1999 Honda Accord oil over blow

Tiny
TRUMPET MAN
  • MEMBER
  • 1999 HONDA ACCORD
Noises problem
1999 Honda Accord 4 cyl 122, 00 miles

On my car when driving it's make a huming sound but when I stop or idle it runs smooth. Air pressure comes up where you put the oil in when runing.
Friday, April 24th, 2009 AT 4:56 PM

1 Reply

Tiny
F4I_GUY
  • MECHANIC
  • 3,302 POSTS
Crankcase pressure is absolutely normal at the oil cap. However, if it feels very strong then you might have a problem.

Check your PCV system, the valve itself, the hose and vacuum source.

If that is fine, then you may have blowby because combustion gases may be surpassing the pistons or valves.
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Friday, April 24th, 2009 AT 5:22 PM

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