overhead oil line keeps loosing its prime

Guy_6

If the line keeps getting airbound, there is a STRONG possibility of a leak at a fitting. Oil may not come out, but air is considerably thinner than oil and will pull in to the line. A tiger loop may mask this, but I personally would rather have the leak fixed.

dave_83

overhead oil line keeps loosing its prime

is there an inline booster type pump to push from a 275 tank to a small suntec pump?

Kevin__Flynn

Oil line

Is it losing its prime or pulling a high vaccum becasue of air in the lines? If there are any slight air bubbles in the system they will eventually settle to the highest point in the system. Over time, all the little air bubbles come together and form 1 large air bubble that the oil pump can't over come. Symptom seems alot like the pump has lost its prime and is common in overhead oil lines.

Solution: with a vaccum gauge on the fuel pump, close the valve at the tank and allow the pump to pull a high vaccum (15-20 inches w.c.) and then open the valve at the tank. You should see the oil (and air) come blasting through the line. Repeat this 7 or 8 times until vaccum is close to zero. Keep in mind that if this is the problem this procedure will have to be performed everytime the oil system is opened ie. replace filter, run out of oil, etc...


Kevin Flynn

joel_19

Grrrrrrr

Get a Tiger Loop , problem solved.

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Unknown

Is there an old style drop lever valve on the tank? If so, remove it and install a new fire-o-matic wheel type.

Check your flares, pump cover gasket, and any pump fittings

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John@Reliable_10

Not really

"Get a Tiger Loop , problem solved"? How about problem masked!

John@Reliable_10

Dave, more to the story please

Is it a new install, new line or old line that just started to have this happen? What size line and how long?

eric_2

Check your flares

Had the same problem recently. Same situation of overhead oil lines, damned if it wasn't a bad flare. No oil out but air getting in. Just enough to drive you nuts.

joel_19

fine

yes you should check and repair leaks , but i'm still tiger fan I like the oil recircing back through it.

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