battery in 1 or 2 hours.....

Most tenders put out .5 to 1.5 amps per hour. The battery is 6.5 to 11 amps.(if I recall )

So divide amps of charger into amps of the battery...this is how long you need to charge the battery.

1. charge battery over night.
2. if it will not start boost it.

It is really that simple.

I didn't use the tender to charge it I used it to read what the voltage was and see if it also said my battery was at 100% and it did.

[Kayrub]

Originally Posted by mrlmd1

The mechanic replaced your starter? Did he test yours first to see if the original one would work connected directly to a good battery? Sounds to me like you should change your mechanic, not your starter, or spark plug. Spark plugs have nothing to do with the starter engaging or turning over, but a clean new plug never hurts (unless it's not gapped properly).

You never answered me - you are not leaving your rear parking lights on when you walk away from the bike, are you?

As a totally different problem, having NOTHING to do with the one you are presenting here, it would be a good idea to put some Seafoam or Berryman's B12 Chemtool in the gas tank, 1 oz/gal of fuel, to clean up the carb from fuel sitting in it for the past 5-6 months.

I replaced the starter, I don't leave the parking lights on.

[JWR]

What kind of charger???

[blaine]

Originally Posted by Kayrub

I replaced the starter, I don't leave the parking lights on.

I think you have a charging problem.The battery goes dead after the first start,indicating that the battery is not been charged back up.You state that you rode about 10 miles,long enough to run the battery down if the bike is not charging.

:??: :cool:

[mrlmd1]

My bet is still on the battery. What does the voltage read after sitting overnight, before trying to start the bike?, then after trying and not being able to start the bike?
The charging circuit health can easily be ascertained like I said by measuring the voltage with the engine running at least 3000rpm. 13.5-14.5V = healthy, not the problem.

[mrlmd1]

So what happened? What was the resolution to this?
Did I/we chase him away or did he solve his problem and move on? :??:

[blaine]

Originally Posted by mrlmd1

So what happened? What was the resolution to this?
Did I/we chase him away or did he solve his problem and move on? :??:

That kinda grinds my gears,some people never bother to report back to tell us if they need more help,got fed up with us, or solved the problem so it may help somebody else.That's my rant for the day.
O_o :??: