Hi Everyone!

I have an issue with my 2008 Nissan Quest. It will not start. It cranks. There is no spark.

I tested two coils with a spark tester. The battery is ok. I had another spare battery.

I removed the spark plug and can see the fuel going in. Checked for codes and didn't find any.

My friend suggested it was a crank sensor. I replaced it under the engine and it didn't help.
I purchased the OEM sensor from Nissan.

Any idea what else I should look at?

Thank you!

Crank sensor would throw a code, I guess.
If you get no spark, start tracing electric diagrams from the FSM.
Check ground points and trace power and ground everywhere where you expect it to be for the spark to reach the plugs.