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#16 bbuckler ONLINE  

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Posted December 12, 2016 - 02:20 PM

Cam lobes and lifters look a little worn but not bad.

 

If the Intake valve is not seating correctly it will cause the Carb to leak no matter how many times you rebuild it.

 

You need to lap your valves real good and check your clearances again.Model 320000 Briggs valve clearances should be (Intake .007-.009)  (Exhaust .017-.019)

 

I'm betting that after you lap your valves the intake valve will be rite in spec but you will have to grind a little off of the exhaust valve stem.

 

I had the same problem on my SS14.Carb would puke fuel all over the place until I lapped the valves.I had to grind my exhaust valve stem down almost .010.It's because over time the seat gets a little worn from the heat and the valve smashing down on it.The seat might have overheated a few times if it was run lean.

 

Do you have Both governor springs installed? They have a Hi Speed and Low speed governor spring.

 

Here's a couple good videos on the Governor and how they work and how to adjust it.

 

 

Here's how you set your Governor.

 

https://youtu.be/2IxRyfSvDY0?t=7m40s

It wont lap down any more



#17 Bruce Dorsi ONLINE  

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Posted December 12, 2016 - 05:42 PM

As Eric said, Model 320000 Briggs valve clearances should be (Intake .007-.009)  (Exhaust .017-.019)

 

Your  .010" intake valve clearance is close enough to not be an issue.

 

Your  .010" Exhaust valve clearance needs to be increased.   ....If you use a grinder on the end of the valve stem, it is very easy to remove too much material.  ....It can easily be done by rubbing the valve stem back & forth on a metal file.  ...You only need to remove .008" from the end of the valve stem.

 

Check your clearance often as you file the end of the valve stem to prevent removing too much metal.

 

If the valve face and valve seat look good after lapping, the seats only need to be refaced to decrease the valve clearance.

 

The foolproof way to check valve clearances without having the compression release being a factor is:

 

Check intake valve clearance while the exhaust valve is fully raised.

 

Check exhaust valve clearance while the intake valve is fully raised.


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#18 bbuckler ONLINE  

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Posted December 12, 2016 - 07:08 PM

 

 

If the valve face and valve seat look good after lapping, the seats only need to be refaced to decrease the valve clearance.

 

 

 

Valve face looks good I even did the marker trick on it. I'm guessing refacing would need to done at the machine shop since I don't have the tools shouldn't cost to much for them to do it.



#19 JBRamsey ONLINE  

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Posted December 12, 2016 - 08:46 PM

Good blue spark, adequate compression, air, and fuel is all u need!:)[/quote]

And in the right order.

#20 olcowhand ONLINE  

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Posted December 12, 2016 - 10:49 PM

Doesn't sound like governor is adjusted or sprung right, as it isn't opening the throttle under load, or shutting the throttle down when load is off. 



#21 Bruce Dorsi ONLINE  

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Posted December 12, 2016 - 11:55 PM

Valve face looks good I even did the marker trick on it. I'm guessing refacing would need to done at the machine shop since I don't have the tools shouldn't cost to much for them to do it.

 

From everything you have written, your valve seats do NOT need to be refaced.

 

You need to increase the exhaust valve clearance.


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#22 bbuckler ONLINE  

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Posted December 18, 2016 - 10:38 PM

I will get another video tomorrow. I was wrong on the exhaust it pass the max allowed needs more clearance 


Edited by bbuckler, December 18, 2016 - 10:38 PM.


#23 bbuckler ONLINE  

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Posted December 19, 2016 - 03:55 PM

I after I put the governor back in the valves look in spec now kinda of strange . There is a tiny bit of carbon on the intake valve seat that didn't come off with lapping could that be where it leaking.



#24 bbuckler ONLINE  

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Posted December 21, 2016 - 11:58 AM

Got back together  and still hear air around the intake and gauge is showing 40%






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