Only runs on reserve

[Paulgello]

I recently purchased a 2007 ninja 250 about a month ago and I'm currently loving it. However there are a couple small issues the bike has, one of which is that it only runs with the petcock switch turned to reserve. It runs completely fine with no issues when it's on reserve however if I switch to the "On" position within a minute or so the bike bogs down and dies out. I'm hoping you guys can help me out in fixing this somewhat issue because it forces me to reset my trip calculator and get gas every 80 miles or so because I'm afraid I'll run out of gas far from home

[csmith12]

Welcome Paul!

Sounds like you need to rebuild or buy a new petcock.

[Paulgello]

Originally Posted by csmith12

Welcome Paul!

Sounds like you need to rebuild or buy a new petcock.

Thanks for the welcoming! Is a rebuild particularly hard to do for someone who's never worked on one before (this is my first bike) or should I just get a new one?

[csmith12]

It's a piece of cake, but... a new/used one is cheap enough.

Have a peek here to see the steps and decide if you wanna have a go at it.

Here is a cheaper option that might work for you as well. Not 250 specific, but should work fine just the same.

Link to original page on YouTube.

[cadd]

Sounds like a vacuum issue? Somehow, the gas may not be flowing to the carbs. When it's on reserve, gas is gravity fed to the carbs. When it's in the normal position, it's vacuum fed.

The rebuild should do the trick.

[Motofool]

Originally Posted by Paulgello

I recently purchased a 2007 ninja 250 about a month ago and I'm currently loving it. However there are a couple small issues the bike has, one of which is that it only runs with the petcock switch turned to reserve. It runs completely fine with no issues when it's on reserve however if I switch to the "On" position within a minute or so the bike bogs down and dies out. I'm hoping you guys can help me out in fixing this somewhat issue because it forces me to reset my trip calculator and get gas every 80 miles or so because I'm afraid I'll run out of gas far from home

Welcome, Paul !!!

The 2007 is a great bike; congratulations

You cloud try the simple trick of counter-blowing the petcock when in the ON position.

There is an internal mesh filter that may have become clogged if gasoline was left inside the tank to slowly evaporate during several weeks or months.

[Ghostt]

Your petcock is shot, save your time, and money and get a new one, the cost of rebuilding it isn't much cheaper, due to you need two separate kits, as they for some reason don't make just one.

New one cost about $65.00

http://www.partzilla.com/parts/detai...1023-1139.html

Also be sure to order the orings(92022-183 WASHER,6.2X11X1.5)and new bolts(92001-1091BOLT,6X20),trust me you'll be better off in the long run.

Rebuilding kits are about $60 total.

K&L Supply Diaphragm Only for Fuel Petcock Repair Kit 18-6638 https://www.amazon.com/dp/B0055DWO60..._s1CGub1W9N3PH

K&L Supply Fuel Petcock Repair Kit 18-2723 https://www.amazon.com/dp/B001KO2JRW..._U1CGub05DT5NT

IMHO not worth it rebuilding, also be sure to check vacuum and fuel lines for wear, holes, and cracks, if in doubt replace them.

[spooph]

Originally Posted by cadd

Sounds like a vacuum issue? Somehow, the gas may not be flowing to the carbs. When it's on reserve, gas is gravity fed to the carbs. When it's in the normal position, it's vacuum fed.

The rebuild should do the trick.

Whether you choose to replace to rebuild, you're going to have to remove the tank and remove the petcock from the tank.

You might as well disassemble the petcock - go slow, take picture, take notes as to how it all goes together so you can put it back together if needed, so you can figure out what's wrong with it. Is the blockage on the primary fuel filter, or inside the petcock primary fuel circuit? Is it the rubber seal inside the vacuum switch that has degraded?

Might be a proper cleaning is all you need and that's even cheaper than a new petcock... Plus, you start learning about your bike...

[agentbad]

Originally Posted by Ghostt

Your petcock is shot, save your time, and money and get a new one, the cost of rebuilding it isn't much cheaper, due to you need two separate kits, as they for some reason don't make just one.

New one cost about $65.00

http://www.partzilla.com/parts/detai...1023-1139.html

Also be sure to order the orings(92022-183 WASHER,6.2X11X1.5)and new bolts(92001-1091BOLT,6X20),trust me you'll be better off in the long run.

Rebuilding kits are about $60 total.

K&L Supply Diaphragm Only for Fuel Petcock Repair Kit 18-6638 https://www.amazon.com/dp/B0055DWO60..._s1CGub1W9N3PH

K&L Supply Fuel Petcock Repair Kit 18-2723 https://www.amazon.com/dp/B001KO2JRW..._U1CGub05DT5NT

IMHO not worth it rebuilding, also be sure to check vacuum and fuel lines for wear, holes, and cracks, if in doubt replace them.

You can reuse the bolts and the nylon washers can be found at Lowes.

[Ghostt]

Originally Posted by agentbad

You can reuse the bolts and the nylon washers can be found at Lowes.

Sometimes the bolts strip the heads, due th awesome Japanese metal, and if you do get washers from another source, make sure they are approved for gasoline use.

[Motofool]

Originally Posted by Paulgello

Thanks for the welcoming! Is a rebuild particularly hard to do for someone who's never worked on one before (this is my first bike) or should I just get a new one?

Any updates ???