CBR 600F3 1995 - 1998 CBR 600F3 Forum

95 CBR600F3 Turns over and dies

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Old Sep 1, 2018 | 11:18 PM
  #41  
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I followed that procedure. The pump did fire. Do I continue to attempt to turn over the engine? Like I said, still no gas in the 3 bowls and minimal in the one so far. Could something else be causing the gas not to flow?
 
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Old Sep 2, 2018 | 07:35 AM
  #42  
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By jumpering the black and blue/black wires you can fill the carb bowls so it will fire right up without excessive cranking. That is assuming things are working right.
Some things to verify.
Are you certain you have good fuel flow coming out of the petcock?
There's no crimp in your fuel line anywhere?
Are you sure you have the in the in/out fuel lines correct on the pump? It's easy to get them swapped.
I would try the jumpering thing again and instead of sending fuel to the carbs, hook up a length of hose and see if you can witness the pump pushing fuel into a container.
 
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Old Sep 2, 2018 | 11:19 AM
  #43  
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The pump does run when jumped at the relay connector.

So I disconnected the hose from the petcock and opened the valve to the “On” position - Gas flow out nicely. I did noticed the petcock does not fully shut off the flow of gas when I switch to the “Off” position so I’ll need to replace the petcock at some point as well.

I reconnected the hose to the petcock and disconnected it where the hose enter the fuel pump. I opened the petcock to the “On” position and for a few moments, I got nothing, then finally I got some flow of gas. I did add a new fuel filter and triple checked that was not backwards before all this.

I reconnected the hose to the fuel pump intake, and disconnected the hose that exits the fuel pump. I jumped the fuel pump and it ran. Gas came out but I’d say it was at a trickle pace. Definetly not what I would think should be coming from the pump. I’d almost say it was the same flow the gravity would be causing. The pump was running at whole time.

I reconnected everything and let the pump run for a few minutes to see again if the bowls would fill. Same thing, no gas in the bowls.
 
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Old Sep 2, 2018 | 11:56 AM
  #44  
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You can totally bypass the pump to see if that helps. Sounds like it might be on it's way out.
 
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Old Sep 2, 2018 | 01:11 PM
  #45  
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BINGO!!!! SHES RUNNING

So I think the pump is going out. I have a new one on order. Might as well at this point.

So it is idling pretty darn good for not being synced yet. Got it hovering around 1500-1200. It bounces slightly (video below), but I don’t have the sync tool. Deciding whether I’ll get one for about $70 or take it in to the shop to have them tweak the bike from here.

Hamlin6, your the best. Thanks for taking the time and all the advice!!! Can’t tell you how much I appreciate it.

For anyone reading later on, pretty confident the carbs were the major issue after sitting 10 years. Very erratic trying to get the bike to turn over to start with. Sometimes it would turn over and maybe even idle, but die immediately when I gave it gas. Cleaning didn’t seem to work, but start there. I had it off 2 times prior to replacing the jets and was confident I had everything, obviously not. The jet kit did the trick and was easy. If you can get to the point of having the carbs off, I’d say installing a new jets kit will be easy at that point. Also, if your stripping down to the carbs, in my opinion it makes sense to replace items along the way if the bike has sat for years. Air filter, gas filter, spark plugs. Super cheap an worth the piece of mind.
 
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Old Sep 2, 2018 | 02:13 PM
  #46  
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Thanks for the kind words, I do appreciate them. Glad you are on track to get the girl back on the road. Keep us posted as you further your progress.
 
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Old Sep 4, 2018 | 10:07 AM
  #47  
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So I'm getting a quote for $150-$225 to sync the carbs. I found the sync tool is about $60-$90 online. I'm considering doing this myself as well for that price difference.

Question, would you recommend a liquid type such as this -
Amazon Amazon
or a gauge type such as this -
Amazon Amazon
 
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Old Sep 4, 2018 | 10:40 AM
  #48  
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I'm a fan of the gauge type. I've seen more people with that as well. But there's people out there that like the liquid kind. You can even make your own if you're so inclined. There's plenty of videos that show you how. The gauge kind sit well up near the bars while you're doing the job and you don't have to worry about hanging it off of something.
One thing to consider is you will need to rig up your fuel tank or have an alternate delivery method. It's not hard to do, just something to think about.
 
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Old Sep 4, 2018 | 11:25 AM
  #49  
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Ok, so I would need to rig up the gas tank in your opinion? I've seen people doing it both ways. I can understand maybe having done this before you could move quickly to complete the job before the gas in the bowls ran out, but having it rigged up probably would be a better solution for a rookie like myself I'm sure I could figure it out, just a little extra tubing to buy. I think I'm gonna go for it.
 
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Old Sep 4, 2018 | 12:51 PM
  #50  
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You will need to hook up something. You don't start the procedure until the engine is sufficiently warmed to operating temps. Depending on a lot of things, it could take 5 minutes, it could take an hour. It's an easy but tedious thing to do.
I purchased a separate fuel bottle from Motion Pro. It hangs.like an IV bottle. You don't have to spend the money on that, but you will need to have a place where you can sit your tank without it being in the way.
 
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