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My Motion Pro mercury carb sticks' clear hoses are shot. What should I order to replace them? How do I get what looks like water out of the tubes?Thank you.
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Chris V
replied 19 months ago
Hello Charlie,
Standard clear vinyl tubing in the correct size will work fine for your carb tuner.
In regards to the water in the tubes, it is likely that condensate (fuel and/or water) has formed and has partially mixed with the mercury. This is normal and two methods of clearing the tubes are possible. One method involves removing the rubber hose from the vacuum adapter and gently blowing into it until air bubbles are gently forced into the reservoir. This forces the condensate into the reservoir where it will float on the surface of the mercury. Note: this method does potentially expose you to mercury vapors. The alternate method involves using a syringe without a needle rather that blowing from the mouth. The remainder is the same as the first method. The condensate does not weigh much when compared to mercury and as a result the error caused is negligible. The fuel segment of condensate can be kept to a minimum by either warming the engine up to operating temp prior to connecting the manometer, or by pinching off the vacuum lines with plastic hemostats that are available from tool trucks for that purpose until operating temperature is reached. Water condensate is unavoidable due to the “atmospheric” conditions present in the intake tract at idle.
Standard clear vinyl tubing in the correct size will work fine for your carb tuner.
In regards to the water in the tubes, it is likely that condensate (fuel and/or water) has formed and has partially mixed with the mercury. This is normal and two methods of clearing the tubes are possible. One method involves removing the rubber hose from the vacuum adapter and gently blowing into it until air bubbles are gently forced into the reservoir. This forces the condensate into the reservoir where it will float on the surface of the mercury. Note: this method does potentially expose you to mercury vapors. The alternate method involves using a syringe without a needle rather that blowing from the mouth. The remainder is the same as the first method. The condensate does not weigh much when compared to mercury and as a result the error caused is negligible. The fuel segment of condensate can be kept to a minimum by either warming the engine up to operating temp prior to connecting the manometer, or by pinching off the vacuum lines with plastic hemostats that are available from tool trucks for that purpose until operating temperature is reached. Water condensate is unavoidable due to the “atmospheric” conditions present in the intake tract at idle.