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Author Topic: auto petcock cleaning?  (Read 1177 times)

chaz35

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auto petcock cleaning?
« on: January 12, 2015, 04:50:12 AM »
Does anyone ever clean the auto petcock?, or is it a disposable item, and just replace it when it starts acting up?  Any comments welcomed.  Cheers
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zombie

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Re: auto petcock cleaning?
« Reply #1 on: January 12, 2015, 06:55:05 AM »
It's a throwaway. You can remove it, and up inside the tank there is a micro mesh screen that needs to be cleaned but the petcock can not be serviced. Sometimes you can free it up (short term) by blowing, and sucking on the vacuum line until you here it start to "click" again.
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chaz35

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Re: auto petcock cleaning?
« Reply #2 on: January 12, 2015, 03:56:20 PM »
OK, thanks for reply.  Cheers
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BettinANDlosing

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Re: auto petcock cleaning?
« Reply #3 on: January 12, 2015, 04:24:45 PM »
What i do sometimes when they stick off is blow compressed air up the vacuum line and it usually pops stuck open, then you can use a manual petcock.
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chaz35

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Re: auto petcock cleaning?
« Reply #4 on: January 13, 2015, 03:01:23 PM »
I thought would be hard to clean.  Not sure what to soak in being plastic.  Any powerful cleaner would probably destroy it.  It needs a vacuum pulled on pulse side, not easy to do, I don't have a tool to do that.

Kart engines normally have pulse fuel pumps to pump fuel to the carb.  Some are metal and rebuildable, and some are plastic.  The plastic ones, when they malfunction, you replace with new.  Even the metal ones when rebuildt don't seem to work properly, so best to just replace them too.  I remember Art having a problem getting enough fuel to the carb, a fuel pump would have solved his problem.  I would post to his thread, but I think he is no longer active.

I would install a manual petcock, just haven't figured out a good place to locate it.  Maybe will look at it again today.

These work really well:

http://www.ombwarehouse.com/Briggs-and-Stratton-494768-1-4-Fuel-Shut-Off-Valve.html

Cheers
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