Fuel pump on F2.. Odd issue - ZX6R Forum
 
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post #1 of 7 Old 04-10-2017, 02:45 AM Thread Starter
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Fuel pump on F2.. Odd issue

Guys & Gals
For those that haven't read my newbie intro I'm hoping someone can shed some light on an issue I'm having.
My fuel pump is wired up direct to the battery. As soon as I connect it the battery starts to cook/smoke & I have no dash lights...Nothing !..
Disconnect the pump & the battery stops cooking & I get my dash lights up.... Doesn't make any sense how 2 wires coming from the battery direct to the pump can have such an effect ?
Any ideas people or anyone had similar issues ?
Read some posts on here regarding direct pump to batt connection but only to solve a problem NOT create one !!
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post #2 of 7 Old 04-10-2017, 06:58 AM
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My guess is that the pump has an internal short. It's obviously a bad idea to direct wire it without some sort of fuse in line to limit the amount of current that can flow.

not knowing anything about the bike, the pump, or the wiring that an unknown party has jacked up, it's tough to tell you what to do to fix it.

First thing I'd do, is stop shorting out the battery. It's possible to generate enough hydrogen gas to make an explosive out of it. filled with acid.

"Basic stuff fellas. Use your head for something other than to break your next fall."

"There's this adage that we have 2 ears and one mouth so we should listen twice as much as we talk. Unfortunately with the Internet people have taken this old adage and turned it around. They have two eyes and 10 fingers so they think they need to post 5 times as much as they read. And since they have 10 fingers and one brain, they only have to think 10% of the time! "
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post #3 of 7 Old 04-10-2017, 07:17 AM Thread Starter
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Agreed on the internal short. There really can be no other explanation. New pump on order so hopefully that should solve it. Bodged wiring shouldn't be an issue as the guy I bought it from was only the 2nd owner & took it to local bike shop for anything it needed no matter how small.. He never even purchased paddock stands to lube the chain. Shop done it all lol so unlikely he messed with it tbh.
I'll update when new pump's fitted.....
Cheers for the input bud...
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post #4 of 7 Old 04-10-2017, 08:09 AM
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Quote:
Originally Posted by SY69 View Post
Agreed on the internal short. There really can be no other explanation. New pump on order so hopefully that should solve it. Bodged wiring shouldn't be an issue as the guy I bought it from was only the 2nd owner & took it to local bike shop for anything it needed no matter how small.. He never even purchased paddock stands to lube the chain. Shop done it all lol so unlikely he messed with it tbh.
I'll update when new pump's fitted.....
Cheers for the input bud...
If you are going to leave the starter direct wired, I'd suggest adding an inline fuse so you pop that rather than destroy the battery next time.

"Basic stuff fellas. Use your head for something other than to break your next fall."

"There's this adage that we have 2 ears and one mouth so we should listen twice as much as we talk. Unfortunately with the Internet people have taken this old adage and turned it around. They have two eyes and 10 fingers so they think they need to post 5 times as much as they read. And since they have 10 fingers and one brain, they only have to think 10% of the time! "
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post #5 of 7 Old 04-11-2017, 03:45 AM Thread Starter
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Yeah... Definitely going the inline fuse route but it's also been suggested that an inline resistor is needed on the + ?
What I'm trying to understand is why this is an issue now & it hasn't been in the past...
Maybe so long sitting around & all of a sudden getting switched on caused the pump to short ? Mmmmm...
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post #6 of 7 Old 04-11-2017, 04:46 AM
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Quote:
Originally Posted by SY69 View Post
Yeah... Definitely going the inline fuse route but it's also been suggested that an inline resistor is needed on the + ?
What I'm trying to understand is why this is an issue now & it hasn't been in the past...
Maybe so long sitting around & all of a sudden getting switched on caused the pump to short ? Mmmmm...
It doesn't really need to short, so much as the bearings might freeze up, and the motor cannot turn..... it will take as much power as it needs to, in an effort to make the motor spin.... pretty much the same thing as a short.

"Basic stuff fellas. Use your head for something other than to break your next fall."

"There's this adage that we have 2 ears and one mouth so we should listen twice as much as we talk. Unfortunately with the Internet people have taken this old adage and turned it around. They have two eyes and 10 fingers so they think they need to post 5 times as much as they read. And since they have 10 fingers and one brain, they only have to think 10% of the time! "
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post #7 of 7 Old 04-11-2017, 05:21 AM Thread Starter
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Aaah... I see..Makes sense that!
I've done some spannering on previous bikes but nothing along the fueling/Electrical side of things so all a bit new to me.
I'm wondering though that if the pump is directly wired from the battery would it not be pulling power constantly ?..
I mean. How does it know when to prime if it's no longer part of the ignition cycle ?
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