dynoed and the dipstick popped out?

[llteddy4playll]

I went to dyno my car and the dipstick popped out under full throttle. Is that normal or what? Thanx

[Bryants95240sx]

too much oil.

[llteddy4playll]

Is that the only thing that would cause it? I actually checked before i dynoed it and it was perfectly at the high mark.

[krustindumm]

high crank case pressures. Time to check the health of your PCV system and piston rings.

[white smoke]

^^ is right, its not too much oil.
Do you have a breather on your valve cover or catch can?

[llteddy4playll]

i actually dont have either

[Brian]

You can make something fun.

get a spring.
attach one end to the dipstick "ring" and the other end to something else. this will hold the stick in even if something tries to push it out.

[Nizzan4u2nv]

Is your car boosted? Are you running the stock pcv system or a catch can? If you have a catch can hooked up improperly youll pressurize the crankcase. Do a compression test to see how your rings are.

[llteddy4playll]

actually im using a stock pcv and i have a stock sr20det. Ill get a compression test asap. But i only made 233hp and 266tq. Wouldnt hold boost past 12psi

[krustindumm]

^^ is right, its not too much oil.
Do you have a breather on your valve cover or catch can?

of course I am ;) it's my job to be right (Nissan Technician).

Run compression and leakdown tests, make sure they are on the high end of acceptable per the FSM. If they are, I have a quick test for you.

With the engine idleing remove the oil cap and lay on a sheet of paper, about 3" square should work. It should be sucked to the hole, and vibrate a bit. If it is blown off you have a plug in your PCV system or a bad valve (stuck closed, so basically plugged).

[smithers584]

same thing happened to me on my first pull. changed pcv valve and everything works fine now. i think its a 19 mm or something like that you can get from autozone and takes a second to change.