Crank no start

Tiny
PULE
  • MEMBER
  • 2010 RENAULT LAGUNA
  • 1.6L
  • 4 CYL
  • TURBO
  • FWD
  • MANUAL
  • 145,673 MILES
Engine turns but does not start when switched on.
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Saturday, October 8th, 2016 AT 11:50 AM

4 Replies

Tiny
RENEE
  • ADMIN
Hi PULE,

While our expert moderators are going through the questions here is a link to an informative article from this site with step by step instructions and pictures and a video on what to check for when your vehicle cranks, but will not start. One of our experts will get back to you shortly.

https://www.2carpros.com/articles/car-cranks-but-wont-start

If you need any further help please come back to the site as we are always happy to help.

Thank you for visiting 2CarPros.

Kindest regards,

Renee
Admin
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Saturday, October 8th, 2016 AT 1:32 PM
Tiny
JIS001
  • EXPERT
Unfortunately we do no have that vehicle here in the United States, but all gas engines work on the same theory. First thing you will want to check is your fuel pressure. If no fuel pressure check your fuel pump fuse. If okay swap the fuel pump relay with one that is identical (preferably the horn relay if possible)

If you have fuel pressure normally something like 45-55 psi then check for spark. If pressure is too low or no pressure at all. Verify power and ground to fuel pump. If okay then you have a faulty fuel pump. If you have no spark check your injector pulse. The link Renee posted shows you how to do it with a paper clip and test light. You just want to be careful not to use a thick paper clip or you will spread open the terminals on the connector. Best bet would be to rent a noid light set from your local parts store. With noid light connected verify the light flashes. If it does check that one of the wires has power.

If you have no spark and injector pulse then you will have a faulty cam or crank sensor. If no power on one of the injector wire harness make sure to check all fuses. Also if you can, scan the computer for fault codes.
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Saturday, October 8th, 2016 AT 2:42 PM
Tiny
JIS001
  • EXPERT
Sorry on the noid light test meant to say if it does not flash, then verify one of the wires has battery voltage.
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Saturday, October 8th, 2016 AT 2:44 PM
Tiny
RENEE
  • ADMIN
Thank you JIS001!
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Saturday, October 8th, 2016 AT 2:54 PM

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