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300ZX

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Question
My 1JZ doesn't fire, engine swap gone wrong?
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...
Question
I spun on some ice. Now my car doesn't seem to have any oil pressure.
You didn't say weather you had a "rough landing." If in the process of spinning you ran over some debris or maybe a curb, you could have damaged your oil pan and lost your oil. If you haven't already looked...
Question
Battery sparking
Hi There, This may sound a bit like stating the obvious, but this happens all too frequently even with some very technically able mechanics; check to be sure the positive cable is connected to the positive terminal and negative to...
Question
Would radiator flush clean out the heatercor
The heater core may get a little cleaned if you use a flush and hold the rpms at about 1000 for 5 minutes with the heat on. If the heater core is completely clogged then you may not get any...
Question
My car idles poorly and loses power when I accelerate
Hi There, It sounds like you may have a dirty or failing idle air control valve causing your engine idle to fluctuate and eventually stall. The idle air control valve is a small valve on the engine's intake system that...
Question
Half of my sparks aren't working.
Hi there. If the engine is running rough and it is not firing on the three cylinders, then either the spark plug wire has too much resistance or the spark plug is fouled out. Put a spark plug tester on...
Question
Ran car with no oil, car stopped on hwy what to do now?
Hello There, Unfortunately, it sounds like your car may have had some catastrophic damage due to running it without any oil. Depending on how long and how low the oil levels were when you drove it prior to it shutting...
Question
car running very rough, making oil 1990 Nissan/Datsun 300ZX
Hello - I suspect your cold start system has gone "full on" or you have leaking injectors. Without question your fuel system is pumping way too much fuel into the intake, leaking past the piston rings, and entering the crankcase....
Question
I have negative camber on my front driver's side wheel
Replacing the upper control arm on your vehicle may permit camber adjustment. But first, look for cam-style bolts or another adjusting mechanism. Of course, check to see if the factory preferred camber setting (probably slightly negative, maybe 0.5 to 1.0...
Question
My car looses power everytime I start my ac or defroster on. It starts making some squealing noise from under the hood.
Hello, thank you for writing in. Your issue is stemming from the air conditioning condenser that is used when you engage the A/C or the defrost. The squealing noise that you are hearing is likely coming from the pulley that...
Question
My car won't start and has a new starter
Hi There, It sounds like you may have a weak battery or potentially a faulty starter relay or ignition switch. The starter relay directs power from the battery to the starter solenoid which then engages the starter when you turn...
Question
Clutch won't work and the clutch pedal has no pressure.
Hi there. Check the slave cylinder and see if its moving. There could be a leak on the slave cylinder causing the slave cylinder not to operate. Also, check the pin to the clutch pedal and make sure that it...
Question
Why does my Nissan 300zx lose power?
Hello, we will be happy to help. I'm curious to know why the guy told you that you needed a new oxygen sensor and fuel pump. I wonder if the oxygen sensors were exhibiting that of lean conditions. If the...
Question
Transmission Grind
This may suggest failing transmission synchros. As you may know, when a clutch drags, it is not letting go of the disk fully which overloads the synchros and burns up the friction surfaces quickly. Synchros work by speeding up or...
Question
Idles fine and works fine when first starts cold then sputters and feels like horrible misfire when hot and idles low
Hi There, What you are describing sounds like an ignition coil pack that may be failing. Ignition coils are prone to this type of erratic functioning or heat cycling when they are beginning to fail due to the temperature fluctuations...
Question
electrical or something i dont know.
Hi there. To be completely honest, we're not quite clear as to what issues you are experiencing based on your input. One thing we were able to pick up on was the acceleration problems you described. This is typically caused...
Question
My car starts fine but always like once a month it doesn't start it cranks ok but it will not start if I let it sit for 6 hours
Hi There, What you are describing sounds like an ignition coil that may be failing. Ignition coils are prone to this type of erratic functioning or heat cycling when they are beginning to fail due to the temperature fluctuations under...
Question
I have rotated my engine by hand for several minutes and still can't find TDC. My car running fine I only changed my water pump.
You should replace the timing belt if it got wet with coolant or it will fail prematurely. The timing marks shown here will align only every two revolutions of the crankshaft.
Question
My 1985 300zx is taking 2 to 3 hours to crank after u take the battery out and put another battery in.
This may be a sign of a faulty ignition coil. Ignition coils are coated with a varnish-like insulation that becomes brittle over time after being stretched then contracted repeatedly. The insulation develops small fractures that open when heated and close...
Question
Lack of power 1991 Nissan 300ZX
Hello and thanks for writing in. There are a number of things that can cause the motor to over fuel or run rich. When this happens, it is usually related to things like faulty fuel injectors, a failing mass air...

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