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I have a misfire after tune up

Tiny
ADAM HARTWICK
  • MEMBER
  • 2005 SATURN RELAY
  • 6 CYL
  • 2WD
  • AUTOMATIC
I changed my spark pluges after it was done it was fine. Then I was sitting at a light and my engine light came on. So we had it scaned and found it has a misfire do not know which one is misfiring can you help.
Monday, September 19th, 2011 AT 1:39 AM

8 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,724 POSTS
What trouble code was found, P0300 or something other?
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Monday, September 19th, 2011 AT 1:41 AM
Tiny
ADAM HARTWICK
  • MEMBER
  • 11 POSTS
Not sure
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Monday, September 19th, 2011 AT 1:42 AM
Tiny
ADAM HARTWICK
  • MEMBER
  • 11 POSTS
Only one is misfiring I think
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Monday, September 19th, 2011 AT 1:52 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,724 POSTS
PO301, PO302. Indicate what cylinder is missing.
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Monday, September 19th, 2011 AT 2:02 AM
Tiny
ADAM HARTWICK
  • MEMBER
  • 11 POSTS
I think p0302
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Monday, September 19th, 2011 AT 2:11 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,724 POSTS
That would be cylinder 2. Remove the spark plug and check to see how it is burning (what it looks like) and let me know.
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Monday, September 19th, 2011 AT 3:22 AM
Tiny
ADAM HARTWICK
  • MEMBER
  • 11 POSTS
Would using NGK spark plugs cause it to misfire should I use ac delco
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Monday, September 19th, 2011 AT 12:17 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,724 POSTS
No, that shouldn't cause the issue. They are good plugs. However, anything is possible.
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Monday, September 19th, 2011 AT 5:13 PM

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