Technical Questions & Answers

Is it possible to remove the headlights without taking the bumper off

My son has bought a 1986 Nissan 300zx to restore, however it has a few electrical issues that require attention but of the couple I've tried so far they don't seem to be interested. Unfortunately neither of us know what we're doing and just wondering if anyone can help, we're located just outside Ramsbottom, Lancashire.

Need some help or ideas. EU- Spec, 1990 300ZX Twin Turbo Targa Manual 2+2 The ABS light appears when I start driving, but disappears after the car is shut down. Any possible reason for this? I’ve already checked a few things: all ABS sensors have been cleaned and inspected, and the wiring shows no signs of wear or damage. The ABS control unit showed five long red lights, which should indicate code 50, but as far as I know, it’s not an official code. The speedometer isn’t working, so that might be related to why the ABS light turns on after driving. We removed the Vehicle Speed Sensor (VSS) located near the transmission, and everything appeared fine—nothing out of place. T…

Hello all, I have a very strange issue with my car. I own a z32 NA with auto gearbox. The other day we found the battery dead for some reason. Never got to find out why and how. Anyway, after having charged the battery, we put it back in the car and faced this strange issue... when engaging any gear the car stalls. A friend told me to pump the gas paddle hard a couple of times and then try. It worked but the problem was back. Everything seems fine and no one seems to be able to figure out the problem. If you pump the gas paddle, it will engage but if you have to move the gears, say from drive to reverse or idle it in neutral and then engage again, the problem comes back. …

Afternoon all, Looking for some advice as I stand on the forecourt of a garage in Malta. I drove the car here, warmed down the turbos then turned off the ignition. On restart (10 minutes elapsed), I disabled the immobiliser as normal and cranked the engine as normal. No fire up. I am yet to pull a plug and check for a spark but fuel pump runs, I can smell fuel but not too strongly, all fuses are good. I interchanged EGI and ignition coil relays with no effect. Has anyone experienced anything similar? Rob +447703237954

Hi all, I'm looking to fit a new head unit in my 1992 Z32 as I'd like to add Bluetooth functionality for calls and music (UK radio is slowly killing me). I'm pretty sure but will double check I have the original bose speakers, which I've seen online don't always play nice when trying to fit a new head unit. I'd be looking for a single din one to fill the same slot, but don't really know where to go from there. Happy for any recommended units that can interact with the car and meet the needs I am after.

I am in the process of rebuilding my AC system on my 1990 twin turbo Z. Rebuilt compressor, new drier, new expansion valve, new pressure sensor, and changed all o rings. I vacuum tested the system and everything looked good. When filling the the system with R134, I discovered, that the sight glass was leaking. I was able to get the sight glass out, but it got damaged during the process. I can't tell what kind of seal was in place below the sight glass and have not been able to find any information on it. I have two questions: 1. Does anyone know where I can find a replacement sight glass or what other car has the same sight glass that I can get it off of? 2. What seal sho…

Hey guys, So yesterday, went to take out the Zed for a sunset drive, to be stopped in my tracks with it not starting. I realised through the horrible grinding type noise from the starter motor that there wasnt enough juice in the battery to crank. This morning, I've borrowed a mates jump pack. This is now where I'm confused. The car cranks with the jump pack, but no start? I thought maybe it wasnt getting fuel to pressed on the accelerator and I can smell fuel (not sure if this is relevant). No matter what, it wont start. I'm going to get a new battery anyway as this one is clearly knackered, maybe that will fix it - Does anyone have any idea's as to what's up though…

Hi guys, I'm sure its been asked before but could someone send a picture of their targa straps and bags secured in the boot. I've just had the straps arrive and one is far shorter than the other so struggling to work out how the pair of targas are secured down. Any pictures would be greatly appreciated.

Hi, can anyone tell me which cars have wheel bearings with 38mm dia inner, 42mm inner dia, and 46mm inner ? Bought 2nd hand hub with 38mm on But bearing from amayama are all 42mm Z centre state 46mm Totally confused cos I thought all were same size. Look forward to any help.

My front side and head lights aren't working. The tail lights are working and the audio head unit dims when the switch is turned. The fuses are fine. Any ideas?

Hi - Got a suspected rocker cover oil leak, most likely exhaust side. Wondering if anyone has a detailed guide/procedure on how to do this please? I'm only a DIY mechanic and learning as I go, would feel way more confident doing this with some form of reference on what to do, including exactly what parts I need to order in advance.

The warning light has come on and on other sites I've seen posts saying it can be caused by low hydraulic fluid. How high should it be? They also said to use ATF but how can I tell if if that's what is already in? The power steering is unaffected.

Happy Friday all! I've finally started work on my Zed! It has sat in my garage since 2013 with only a couple of engine warm ups. The last time I turned her over was July 2023 when I discovered that my braided fuel lines had started to perish and were pissing fuel all over the engine bay. Fuel lines have now been replaced along with a new battery, oil, coolant and fuel. Pleased to report she's now starting up and idling fairly well. However, I went to move her out of the garage for the first time today and was unable to engage reverse gear. Clutch pedal feels ok but there's more travel than I remember before it hits resistance. I've found that I can get the car in gear wit…

Hi all! Hoping someone can provide me with a 123 etc list of steps I need to take to drain, flush and refill the coolant. Its a simple task in principle and something I've done on other cars before, I guess im just wanting to ensure I do it right first time. Not only that, I've seen competing advice across forums on whats best to do. Any comments/advise is always welcome!

Hey! - You're going to get sick of me soon. Just took the car out for a spin this morning, upon switching the engine off there is a fair amount of white smoke coming from the engine bay, smells like oil too. Cant see any visible leaks up front, I put cardboard underneath, came back in 5 minutes and there is a small-ish but sizable enough for me to come running here puddle of oil on the cardboard. Around the back of the engine. Which i assume is then burning off on the engine causing the smoke. My question is ultimately, what could it be? How do I fix? Understand ill need to get it in the air to be sure, but atleast a starting point from you guys would be much much…

Hi everyone Just failed the MOT for a weeping nearside front shock. Can anyone point me to a source for OEM spec replacements ? I'm thinking it makes sense to replace as a pair too. Many thanks Mark

Hey guys, I have a ‘90 na manual swapped 300zx and have finished replacing the wiring harness with a z1 manual harness to only come to a predicament. When I go to start the car, the fuel pump isn’t turning on and the car isn’t receiving spark, but it is cranking. I’m thinking it could be due to one of the plugs near the fuse box.. If anyone has any idea as to what I should do next that’d be great 😞

Hi guys, hoping someone has had this and can shed some extra light. i’ve traced a misfire back to 2x neighbouring cylinders both getting no spark. known working plugs and coil packs have been switched and swapped to test and it seems to be the coil pack loom. anyone experience this? it’s a UK 93’ TT Manual thanks :)

Hi Guys, I'm new here and sorry for no introductory post yet but have an issue with my Z and I'm told you guys are a fountain of knowledge. Ive a 93 Jap import 300zx TT manual. My issue is I started her for the first time in about 2 months (only driven for events or good weather). I was just leaving it warm up while fitting a new steering wheel when I notice the fuel dropping very quickly. I turned it off and got out and notice petrol in front of the right exhaust, upon inspection then once off I noticed it was leaking from the mid section of the right exhaust. Does this sound like an injector is stuck open? As im assuming otherwise the fuel would of stopped once I turne…

While rummaging around the fusebox area I noticed these two connectors not attached to anything. Anyone know what they're for?

Is there a fuse for just the sidelight?

So I’m trying to diagnose a misfire as she gets warm it gets worse plugged nisscan in and this is my data How do I upload a photo What’s the correct readings I should be getting anyone notice something that’s not quite right 🫶

Does anyone know the way to de-pin the stock audio female connector? I've tied all of my de-pinning tools that fit but nothing works.

Does the A pillar interior trim panel just pop off or is there anything I should be careful about?