Misfire at idle... (56K beware) [Archive] - GrandAmGT.com Forum

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grandam3400
07-23-2008, 12:43 PM
I have been getting a misfire in cyl #5, but only at idle. I have no idea why, so I thought if I posted a pic of the spark plug from #5 then someone could help narrow it down for me. Here are the best pics I could get with my phone. The plug on the right is from #5 and the one on the left is from #2. Is it a bad plug? or Injector? or what?

Sorry for the large pictures...

http://i292.photobucket.com/albums/mm2/grandam3400/IMAGE_155.jpg

http://i292.photobucket.com/albums/mm2/grandam3400/IMAGE_156.jpg

gectek
07-23-2008, 01:20 PM
looks like the electrode is gone... put another plug in and see what happens, or put that plug in another cyl and see what happens...if nothing happens switch the wire...if nothing still then switch the coil, dont use the 2-5 because it is the same coil...use the 1-4 or 3-6 and see if it changes spots

grandam3400
07-23-2008, 03:04 PM
Its a really bad pic. The plugs are very new. The elctrodes on both plugs are the same length and have the exact same gap.

gectek
07-23-2008, 03:06 PM
well the one on the right is really fouled...do the old switcheroo and go from there

nickofcourse
07-23-2008, 07:05 PM
in the future, put the plugs over a white piece of paper to snap a pic