Q: My 1JZ doesn't fire, engine swap gone wrong?

asked by on

When I start the ignition in my freshly engine swapped 300ZX the engine starts to fire and then cuts out, it's been like this for three days, any ideas why?

My car has 1 miles.
My car has a manual transmission.

Hi there. Any number of possibilities, could be the cause for the replacement engine no start. What needs to be determined is whether there is a loss of fuel, a loss of spark, or both. Assuming, the replacement engine is mechanically sound, listening for the fuel pump and a fuel pressure test would help identify the fuel pump is functional, checking for spark while the engine is cranking, would help identify the ignition system is functional. Going back over the engine wiring harness connectors and grounds may resolve the no start condition. Accessing the ECM (engine control module)/computer for codes may help identify what’s going on. Replacing components without diagnoses, can be expensive and time consuming without resolution. I recommend having your vehicle’s replacement engine no start be diagnosed and repaired by a certified technician, such as one from YourMechanic.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. My 1JZ doesn't fire, engine swap gone wrong?

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: My clutch went from a slip in one gear to all 6 gears to sticking to the floor all in under 3 hours of non consecutive driving.

Hi there, thanks for writing in. It's entirely possible that a component failed. For instance, if the clutch pressure plate failed, then the clutch pedal will feel very spongy and can cause the car to slip and be very difficult...

Q: 1991 nissan 300zx 5-speed manual, can't get into reverse, no noise, started today out of nowhere.

There are only two possibilities: 1) the shift linkage has a fault; or 2) the synchronizer for reverse, or related parts, are broken. To identify the problem, the recommended service is a failure to shift diagnostic. Once that diagnostic is...


The V6-3.0L Turbo is diesel powered. If that is the vehicle that you have, the oil capacity is 6.8 quarts assuming you install a new filter and, of course, you should use a new filter. In all events, check the...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...