18Psi Oil Dip Stick Pops Out?

[2000 RS]

When running 18psi for long period of time my dip stick pops out and sprays oil, whats the cause of this and how do i prevent it in the future?

[89CAL]

Oh damn

Either your PCV is blocked/stuffed or your getting compression on the wrong side of your pistons......

[KiwiRS4T]

Time for a compression test (and possibly depending on the result) - leakdown test.

[Sunkist]

Overfilling oil could also be the issue if u have recently done a service

[Commsman]

I vote PCV is allowing boosted air back into your engine, pressure builds in crankcase & pops the dipstick.

An inline check valve like this http://www.ebay.com.au/itm/3-8-10mm-Inline-Check-Valve-Fuel-Diesel-Gas-Liquid-Air-One-Way-Non-Return-/221127175541?pt=Pneumatic_Hydraulic_Valves_Parts&hash=item337c34ed75 could be a lot cheaper than replacing the PCV & will do the same job.

If size is wrong for your hose check other items for sale.

[2000 RS]

Thanks guys, ill take alook at PCV see if its blocked tommorow.

Someone told me my bottem end might be getting tired, hope not. Guess time will tell, the car dont burn any oil and dont smoke so im hoping its only something minor fingers crossed..

[533 RYC]

Doesn't sound good, PCV is a definate possibility. However, How many k's has your engine done? How often has it copped 18psi for? And lastly, how often do you change your oil? If you answer high, lots & not as often as I should, then rings are the most likely culprit. I'd recommend keeping the boost down, as high positive crankcase pressures are going to push oil into your intake, & then it will burn oil!!!!!

[R32 4 Door]

Have you fitted a oil catch can recently? I fitted one wrong once and it caused this same issue your describing now.

I had this issue once becuase I fitted an oil catch can and it had no breather/wasn't vented back into the turbo intake. This pressurised the crankcase and popped the dipstick out. I fitted a breather then the problem was solved.

[SABBAi]

Backyard fix #241

Get a big spring and hold that sucker in.