Question about 1985 Nissan 300ZX

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Engine timing problems

Just changed the water pump on my 1985 nissan 300 zx turbo, and now the engine will not start. It turns over but won't start. Could I have a timing problem?

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  • Anonymous Mar 12, 2014

    how to test fuel tem sensor 1985 nisson 300 zx

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Doubtful, since you shouldn't have to remove the timing belt to change the pump. You have the VG30E engine, from which the VG30DETT in my 1990 300ZX was derived, and that one also didn't need the timing belt removed to change the water pump. However, you may have had to remove the cam angle sensor (on my engine, it's a round sensor on the driver's side exhaust cam). That sensor rotates twice for every turn of the crank, so if it got spun accidentally, it could be 360 degrees out of phase. It's keyed to only fit in one position on the end of the cam, but it could've been rotated one full revolution accidentally. If your engine has one, remove it carefully and slowly, then reach into the back of it, turn the pin one full turn, and reinstall it. Try that out and see if the car then starts and runs.

Posted on Sep 02, 2008

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