« previous next »
Pages: [1]

Author Topic: auto petcock cleaning?  (Read 1143 times)

chaz35

  • Hero Member
  • *****
  • Posts: 711
  • old guy
    • View Profile
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
Logged
1st and 2nd usually have an unfair advantage.  3rd is usually the best, can learn the most from.  paraphrased from Don Quixote, over 400 years ago, still true today

zombie

  • You never know do ya!
  • Hero Member
  • *****
  • Posts: 13870
  • Close enough to get the idea!
    • View Profile
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.
Logged
"They have nothing in their whole imperial arsenal that can break the spirit of one Irishman who doesn't want to be broken."   Bobby Sands...

chaz35

  • Hero Member
  • *****
  • Posts: 711
  • old guy
    • View Profile
Re: auto petcock cleaning?
« Reply #2 on: January 12, 2015, 03:56:20 PM »
OK, thanks for reply.  Cheers
Logged
1st and 2nd usually have an unfair advantage.  3rd is usually the best, can learn the most from.  paraphrased from Don Quixote, over 400 years ago, still true today

BettinANDlosing

  • Hero Member
  • *****
  • Posts: 2235
  • Carter Merz
    • View Profile
    • Columbia Scooters
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.
Logged
2002 Kymco B&W 300; MRP 78MM "300CC", Naraku cam, Yoshimura rS3 exhaust, 17g Sliders, Yellow torque spring drilled airbox, stock carb #115 main #40 pj.

2001 "Yamaha" Zuma AKA MBK Booster; MHR OverRange, Dellorto 19mm BHBG, Polini "big" intake, RS-3 Rear shock, Stock cylinder.

chaz35

  • Hero Member
  • *****
  • Posts: 711
  • old guy
    • View Profile
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
Logged
1st and 2nd usually have an unfair advantage.  3rd is usually the best, can learn the most from.  paraphrased from Don Quixote, over 400 years ago, still true today

An Error Has Occurred!

Call to undefined function split()
Back