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.

SPONSORED LINKS
Do you
have the same problem?
Yes
No
Monday, September 17th, 2012 AT 11:46 PM

3 Replies

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?

Was this
answer
helpful?
Yes
No
+1
Tuesday, September 18th, 2012 AT 1:05 AM
Tiny
KHLOW2008
  • EXPERT
  • 41,956 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.

SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Tuesday, September 18th, 2012 AT 8:57 AM
Tiny
KHLOW2008
  • EXPERT
  • 41,956 POSTS

Most probably this is where you went wrong.

Image (click to enlarge)
Thumb
Was this
answer
helpful?
Yes
No
Tuesday, September 18th, 2012 AT 9:00 AM

Please login or register to post a reply.

Related Engine Compression Content

Engine Cylinder Compression Test - All Cars
VIDEO
Engine Cylinder Compression Test - All Cars
Instructual repair video
Compression Test
GUIDE
Compression Test

A car's engine needs cylinder compression to run correctly. This compression is caused by the engine pistons traveling upward to the top of the cylinder bore and then...

VIEW MORE

Recommended Guides