SPONSORED LINKS

2003 Chevy S-10 Number 3 cylinder is misfiring

Tiny
NJOHN941
  • MEMBER
  • 2003 CHEVROLET S-10
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 62,000 MILES
I have had a slow collant leak (unable to see or find the leak) but if I left the radiator cap on half turn the radiator only needed attention every six months or so. I only say this cause I was told it was the intake seal leaking and cause the misfire. (Had the plugs changed and was discolored). But from some research I have found that injectors are a common failure as well. My question is which one is more likly the trouble. Thanks, If more info is need to please let me know.
SPONSORED LINKS
Friday, January 16th, 2009 AT 2:17 PM

3 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Check the compression and injector for that cylinder

Cylinder misfiring can be caused by worn or fouled spark plugs, a weak spark (weak coil, bad spark plug wire), loss of compression, vacuum leaks, anything that causes an unusually lean fuel mixture (lean misfire), an EGR valve that is stuck open, dirty fuel injectors, low fuel pressure, or even bad fuel.
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Friday, January 16th, 2009 AT 2:27 PM
Tiny
NJOHN941
  • MEMBER
  • 2 POSTS
Thanks for your suggustions, should mention that I did have the wires replaced at the same time as the plugs. Two months ago I had to replace the fuel pump as well. I will get a compression test done. EGR wont that make the whole engine act funny?
Was this
answer
helpful?
Yes
No
Friday, January 16th, 2009 AT 2:40 PM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
EGR wont that make the whole engine act funny? If it acts up it has to be mutiple cylinders involved not just one-its just one of them possiblities
Was this
answer
helpful?
Yes
No
Friday, January 16th, 2009 AT 3:01 PM

Please login or register to post a reply.

Related Engine Misfire Content

Intermittent Misfire
VIDEO
Intermittent Misfire
Instructional repair video
Misfire Random Code P0300
GUIDE
Misfire Random Code P0300
The world of automotive diagnostics can be complex, with numerous codes and potential issues to keep track of. One of the more common engine diagnostic codes is P0300, which...
VIEW MORE

Sponsored links