vro2 pump

DRFTWD

Cadet
Joined
Oct 30, 2017
Messages
7
does anybody know what the pressure and vacuum is to operate the pump? I have a vro2 pump on an evinrude 200, model VE200SLEID, The pump has been rebuilt and passes the bench checks.
 

clanton

Rear Admiral
Joined
Jul 9, 2001
Messages
4,876
Where are you checking tis vacuum and pressure? Fuel pressure 3 lbs. at idle.
 

DRFTWD

Cadet
Joined
Oct 30, 2017
Messages
7
Tested per flo chart for vro pump. Also checkedl output pressure.passed all these tests. Trying to measure the pressure/vacuum cycle to determine if the problem lies there, Thining bad crank seal or reed for the driving cylinder.
 

Faztbullet

Supreme Mariner
Joined
Mar 2, 2008
Messages
15,932
Worn skirts on piston will also cause this as crankcase pressure is to low to overcome spring in air motor. Will run on top end but will run out of fuel at idle...
 
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