1990 300zx no gas getting to spark plugs

Nissan 300ZX technical discussion forum: Maintenance, performance, installations, modifications, how-to's and troubleshooting.
volcomzforme
Posts: 3
Joined: Mon Feb 22, 2010 12:17 pm
Car: 1990 300zx n/a

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hey hows it going.. im new here.. anyways my 300 is having a few problems.. at first it started hesitating accelerating and then lugged around for a block or 2 then completely died. after that trying to turn it over it feels like it wants to start but won't.. i changed the fuel filter and checked the lines and the fuel is flowing, but its not saturating the spark plugs at all hence the title. so im wondering what could be the cause of this problem, ive checked other sites and it says it could be the CAS or the PTU.. (crankshaft angle sensor- Power Transistor Unit).. does this sound familiar to anyone else? and if so can i fix this myself?


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vape-one
Posts: 416
Joined: Wed Oct 29, 2008 6:01 pm
Car: 1990 300zx

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http://www.es-ab.se/z-car/IdleTech2.htm ... eTech.html

After you try to start the car

If gas fails to literally spray out of the fuel line with the filter on it then you either have a blown fuse or relay... An more importantly faulty fuel pump..

Also there is a fuel shut off switch on driver side in hatch behind panel near rear tail light..

Also check for corrosion on injector wiring an the grounds for injectors.

Also you might wanna Take spark plugs out an ground a plug on plenum an have a buddy turn Z over an see if your getting spark..

Hope this helps..

volcomzforme
Posts: 3
Joined: Mon Feb 22, 2010 12:17 pm
Car: 1990 300zx n/a

Post

hey thanks alot vape-one u sound like u know alot about z's.. im hoping to get to that point and every little bit of information helps. ive heard these are the hardest cars in the world to work on. anyways so yeah i am getting fuel pressure all the way up until the fuel injectors. the problem is it won't spray into the combustion chambers. which is why i think its a cas problem. is there any way to check if its cracked or something? i still cant get it started and i hate having a sick car haha.. its like my kid or something now.. anyways thanks alot hope this helps.


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