Will a loose oil cap cause rough idle?
If you remove the oil cap, you allow FREE UNMETERED AIR in, which is then sucked into the throttle body, messing up you air/fuel ratio, then causes the computer to adjust timing and fuel output to compensate. Yes, any time you step on the brakes, the engine idle goes up just a little for a similar reason.
Can a bad oil filler cap cause low oil pressure?
Wont cause low oil pressure but if its going down to low then chances are either the gauge needs to be replaced.
What to do if your oil filler is blowing smoke?
Slowly and patiently loosen the engine oil filler cap till you are able to completely remove it Now, pay attention to the amount of smoke/fume that is blowing out as you remove the oil cap. At this point, if the amount of fume you can see coming out is less, then it’s probably fine like we mentioned earlier.
Is there air coming out of the oil fill cap?
So out of curiosity I checked my car and discovered a light flow of air coming from the oil fill cap. My friends car does it much worse and he is also concerned about it. So my question is, do I need to be making plans to buy a new car or is the current motor fine?
Is it OK to open the oil filler cap?
Do not open the oil filler cap when your car’s engine is hot. This is not advisable at all for safety reasons. On starting your car in step 1 above, don’t wait too much till the engine gets hot before you proceed to step 2. Just about 1-3 minutes is okay to wait.
Why is there smoke coming out of my oil filler cap?
Well, the answer is dependent on the amount of smoke you are seeing come out. If the smoke is small, everything is probably fine, but if the smoke is kind of too much, then you should be concerned. To avoid unnecessary mechanic visits, Automilas .com brings here the best information as regards this problem and possible ways you can fix it.