MISFIRE

  • Tiny
  • brad wheelwright
  • 2002 Saturn SL1
  • 4 CYL
  • FWD
  • automatic
  • 102,500 miles

On the saturn the wires and plugs are brand new my repair shop thinks the coils are good because it has alot of spark when checked with a spark tester could the coil pack still be bad

Sunday, January 23rd, 2011 AT 2:14 AM

5 Answers

  • Tiny
  • saturntech9
  • Expert
  • 28,864 posts

So does it only miss at idle and smooth out at higher rpm's?Also any code's?Any certain cylinder missing?The more detail's the better remember I can't see or touch anything.

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Sunday, January 23rd, 2011 AT 5:17 AM
  • Tiny
  • brad wheelwright
  • Member

The intake manafoild gasket is bad have a vaccum leak went back to back to basic troubleshooting checked for a vac leak and found it at cyl #1 thanks for your help

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Sunday, January 23rd, 2011 AT 9:54 PM
  • Tiny
  • saturntech9
  • Expert
  • 28,864 posts

I figured that that's why I asked the question's I did it's really common for 2000-2002 saturn S model single overhead cam intake gasket's to leak at the number 1 intake port. Let me know if you need instructions on how to replace the gasket.

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Sunday, January 23rd, 2011 AT 10:18 PM
  • Tiny
  • brad wheelwright
  • Member

Is there any brand of gasket that is better than the rest? Still think my plug wires a backwards looking at the coil pacs left to right is it 4 1 3 2 or is it 4 1 2 3? Repair shop changes 2 and 3 around seems to race alittle bit thanks for all ur help it really helps

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Tuesday, January 25th, 2011 AT 3:17 AM
  • Tiny
  • saturntech9
  • Expert
  • 28,864 posts

I posted a diagram of the wire's on the coil's and the cylinder's number's that should help you sort out if the wire's are correct. As far as the gasket goes I would go with the felpro one.I think when the engine's were built at the factory someone was wrinkling up the gasket's upon assembly because everyone I have seen that was leaking you could see it wrinkled up before taking it apart to replace the gasket.

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Tuesday, January 25th, 2011 AT 7:45 PM

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