fuel petcock problem

[TomJK]

Hi
I use the Hardi 13312, asked the guy who mounted one in the old type FJ1200, he just used the 12 volt that drives the CDI and so that will go over the killswitch, over a relays, the bike runs fine, pumping stops as floats are up, like the normal fuelpumps in the FJ, no more extra actions needed, no problems, has run a over 1000 miles now.
It seems a lot easier than sticking to the old petcock rubbish.
Cheers, Tom.

[Old Rider]

Hi
I use the Hardi 13312, asked the guy who mounted one in the old type FJ1200, he just used the 12 volt that drives the CDI and so that will go over the killswitch, over a relays, the bike runs fine, pumping stops as floats are up, like the normal fuelpumps in the FJ, no more extra actions needed, no problems, has run a over 1000 miles now.
It seems a lot easier than sticking to the old petcock rubbish.
Cheers, Tom.

But lets say someone with a older type fj 1200 wants to convert to a hardi fuel pump. Can they just use the old style petcock or du they need to buy a new type fuelpump petcoock first ?  im asking because the old style petcoock is opened with vacuum and what about the vacuumhose then ? Does the newer type fuelpump petcoock fit on a 86-88 fueltank ? Where on the bike do you fit the Hardi pump ?
I think the old style petcoock works perfect exept when it starts to leak after 30+ years.

[Pat Conlon]

......It seems a lot easier than sticking to the old petcock rubbish.

Also to consider....with a fuel pump, you can now use a "real" fuel filter.
Something to think about as our steel fuel tanks get older.

[red]

But lets say someone with a older type fj 1200 wants to convert to a hardi fuel pump. Can they just use the old style petcock or du they need to buy a new type fuelpump petcoock first ?  im asking because the old style petcoock is opened with vacuum and what about the vacuumhose then ? Does the newer type fuelpump petcoock fit on a 86-88 fueltank ? Where on the bike do you fit the Hardi pump ?  I think the old style petcoock works perfect exept when it starts to leak after 30+ years.

Old Rider,

The vacuum-actuated petcock has a selector switch, for Off-On-Prime.  Off means off, On means vacuum actuated, and Prime means free-flowing.  If you added a fuel pump, I believe you could set the vacuum petcock to the Prime setting (just a twist of the screwdriver) and forget it.  Cap off the vacuum line for the petcock, certainly, where it goes into the intake system. 

Please be aware that in an accident, the added fuel pump will not shut off when the engine stops, where the vacuum petcock would shut off then.  You may want a tip-over switch (or similar safeguards) to prevent the fuel pump from running after an accident.  If the fuel system is damaged then, the fuel pump could empty the tank, creating a serious fire hazard, unless you can shut off the power to the fuel pump.
.

[Pat Conlon]

I use the Hardi 13312, asked the guy who mounted one in the old type FJ1200....

I was reviewing the Hardi 13312 specs and I see it's a diaphragm pump
https://www.timelessautoparts.com/product/hardi-fuel-pump-13312/

Question for Tom, when this pump is off, does it hold back the flow of fuel?
Some do, some don't....

You want to use a pump that holds back the fuel flow (from tank head pressure) when not running.

.....Please be aware that in an accident, the added fuel pump will not shut off when the engine stops, where the vacuum petcock would shut off then.  You may want a tip-over switch (or similar safeguards) to prevent the fuel pump from running after an accident.  If the fuel system is damaged then, the fuel pump could empty the tank, creating a serious fire hazard, unless you can shut off the power to the fuel pump.
.

I'm with Red on this one....if your engine stops, the fuel pump should stop.....period.
The fuel pump safety controller in my link is only $65, which is chump change considering the consequence.

I was in a sudden low side accident where my bike ended up 50 ft away from me. With my chest injury I could not get over to turn my bike off, so I know first hand that there are times when a fuel pump safety switch is a damn good idea.

[Old Rider]

The vacuum-actuated petcock has a selector switch, for Off-On-Prime.  Off means off, On means vacuum actuated, and Prime means free-flowing.  If you added a fuel pump, I believe you could set the vacuum petcock to the Prime setting (just a twist of the screwdriver) and forget it.  Cap off the vacuum line for the petcock, certainly, where it goes into the intake system. 

Please be aware that in an accident, the added fuel pump will not shut off when the engine stops, where the vacuum petcock would shut off then.  You may want a tip-over switch (or similar safeguards) to prevent the fuel pump from running after an accident.  If the fuel system is damaged then, the fuel pump could empty the tank, creating a serious fire hazard, unless you can shut off the power to the fuel pump.
.

The 86-88 FJ1200 does not have a selector switch only the FJ1100 or FJ1200 made after 1991 has  .So if i wanted to convert to a pump i think i had to replace the petcock with a 1991 petcock (if it fits the tank) or the FJ1100 petcock.

[Pat Conlon]

The 86-88 FJ1200 does not have a selector switch only the FJ1100 or FJ1200 made after 1991 has  .So if i wanted to convert to a pump i think i had to replace the petcock with a 1991 petcock (if it fits the tank) or the FJ1100 petcock.

Nope, Sorry, the '89-95 fuel pump petcocks will not fit the early '84-87 fuel tanks.

Like I said, if you have a 86/87 petcock, you need to replace it with a 84-85 petcock (with Prime function)...or convert over to a aftermarket manual Pingel petcock (see my RPM link)

....or convert over to a '89-95 fuel pump tank and petcock...but that's silly.

[TomJK]

Hi
It stops fuel coming through when engine is off or kill-switch is on.
Cheers, Tom.

[ribbert]

The fuel pump safety controller in my link is only $65, which is chump change considering the consequence.

Pat, I can't find the link you refer to.

Noel

[fj1289]

The fuel pump safety controller in my link is only $65, which is chump change considering the consequence.

Pat, I can't find the link you refer to.

Noel

Noel, it's in the bottom post on page 1.  In paragraph 3)
It's been a couple days

[ribbert]

Noel, it's in the bottom post on page 1.  In paragraph 3)
It's been a couple days

Thanks Chris, I found it.

Noel