[[email protected]]

Just got a 97 zx9 had been sitting for 4 years. Cleaned carbs, replaced batt. , and spark plugs. Put air box on. It struggled to start. Would run but not idle. So I held held it at 4000 rpm. Ran and sounded good and then after 1 minute at around 4000 it died. I had a strong smell of fuel coming out of exhaust. So i checked spark. It was good. fuelfuelexexaus

 

[[email protected]]

I re cleaned idle jets only. Left air box off. Same problem but this time before it died fuel started misting out of intake ports and then died. And wouldn't start. It would fire after sitting for 30 min. I'm guessing fuel over load. So I replace pump and pump relay. Still same problem. I also pulled plugs and 1 plug was clean. 2 plug a little oil and 3 was a little worse than 2. And 4 was a little worse than 3. I can't figure it out and I need help. Any suggestion on where I should go from here? I'm pretty sure it might have been in an accident cause theres a new radiator and rear sets with scratches and tail section.

 

[jkv45]

Stuck floats would be my first guess from what you described.

It's the float/needle/seat's job to shut off the flow of fuel when it reaches the proper level in the float bowl. Doesn't sound like that is happening.


Jay

 

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I will try inspecting needle a lil better and replace the one that need to be replaced. Thank you

 

[jkv45]

If you remove the float bowls carefully you may be able to see if one or more has more fuel in it than the others. Sometimes a piece of crud gets stuck under the needle and holds it open. That may indicate rust in the tank.

 

[Blue Ghost]

Is this what you got?

http://www.youtube.com/watch?v=VLLZavItixY

If so, it's called reversion. Reversion is the flow of the air fuel mixture out of the cylinder and into back into the intake manifold. Reversion happens even on a stock engine because the piston is moving up the cylinder before the intake valve closes. This is usually a sign of a needed valve adjustment.

 

[[email protected]]

That's usefull. But mine will die once the fuel starts to mist. And won't start until its not flooded anymore. But since I'm going to have everything off I might as well check the valve clearance anyways. Thank you

 

[[email protected]]

So now I got the valves adjusted. It's still hard to start and won't idle. Feels and sound really good at high rpms. But will start bogging if i hold it around 5-6000 rpms. And then won't fire until after a 30 min wait. The float bowl needles seemed to be good. I cant figure it out. I'm getting so frustrated im ready to lite this bitch on fire

 

[[email protected]]

I'm thinking coils or throttle position sensor? Or??????????????????????????????????

 

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If anybody's still reading this and have similar problems might be useful. So I tested coil pak (with multimeter) coming from case. Also each coil. Also some other sensor that I don't know what it is. Then I found this sensor next to the top of the head on left side. Apparently it has a cam position sensor. Tested it. It showed resistance. Meaning bad sensor. I've invested 25 hours + on this

I think I just learned my lesson. Always start with the easiest things first.

 

[earlthepearl]

Usually it's always the last thing u check.....
No matter where u start....
Some kinda law......

:banghead::banghead:

Kinda like if something can possibly go wrong....
It will.....:facepalm:

 

[earlthepearl]

OOOOooo.... fergot to throw in the muffler bearing thing for the
Wineass's.....

:dance: :dance: :dance:

Little help over here IndyJoe on Country in the city.....

:whistling:
:whistling:
:whistling:
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