Hi, i have a 2014 vw jetta se 1.8t and the valve cover is crating a huge vacuum. so much that when i put the oil cap on it stalls
originally car would not start. battery is good checked power to starter and
power was good. changed starter and car turned on but sputtered at idle
and would turn off when i gave it gas. but found that if i took off oil cap car
would run smooth. so i figured the pcv valve was failing so i changed it out.
still same results. i did change out the spark plugs but still the same. put oil
cap on and car turns off