Customer Complaints: My JDM Motor is not Working

[HandGunPat]

Hey guys, this is very common on VQs after a swap. I've done this before.. and a bunch of friends. The reluctor wheel for the crank sensor is on the flywheel. The flywheel has a hole on it that needs to be lined up with a pin on the back for the crank, if it is not lined up it will have a bad misfire (if its only off one bolt) or it will not fire at all if its completely off. Just rip the trans out and check it, esp if the customer did it him self.

[RPMReapers]

I like the way you guys come together and think of solutions. Each person is looking and giving insight on how to get the job done. No one is sitting around being a dick . Great work guys, earned a subscriber

[iSpartan]

As someone who’s had to fix so many things on my stock 03 G35 it’s good to see the pro’s get stumped on this stupid thing too. Loved the video and share the same pains 😂

[techdiesel]

I love your guys videos. It's awesome seeing the day to day work as mechanics with all the weird customer complaints, the funny moments and the frustrating parts of the business. Awesome content 👌 10/10

[dusty]

There’s usually a difference in the Cam/Crank reluctors between USDM and JDM, would definitely cause a crank no start!

[cwaya]

This car is notorious for the cam sensors, If they are bad it wont start sometimes clearing the code will fix but not always.
Ik these guys know what their doing but for anyone else that's getting spark and fuel this could be your problem. Hope this helps someone.
Hope everyone had a Happy and Blessed day!

[BudgetBuilds]

Also, a common issue on these engines is the cam positioning sensor will go bad randomly without warning. There are two on each side on the back side of the motor. The engine will crank and not start when just one goes.

[haroldthompson]

My friend did a jdm swap on his 04 g35 n it was the flywheel having an extra tooth making it lose the position of the crank and losing spark

[ethanshuman]

Its the NATS that has failed on the vehcile. It's an extremely common issue with the G35s. I had it happen with my old 2006 G35 Coupe. I had to send off the ecu to get reflashed and the deleted the NATS system from the ECU. Solved it right away.

[garrettlewis]

There’s a fuse in the panel near the battery it’s a 10 amp and it commonly blows on those and doesn’t give the ecm power swap it and you’ll be good

[EduardoDiaz-vd]

Thanks for the tips, plan to do a JDM k24 stock swap for longevity... Will reuse most USDm parts and wiring for my new motor

[boydwoodgyer]

Hey ya Will & the team .
I’m a motorcycle mechanic in New Zealand 🇳🇿 & I was taught an anagram concerning the requirements for an internal combustion engine .
It’s the F A C T S .
F - Fuel ⛽️ .
A - Air .
C - Combustion .
T - Timing ⏱️ .
S - Spark ⚡️ .

Keep up the great content .
Cheers 🍻, Woody NZ 🇳🇿 .

[STommy]

Love the videos! I appreciate what you guys do

[ferdzx]

Guys I had same issue. Stock engine crank with no spark, Tech had to replace my ECU. And it works. And still have my G

[Jaytheghost]

I had a bought a 03 350z had a bad gasket so I ended up just a doing a jdm motor swap on it and I’m literally in the same position rn trying to figure out why it wasn’t turning I had changed the ecu, got a new wire harness, tested the starter, thought it was a grounding issue so I put a lot of ground wires and after everything nothing worked until I noticed the engine wasn’t spinning and it was locked up that’s why you always get warranty guys

[kalebjanson]

Did one of these a while ago, was an HR motor though. The fans coming on immediately is a Nissan failsafe, it means there's a problem with the ECM reading output from the motors sensors which typically means the pins are switched in the engine harness plug.

Another issues was the pinouts for the cam sensors. The cam sensors on JDM motor are pinned opposite of the US motor and read backwards when looking at the waveform for the cam pickups. The crank sensors read differently as well and required me to use the US crank sensor but swap the pin positions for it in the JDM plug so the it would read correctly.

Swapping the harness was a good thought. But you still have the sensors themselves outputting the signals wrong. I love wiring & electrical so this would be my playground. This on top of the Nissan IPDM and CANBUS systems are a RATS NEST of circuits lol. Makes it fun for people like me to go make it work.

[hellcatrenegade]

I would love to work with these guys! Funny, genuine and they knkw their stuff

[xgaming]

Easy tip for Nissans if cooling fans come on the second you turn the ignition on it’s in fail safe bc the ECM isn’t communicating which means bad ECM or bad connection somewhere in the harness

[TacticalTunic]

I’ve done about 6 vq swaps and I never ran into this issue … they missed something probably the flywheel is off timing

[dannyipwn]

Easiest fix and common issue with these is the crank/cam sensor. replace both and see if it fires.