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#1 bbuckler ONLINE  

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Posted June 03, 2017 - 06:08 PM

I got the mower from Larry today in a trade and I adjusted the valves to 0.04 but still having the issue. I think I need to pull the head on it and look. The valves are moving but still seems to be a valve issue. I did find a dried up snake under the blower housing. 


Edited by bbuckler, June 03, 2017 - 06:57 PM.

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#2 secondtry OFFLINE  

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Posted June 03, 2017 - 06:15 PM

   I for one have no idea what you are talking about. My daughter once told me she was having issues. I told her not to get any on the couch.  Don


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#3 637Yeoman OFFLINE  

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Posted June 03, 2017 - 09:28 PM

I got the mower from Larry today in a trade and I adjusted the valves to 0.04 but still having the issue. I think I need to pull the head on it and look. The valves are moving but still seems to be a valve issue. I did find a dried up snake under the blower housing. 

what issue?


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#4 bbuckler ONLINE  

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Posted June 03, 2017 - 09:35 PM

what issue?

Backfiring thru carb


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#5 637Yeoman OFFLINE  

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Posted June 03, 2017 - 10:04 PM

Backfiring thru carb

Isnt there a way to control timing?



#6 bbuckler ONLINE  

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Posted June 03, 2017 - 10:12 PM

Isnt there a way to control timing?

Most the time I have dealt with a backfire issue it was a sticky valve. 



#7 637Yeoman OFFLINE  

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Posted June 03, 2017 - 11:51 PM

Most the time I have dealt with a backfire issue it was a sticky valve. 

I thought you were changing gap?



#8 Bruce Dorsi ONLINE  

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Posted June 04, 2017 - 07:36 AM

I got the mower from Larry today in a trade and I adjusted the valves to 0.04 but still having the issue. I think I need to pull the head on it and look. The valves are moving but still seems to be a valve issue. I did find a dried up snake under the blower housing. 

 

You didn't say what engine you are working on, but .040" clearance on the valves is probably too much.  .....If you meant .004", that's probably too little.


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#9 bbuckler ONLINE  

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Posted June 04, 2017 - 09:55 AM

You didn't say what engine you are working on, but .040" clearance on the valves is probably too much.  .....If you meant .004", that's probably too little.

Intek min is .004



#10 bbuckler ONLINE  

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Posted June 04, 2017 - 09:57 AM

I thought you were changing gap?

That what adjusting the valve is



#11 secondtry OFFLINE  

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Posted June 04, 2017 - 10:54 AM

  Running lean? Carbon build up in head? Valve burnt, Sticking? Don



#12 637Yeoman OFFLINE  

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Posted June 04, 2017 - 11:09 AM

That what adjusting the valve is

You said it was sticky, insinuating that it didnt open well, and when it did, it stuck open



#13 bbuckler ONLINE  

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Posted June 04, 2017 - 12:42 PM

  Running lean? Carbon build up in head? Valve burnt, Sticking? Don

Carbon was not so bad. Didn't look like been running lean maybe a hair rich but those carb are not adjustable. I pulling them out tomorrow and cleaning them and lap them real good. 


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#14 bbuckler ONLINE  

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Posted June 04, 2017 - 12:44 PM

You said it was sticky, insinuating that it didnt open well, and when it did, it stuck open

I always check valve clearance first to rule it out. 


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#15 secondtry OFFLINE  

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Posted June 04, 2017 - 07:58 PM

Carbon was not so bad. Didn't look like been running lean maybe a hair rich but those carb are not adjustable. I pulling them out tomorrow and cleaning them and lap them real good. 

  Running lean can be a vacuum leak. Don






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