The car ran fine but the timing chain was making.

Tiny
ANONYMOUS
  • 2002 SATURN L200
  • 140,000 MILES

The car ran fine but the timing chain was making a knocking sound from too much slack. So I replaced the timing chain. Now it runs rough and shows P0301 misfire cyl 1. I checked compression and it has zero compression on cyl 1. I didn't find any coolant in oil. Any help would be a big help.

Monday, April 8th, 2013 AT 1:50 AM

5 Replies

Tiny
SATURNTECH9
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How did it run before you replaced the timing chain?Was everything timed correctly when replacing the timing chain?

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Monday, April 8th, 2013 AT 4:01 AM
Tiny
CHRISBAD89M
  • MEMBER

It ran fine before. I even tore it all back down and redid the timing to make sure it was right.

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Monday, April 8th, 2013 AT 11:32 AM
Tiny
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Sounds like a valve issue if its timed correctly doesn't make sense that it ran fine before unless it bent some valves before the chain replacement. I have never had that happen to me from just replacing chain on those cars.

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Monday, April 8th, 2013 AT 2:01 PM
Tiny
CHRISBAD89M
  • MEMBER

I took the valve cover off and cranked the motor over. All the valves seemed to be moving normally.

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Monday, April 8th, 2013 AT 10:02 PM
Tiny
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You can use a cylinder leak down tester to see where the compression is going.

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Tuesday, April 9th, 2013 AT 3:03 AM

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