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diy leak down tester


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If you don't mind buying an actual tool a Mity Vac MV8500 is a nice kit to have. Comes with different size plugs for plugging lines. Brake bleeder cup / kit. The pump can do 30 PSI of pressure or 25 InHg vacuum. It has a gauge and is air tight. I just tested a Trevor Simpson 30.5cc motor that I built for my HPI Baja. It held 10 PSI of pressure for 20 min, and 15 InHg for 20 minutes. No leakage at all from the motor or the pump / gauge.

 

Here is the kit I am talking about. You will still need intake and exhaust plugs of some sort.

http://www.ebay.com/itm/Mityvac-8500-Silverline-Elite-Hand-Vacuum-PumpTest-Kit-MV8500-Mity-Vac-/330855939448?pt=Motors_Automotive_Tools&hash=item4d088cfd78&vxp=mtr

 

MV8500_01.jpg

$(KGrHqZ,!joE1J3JY!8NBNdrf43Edg~~_12.JPG

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