Vermeer stump grinder hydraulic oil foams. Actually blows off fill cap and spills hydraulic fluid out. Strainer filter is clean. Feed line from reservior to pump seems tight. Any suggestions

SOURCE: air in the power steering filter

The power steering fluid will aerate (churn and make bubbles) if the power steering fluid is overfull or underfilled.

If the steering is making a binding sensation, causing excess motor drag, then it's probably low.

Just go to auto parts store and buy their recommended fluid. It's about $3/quart usually. Some auto makers require very specific fluid for their cars, but for a Nissan, it should be somewhat standard.

There should be a dipstick that is marked with the proper fluid level on your power steering pump. It'll be marked HOT and COLD, which of course corresponds with when you're checking the fluid. If you haven't driven the car and it's morning time, check the level with COLD. If the car has been driven and is warmed up, then check it against HOT.

SOURCE: Leaking Hydraulic Fluid

Power steering fluid is the only thing the car has resembling hydralic fluid. If you follow the rubber hose all the way around from the pump to the gear box, possibly with the car running and the wheel being turned back and forth by someone while you look, you should find your leak. This is assuming it is powersteering fluid. Check your pump. Is it low? Rubber hose probably turns to steel line somewhere along the path from pump to gearbox, hope that helps ya a touch.

SOURCE: i have a 1986 nissan 300zx non turbo. oil prssure

Dear number601513: DANGER!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Adding oil is not going to make the oil pressure build up by adding more. The system is slightly more than a 4 qt system with an oil filter change. By adding oil, you raise the levels in the engine to areas where it is not designed to collect. Consequently, it is prone to leaking and can smoke by picking up oil through the pcv.
The fuel pump has NO relationship to it's oil pressure. The only relationship would be through providing enough fuel to power the engine speed above 600 RPM which would and should be more than adequate speed to drive the oil pump. The oil pump on the VG-30 is located at the front of the engine and is the last component which is installed prior to to installing the timing belt gear. The pump is crank shaft driven, so it is a positive drive unit and not very prone to failure. The oil pickup tube which is bolted to the bottom of the pump, is sealed by an "O" ring. This is a probable place for it to loose prime. The screen at the bottom of the pick up tube could be full of sludge which limits the flow of oil, thus keeping the oil pressure dangerously low. One suggestion prior to condemning the engine oil pressure, is to do a mechanical oil pressure test. You can remove the oil pressure sending unit and screw a mechanical oil pressure guage in it's place. The threads are not metric, but NPT tapered design. You can buy mechanical oil pressure gauge kits relitavely cheap and make a test tool with one. Due to the fact that the oil pressure gauge is electric, they can give misleading readings. If your readings are down in the 8-10 PSI area @ idle this is bare minimum, when you raise the engine speed, the oil pressure should reach 40-60 PSI. Make sure you bleed the air out ot the oil line going to the gauge beause "AIR" compresses and will give you a false reading.
I hope this is informative. Good luck.
PS, I'm the new guy on the block here in "Fixya" if I've helped you out, please write back in to let them know. THANKS>>>>>>>>>9

SOURCE: '07 Tahoe; check engine light on steady. Just came

Have a dealer or garage check your Oxygen (O2) sensor. As a quick fix, try disconnecting and reconnecting your car battery. Sometimes this will reset the check engine light.Good Luck!

SOURCE: 95 ford tauras 3.8 v6, looking for oil leak.seems

clean engine with degreaser then run it to locate the exact location for leak