1992 Suzuki King Quad Too much fuel

[Alex91]

I have a 92 suzuki king quad that seems to be getting way to much fuel in my spark plug hole as I took out plug cranked it over and covered myself in fuel I cleaned carb and fuel filter and fuel pump all seems fine any other ideas

Edited April 3, 2019 by Admin
Added ATV info and moved to Suzuki ATV Forum

[Frank Angerano]

Have you done anything like rebuild the carburetor?

bike been sitting ?

air filter and air box all clear ? 

 

[Alex91]

Yeah I got it done professionally and no it ran but not good I played with the valves tonight got it to run a bit but wouldn't idle I'm thinking it has to do with my valves so I'm going to get them done professionally done and go from there 

[Frank Angerano]

Gotcha.  Keep us posted if it does not work out we can help.  

Good luck.  

[Alex91]

Thanks man appreciate that

[Ajmboy]

My first guess is carb related. Good luck with it!

[JacobSlabach]

maybe it flooded and was hydro-locked?  That's what my sportsman did when I bypassed the fuel pump...  overflowed and hydro-locked the engine while sitting..

[Alex91]

It turns over runs well only when choke is on but does not idle I think it's time for a new carb and get my valves looked at as I think they are off as well

[JacobSlabach]

I would clean the carb first.  Fairly easy to do and just because some pro did it doesnt mean he didnt screw it up

[flyinbrian365]

If it is only staying running with the choke on, the slow speed pilot jet is plugged. Sounds like this so called "professional" didn't clean it thoroughly or correctly. 

Also if it's dumping that much fuel into the cylinder the float is either sticking or set at the incorrect level.

[Alex91]

So it idles very well but has no top end bought another carb kit did that new diaghram for my fuel pump no more excessive fuel but now have no top end my one top valve is ticking I did the valves at .003 intake and .007 is that correct for the 92 suzuki king quad 300

[Frank Angerano]

Try to adjust the air/fuel mixture screw. What’s it set at now ?

valve clearance should be 0.03 mm Intake and 0.17 mm exhaust based off a similar year same engine size manual.

[Alex91]

Oh okay...thanks for that and air to fuel is set at 2 5/8 

[Frank Angerano]

Try a 1-3/4 turns as a starting point and go out to 2-3/4 if needed as the bikes running.

Adjustments should only be made with the air filter installed and cover on as if the bike was ready to ride.  

As it’s running the rpms should climb as you adjust.   The higher the rpm the better.  As soon as the rpms start to drop STOP right there and go back a slight bit.  If the bike idles high lower the idle screw a little bit and you should be set.  

[Alex91]

When doing your valves you put it to top dead center then do your valve clearance correct? That's how I seen it done in the vedio on YouTube lol

Your awesome thanks so much man I do everything myself usually I rebuilt the whole engine but this damn carb has been hell 

[David Peterson]

Check to see if you have a vacuum operated fuel petcock and the fuel pump diaphragm. A leak in either or both of the diaphragms will let fuel by pass the carb and go into the engine. They will make you think you have a bad carb.  If have excessive fuel in the cylinder be sure to check you oil for fuel too.

[Frank Angerano]

Yes TDC the cylinder on a combustion stroke. 

You will see on all my post regarding carbs. They are a pain in the as*, frustrating and can make you bat sh** crazy! Take a step back and breathe.  It gets dialed in sooner or later. A lot of the times it’s later ! But you will figure it out.  And all adjustments need to be done with the air box and filters all assembled.  I see all the time people make adjustments with the air filter or air box cover off,  take the bike for a ride and boom then when they put the air box back together it’s not right ??? It has to be adjusted as of it were ready to ride .  

[seppi]

If you're getting that much fuel ,float is stuck down or out of adjustment ! Another problem could be dirt under fuel inlet valve or worn out . Is it gravity fed on this model or does it have a fuel pump ?? If it has a fuel pump could also have a hole in the engine side diaphragm of pump !!

 

 

       Seppi

[Colin Hyde]

My KQ 300 has had a new diaphragm kit fitted to the vac pump (self rebuild) and although vacuum is present, will not pump? kit inluded new diaphragms, check valve disks and springs....what is there to get wrong?

[Frank Angerano]

Have you tried to prime the pump? 

[Andrzej Polak]

in my ltf300 the vacuum pump looked tragically. full of rust. cleaning a little helped, but I am looking for a new one