SPONSORED LINKS

Knocking at idle

Tiny
PUFFNSTUFF
  • MEMBER
  • 2002 FORD FOCUS
2002 focus has a knocking at idle that seems to get louder while driving. Check engine came on for one day and had a code of po304, cylinder 4 misfire, but went back off the following day. For awhile the knock was intermittant, but now it is constant. Anyone have any idea what would cause this?

Thanks!
SPONSORED LINKS
Wednesday, August 31st, 2011 AT 1:07 AM

2 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,885 POSTS
The cylinder miss could be many things, plug, coil, injector, low compression. If the knock is in the engine, it could be a rod bearing, main bearing, wrist pin. Make sure the oil is clean and full and I recommend that you allow a mechanic to listen to it to identify where the noise is coming from.

If you have other questions, let me know.

Joe
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Wednesday, August 31st, 2011 AT 1:42 AM
Tiny
PUFFNSTUFF
  • MEMBER
  • 59 POSTS
Car runs fine and there is no loss of power. Is it possible that it could be a pulley or belt tensioner?

Thanks!
Was this
answer
helpful?
Yes
No
Wednesday, August 31st, 2011 AT 1:25 PM

Please login or register to post a reply.

Related Noise Knock Content

VIEW MORE

Sponsored links