SPARK NOT ON COMPRESSION STROKE

  • Tiny
  • rsdin559
  • 2003 Toyota Rav4
  • 215,000 miles

I rebuilt the engine. I'm trying to start it, but the spark is not on the compression stroke. It's 180 degrees off. I was very careful to make sure the chain and all marks lined up. Could this be a problem with the cam position sensor, or is it something else. Thanks in advance.

Monday, September 17th, 2012 AT 11:46 PM

3 Answers

  • Tiny
  • cadieman
  • Member

Put it on compression stroke on #1 cyl. Then turn the crank until the piston gets to tdc. Check the timing marks if they line up or not?

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Tuesday, September 18th, 2012 AT 1:05 AM
  • Tiny
  • KHLow2008
  • Expert
  • 41,976 posts

If the ignition timing is 180 off, the timing chain installation should be correct. Either the crank position or camshaft position sensor plate is installed reversedly.

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Tuesday, September 18th, 2012 AT 8:57 AM
  • Tiny
  • KHLow2008
  • Expert
  • 41,976 posts

Most probably this is where you went wrong.

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Tuesday, September 18th, 2012 AT 9:00 AM

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