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VQ30 start up

902 views 1 reply 2 participants last post by  rogoman 
#1 ·
can someone help me. I have replaced a VQ25 with a VQ30 on my Nissan Cedric but the engine cant pickup. It just cranks but cannot pick up. We tried to change the pickup sensor but still the same. Also we discovered that power cant reach the spark plugs. What could be the problem and solution?
 
#2 ·
The first thing to do is perform an ECU code readout with a portable scan tool to see if any fault code is set. Here are some possibilities of a non-start situation:

- Make sure all the fuses are OK.
- A P0335 fault code indicates a problem with the crankshaft position sensor.
- A P0340 fault code indicates a problem with the camshaft position sensor (bank 1).
- A P0345 fault code indicates a problem with the camshaft position sensor (bank 2).
- Check all the engine grounds.
- Check for fuel delivery.
 
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