3/16 Jump starter

[325abn]

Yesterday I hooked up a small suction pump to a barely running 3/16 run. My thought is to give the line a jump start by applying the vacuum to get thing moving then disconnecting the mechanical suction and letting the natural take over. Initially the sap flowed quickly half way filling the suction container. I kept the 25mmhg suction on the line for 15 minutes or so. When I disconnected it the vac reversed in the line before equalizing.

I am going to hook up the suction pump to one of my 3 lines today when the temp get to 32 and see if this line runs any faster on the other 2.

Any thoughts on this?

[wnybassman]

I think your sucking the juice out of your lines which is what is giving your natural vacuum the ability to work

[motowbrowne]

I think your sucking the juice out of your lines which is what is giving your natural vacuum the ability to work

I agree. I think leave the lines alone (other than checking them for leaks or blockages) or hook them up to a vacuum pump and leave them hooked up.

[bees1st]

You know I was thinking the same thing as 325abn . I've seen times when the sap is barely running, and you turn the vacuum on and things really come in . Once it's started nature will take over .

[Austin351]

Without meaning to, I did this today.

I was experimenting with a recirculation line this evening. initially ran a small 3/16" line but the pump was starving every so often so I changed it to a 3/4" line and let it run for a coupe hours. When I went to shut the pump down about an hour ago, I noticed the sap retreated but about 2 minutes later it recovered and seemed to be flowing faster without the pump...??..