Replaced water pump

Tiny
POSTMAN69
  • MEMBER
  • 1992 LEXUS SC 400
  • 1,350 MILES
Replaced water pump. Car started but missed so hired mechanic to retime it now I have 12 volts to back side of distibotor but none to plug wires. Replaced rotors but no help. Took crank sensor to mechanic and he said testing ohms showed shoule be ok. Crank and cam sensors at least $80 apiece so can't just replace if not the problem. Thank you for your help.
Monday, November 5th, 2012 AT 12:07 AM

5 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,796 POSTS
I would start with basics.

Compression test as it is an interference motor.

Fuel pressure and spark.

Do not throw parts at it till you know the failure

Roy
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Monday, November 5th, 2012 AT 12:16 AM
Tiny
POSTMAN69
  • MEMBER
  • 3 POSTS
Compression was btween 180 to240 cranking for 10 to 15 seconds. Problem is I have no spark but do have voltage at the back side of distributor
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Monday, November 5th, 2012 AT 2:15 AM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,796 POSTS
Then you may have a failed distributor assembly

Roy
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Monday, November 5th, 2012 AT 3:09 AM
Tiny
POSTMAN69
  • MEMBER
  • 3 POSTS
Is it possible for both sides, to fail at the, same time since I have no spark on either
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Monday, November 5th, 2012 AT 12:21 PM
Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
Check the crank sensor wiring an ensure the reluctor at crank sprocket is installed correctly.
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Monday, November 5th, 2012 AT 8:57 PM

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