Question about 1994 Nissan 300ZX

1 Answer

Missing 2 cylinders, no heat, oil leak. 300zx HELP ME PLEASE

I have a 1990 300zx n/a. It is only running on 4 cylinders. I am about to change the injectors, but could this be the reason. Maybe distributor, coils? Also it develops a tick now (when it never did until recently) SO i'm not driving it. Also it sat this winter and when I started it this last week it started smoking and there seems to be an oil leak near the back of the motor. I don't know if it's down low by the rear main, or if there is some where else it could leak from? Then last but for sure not least I am not getting any heat, and the vents don't change when I try to switch from defrost. Please help me I;m WAY TOO POOR to bring it to the dealer.

Posted by on

  • syndel04 May 23, 2009

    The smoke is coming from the motor and it's leaking out the valve cover gaskets. I got all cylinders to fire, and honestly don't know how. Did a compression test one day and they were all working and up to good compression. So I don't know where to go next. There is oil in it I just changed it and it was a lifter. I just need help with the heat now.

×

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that gotĀ 5 achievements.

    Governor:

    An expert whose answer gotĀ voted for 20 times.

    Hot-Shot:

    An expert who has answered 20 questions.

  • Expert
  • 78 Answers

If you have no heat at all and its smoking white out the tail pipes then you have a blown headgasket. That is why you aren't running on 2 cylinders.

Check you coolant level to see if you have a blown head gasket. The tick is from not having enough oil in the engine. Oil always leaks from these but not too often its the rear main, just depends.

Does it smoke white out the tail pipes?

Posted on May 23, 2009

  • Seth Plasneica
    Seth Plasneica May 24, 2009

    Just because you have compression dosen't mean your gettin spark and fuel to ignite the fuel and air.

    When the car is running on its own does it run on all 6?


×

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Transmission 300zx


any noise from gearbox when you engaging clutch when engine is running? Check for oil as well. Firstly I suggest to drain oil out and check for particles in the oil, synchros could be damaged

Apr 14, 2014 | 1990 Nissan 300ZX

1 Answer

Replace fuel pump om 1990 nissa 300zx


Sort of.
There should be a relay that provides power to the pump when you first turn the key on.
Then once the engine starts power is provided by way of the oil pressure switch. That way the pump won't run in an accident.
The oil pressure switch grounds the fuel pump relay on some models.

Jul 21, 2012 | 1991 Nissan 300ZX

1 Answer

HI I JUST BOUGHT A 1990 300ZX2X2 AND TODAY IT STARTED RUNING ROUG


try to start the car and unplug the coil packs one at a time. listen for changes in the way the car runs. it sounds like you have a dead cylinder or two. be aware of VERY small changes in the sound as i had mine running on 2 of six cylinders and it still ran. if you notice that you have a dead cylinder check the coil packs for corrosion on the connectors if they are fine. investigate the ptu (on the passenger side timing belt cover there are 2 versions the old version is known for failing and knocking out a few cylinders http://www.mdsmarthome.com/z/Z%20Tech/Z%20Tech%20PDF's/PTU%20Repair.pdf

rough idle could be caused by vacuum leaks and or incorrect timing should be 15 degrees before tdc

Dec 13, 2009 | 1990 Nissan 300ZX

2 Answers

1990 300zx non turbo has miss on 2 cylinders


dude, i think you have two spark plug cables cross over. go to your local autozone and find a "firing order" if it was a blown head gasket it would show on the compression test but i'm pretty sure its a spark plug cable cross over.

Jun 23, 2009 | 1990 Nissan 300ZX

1 Answer

Front 2 cylinders missing. leak not sure if it block or waterpump


THE TWO CYLINDERS THAT ARE DEAD..IF YOU PROBLEM WAS THE COIL THEN YOU WOULD HAVE A BUILD UP OF UNBURNT GAS IN THOSE CYLINDERS.. REMOVE BOTH PLUGS.. PLUG THE COIL WIRES TO THE PLUGS AND LAY ACROSS BLOCK ON GROUND HAVE SOME ONE ELSE START CAR LOOK FOR A STRONG SPARK... FIRST THOUGH WHEN YOU REMOVE PLUGS SEE IF THEY WET AND / OR DOES IT HAVE STRONG GAS ODOR...SUGGEST REPLACEING THOSE PLUGS.. IF STILL HAVE PROBLEMS THEN IT IS TIME FOR A COMPRESSION CHECK.. YOU CAN BORROW COMPRESION GUAGE FROM AUTO ZONE...AS FAR AS THE LEAK YOU ARE REALLY GOING TO HAVE TO GET DOWN ON ENGINE TO LOCATE THE EXACT AREA COMMING FROM... BUT WOULD NOT SURPRISE ME AT ALL FOR THE WATER PUMP TO BE CULPRIT

Jun 01, 2009 | 1990 Nissan 300ZX

3 Answers

Missing front 2 cylinders,and a water leak not sure if its block or water pump. 300zx n/a


change the distributor cap,rotar arm also, and ht leads and spark plugs also, the tick could be because it basically is empty on oil...

Jun 01, 2009 | 1990 Nissan 300ZX

1 Answer

300zx N/A Only running on 4 of 6 cylinders. HELP! Also have


It could be the rear main seal if You see oil dripping out the back of motor, but check the spark plugs, if 2 are all black and wet w/ oil, the valve seals could be leaking onto tyhe plugs and fouling them out. Good Luck!

Apr 22, 2009 | 1990 Nissan 300ZX

1 Answer

Need any spec sheet you have. Diagrams for the motor where parts are, wiring diagrams etc. Or help with why my car is only running 4 cylinders. Also develops a tick when idling, and warms up.


http://www.300zx-twinturbo.com/cgi-bin/manual.cgi

nissan 300zx online manual
I bought 2 of these twin turbo pigs for my sons.... nightmare to work on.

Apr 21, 2009 | 1990 Nissan 300ZX

1 Answer

Nissan 300zx starts smoking when reaches tempture


sounds like your rings are leaking oil into the cylinder.. causes blue smoke. would not do it until it is warm due to the higher viscosity of the oil at cold. try some ring seal and see if that reduces it.

Feb 18, 2009 | 1990 Nissan 300ZX

Not finding what you are looking for?
1994 Nissan 300ZX Logo

484 people viewed this question

Ask a Question

Usually answered in minutes!

Top Nissan Experts

yadayada
yadayada

Level 3 Expert

74945 Answers

Phil Lovisek
Phil Lovisek

Level 3 Expert

705 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22095 Answers

Are you a Nissan Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...