so guys just to update this thread.. here is the breather oil cap i bought. it seems to fit well. it is from the camero ss which seems to use the same cap at the 2.4 ecotech.
here is the exact oil cap i bought:
https://www.c-f-m.com/performancepa...o-SS-ZL1-LSA-LSx-LS1-5-7-LS3-6-2L-766p212.htm
Looks like a high quality part and if it has a check ball that's a good thing. I assume you've put this on a 2.4 and how many miles on the engine? The fact that it continually vents makes me think that the internal PCV system is well on it's way to being clogged and you may just have saved your rear main seal and engine. I believe the internal PCV systems are more to meet EPA requirements rather than for any performance requirements. Keep us updated on how it works out.
yes i have the 2.4. my vehicle is a 2014 and i have 65k miles. the temps havent been cold here and i change my oil every 5 k with mobil 1 5-30 synthetic and use mobil 1 oil filters. I m almost certain my pcv system is not clogged.
You will have to watch and see if you get any DTCs . . . fail code or check engine light.
It would help if you had an OBD II scanner and could monitor for any pending codes.
A ball check valve may not be enough back pressure to seal in the oil breather cap at idle. Have someone depress the gas pedal and hold 1,500 RPM or so and see if it still sputters. If it still sputters at 1,500 RPM you may indeed have blocked PCV valve.
Maybe ask other forum members to check their 2.4L by removing the oil filler cap and see if they can hear or feel air pulses at idle. It may be normal until more throttle is applied.
This is one reason I suggested a spring operated "pop off" pressure relief type valve mounted on a stock oil cap. They are adjustable and could be tweaked to provide a good seal under normal conditions.
I bought a couple of these for trial on daughter's 2.4L engine. Purchased from Amazon, but I modified it with a lower pressure spring I bought from Ace Hardware and cut down to size /
I have two blue tooth scanners. i use torque pro and i have bluedriver. i will connect them soon and see if i get any codes.
i had someone hit the peddle and the engine still sputters at the oil cap in the 1500-3000rpm range. really doesnt make a difference. what i think it happening is that the vacuum air/ crankcase air is deciding to leave through the check ball instead of circulating through the internal pcv system (which may actually be a good thing in the winter time for these cars).
can someone else with a 2.4 see if air contually sputters out the oil cap hole even at idle??
yeah i saw your link to amazon. 25ft lbs is prolly to high. might want to get it down to 1-3ftlbs off back pressure.
anyways in the next few days i am going to ride around with the oil breather cap and see what happens. i ll update here.
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