Starting problems

I just got a 97 600 Seca II. It will turn over but will not start. It has spark so I believe it's a fuel problem. I've read that i can manually check the fuel pump but I cannot tell where I hook the pos. and neg. leads to(it's some relay). I think it has something to do with the fuel pump because the pump does not run for 5 seconds to fill the carbs when you first turn the key on. Ayways appreciate the help and I can't wait to hear her run.

 

If the float bowl is full it doesn't matter what the fuel pump is doing.
If you just got a 10 year old bike you will definitely have to clean the carbs!
The starting jets and pilot jets are probably clogged so it isn't getting any fuel.
Clean them once, the a couple more times and you should be in good shape.
In Arizona I have to clean mine at least twice a year when they are in good shape and over a dozen times when I first got it to get it running good enough to idle since they were really dirty to begin with.

 

OK...Well it's pumping fuel I simply disconnected the outlet hose and put into a jug, cranked it over and out came fuel. BTW it's a vacuum pump and I was looking for wires(I'm definately a newb). Anyways I got it from a friend and he already said he cleaned the carbs but I will definately tear it apart and check it out. Thanks.

 

You will need to determine what the problem really is. It may not actually be the Fuel Pump; but you'll have to test that too.

Try starting the Bike by letting Propane Gas from your Propane Torch into the Airbox intake. If the Bike fires-up on the outside source of fuel ... you have to troubleshoot the fuel system.

Undo the Supply line from the Petcock to the Carbs and see if the Fuel Pump will come on and let fuel fill into a Gas Can or Gallon Jug.

If the Fuel Pump runs fuel into the Jug, you are going to have to investigate the Carbs.

Investigating 10-year-old Carbs means Cleaning them. The Horizontal Carbs on your bike are Cleaned in the same manner that an older set is Cleaned.

You'll have to take them off the Bike and strip them down to component parts and clean the rack of the effects of age and any foreign matter that accumulated in the Fuel Bowls and Jets over the years.

Combined with the fact that your Fuel Pump might be clogged ... you have your work cut-out for you.

See if you can find a Member who own a Later Model Bike like yours to help out with the chore.

You have extra plumbing to deal with than a Classic XJ-Owner. The older Bikes are straight gravity feed. Keep the lines and canisters labeled.

Some Fuel Pumps can be flushed-out ... on-the-bench ... by hooking-up the Pump to 12 Volts -- Backward -- and letting the Pump run in reverse direction.

 

Are there gaskets or anything I'll need to replace after tearing the carbs apart to clean them?

 

There might be a need to replace the Fuel Bowl Gaskets if they get torn0up removing the Fuel Bowls.

If they survive intact ... you can reuse them. Most folks do; although new ones are a nice touch.

 

One more question...Can the o-ring on the needle valve seat be replaced by any o-ring or do I have to buy the whole valve seat assembly from Yamaha?

 

I got a whole Package for $2.99

They were hanging up in the Plumbing Section of Home Depot!

Bring the Old O-ring and size-it-up with the ones in the Plastic Hanging Packs.

 

See, it's this sort of thing that makes me glad I found this site. Stuff that saves me money over HERE means I can spend money replacing mirrors and fork seals over THERE.

Thx, Rick.

--J

 

Good deal. That will save me 120 bux. I kinda figured they weren't special.
Thanks.