Compression test

dabranco · 11-18-2011, 01:30 AM

Finally got to do a compression test on 2 of the spark plugs port before the tester failed. Anyway here is what I got:
Front rotor top plug: 95PSI max and drops to 0
Rear rotor top plug: 90PSI max holds steady
I will get a new tester and test the bottom 2 plugs tomorrow.

Also does a 12A have an electric pump, if so I know it is hard wired into my headlight switch. and my carb fills with gas as it doesn't shut off so I get to play find WTF the previous owners did.

racer0954 · 11-18-2011, 08:03 AM

Hi new here about the carb a few thing that can OVERFILLED a carb 1) high pressure pump ( higher than the carb was design to handle) 2) flow bowl not closing fuel valve

11-18-2011, 01:30 AM	#1
dabranco Rotary Fan in Training Join Date: Nov 2011 iTrader: (1) Posts: 47 Rep Power: 0	Compression test Finally got to do a compression test on 2 of the spark plugs port before the tester failed. Anyway here is what I got: Front rotor top plug: 95PSI max and drops to 0 Rear rotor top plug: 90PSI max holds steady I will get a new tester and test the bottom 2 plugs tomorrow. Also does a 12A have an electric pump, if so I know it is hard wired into my headlight switch. and my carb fills with gas as it doesn't shut off so I get to play find WTF the previous owners did.

11-18-2011, 08:03 AM	#2
racer0954 The Newbie Join Date: Nov 2011 Location: ORLANDO iTrader: (0) Posts: 3 Rep Power: 0	problem carb Hi new here about the carb a few thing that can OVERFILLED a carb 1) high pressure pump ( higher than the carb was design to handle) 2) flow bowl not closing fuel valve