Need Help
#1
Need Help
My son has a 2006;Infiniti G35 coupe. A few Months ago the Motor developed a Knock ( Wrist pin ) so we decided to replace the motor. We found one from a running G35 ( Who was swapping out to a Rev up and Manual ) we got the Motor in, turns over, but won't start, using the same Fuel rails, injectors, Throttle body from original Motor. New Crank and Cam Sensors. But won't start and shows no codes. Any Idea's of where to start looking ? We have fuel pressure to the rail, and Spark ( It started for a few seconds ,with the Crank sensor disconnected and starter fluid )
Last edited by Faoutfreak; 11-02-2023 at 06:45 PM. Reason: Add
#3
we never opened the TIming, but did replace Camshaft sensors. Does the Engine need to be at TDS when replacing them ( One on each side of the V6 ) as well as the one Crankshaft sensor?
#4
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Urbanengineer (11-05-2023)
#5
Still no start
#7
Still no start
Ok went and checked the NAT sensor light, no solid red light when Cranking, found 1 cam sensor plug with a Crack, but Mechanic says it should not effect the spark ( Question if the Cam sensor on one side bad will it effect the Spark on all Cyl or just on one bank ) . Also relayed to the Mechanic about the Pin possitioner for the Flywheel. We were told that the hole is drilled deeper than the pin itself, so the flywheel , if put in wrong can push the pin in, and throw the timing off, but that should have nothing to do with the Spark issue. It seems weird that what should have been a pull and Plug issue has turned into such a PITA, anyone have any suggestions ? We even went and talked to Nissian, of course they want the car towed there, $300.00 to diagnose ( Same as already done ) $500.00 for a new Key and fob ( More than the Mechanic is charging for rear main seal and helping diagnose ) at our wits end
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#8
Join Date: May 2017
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If the engine isn't reading the cam sensor it won't fire spark, it won't turn on the fuel pump (except for the 1 second when you first turn the key to ON).
If you had the flywheel removed from the engine, and you're not 100% sure you had that dowel pin in the correct position, then I would pull the transmission (much easier than the engine, usually takes me about 45 minutes) and verify.
If the flywheel was already on the engine then it was PROBABLY in the correct position.
You're using the existing cam and crank sensors yes? Or are you using the ones from the newer donor engine?
If you had the flywheel removed from the engine, and you're not 100% sure you had that dowel pin in the correct position, then I would pull the transmission (much easier than the engine, usually takes me about 45 minutes) and verify.
If the flywheel was already on the engine then it was PROBABLY in the correct position.
You're using the existing cam and crank sensors yes? Or are you using the ones from the newer donor engine?
#9
Join Date: May 2017
Location: Washington State
Posts: 14,799
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#10
#11
If the engine isn't reading the cam sensor it won't fire spark, it won't turn on the fuel pump (except for the 1 second when you first turn the key to ON).
If you had the flywheel removed from the engine, and you're not 100% sure you had that dowel pin in the correct position, then I would pull the transmission (much easier than the engine, usually takes me about 45 minutes) and verify.
If the flywheel was already on the engine then it was PROBABLY in the correct position.
You're using the existing cam and crank sensors yes? Or are you using the ones from the newer donor engine?
If you had the flywheel removed from the engine, and you're not 100% sure you had that dowel pin in the correct position, then I would pull the transmission (much easier than the engine, usually takes me about 45 minutes) and verify.
If the flywheel was already on the engine then it was PROBABLY in the correct position.
You're using the existing cam and crank sensors yes? Or are you using the ones from the newer donor engine?
#13
No Nothing, found out the company that did the modification program can test the ECU outside the car ( Benchtest ) Will take it back to factory , delete NATS, try starting in another G, if it starts will reset the Mods. If the ECU is bad , he has them in stock and will program for half the original cost ( Including the New ECU ) . Hopefully this will fix the issue !
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