SPARK NOT ON COMPRESSION STROKE

2003 Toyota Rav4

Tiny

rsdin559

September, 17, 2012 AT 11:46 PM

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.

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3 Answers

Tiny

cadieman

September, 18, 2012 AT 1:05 AM

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?

Tiny

KHLow2008

September, 18, 2012 AT 8:57 AM

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.

Tiny

KHLow2008

September, 18, 2012 AT 9:00 AM

Most probably this is where you went wrong.

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