300zx won't start

Post by **Inklover17** » Wed Jul 18, 2007 3:49 am

I have been trying to get my 1984 300zx started for quite some time. We have replaced the injectors/fuel rails we tryed to start it with ether last night and it would run for about 2 seconds then die does anyone have any advice.

Post by **evildky** » Wed Jul 18, 2007 6:24 pm

why won't it run? lack of spark? or lack of fuel? easy way to find out, pull the injector plugs, and give ti a shot of starting fluid (it's best to spray this in the intake past the mas), if it fires right up you knwo your problem was fuel, if not then you have a spark problem or both, could also be the ECU, or the CAS which is in the distributor, or maybe the ignotor, please tell us more, what has changed other than the listed parts since it last ran? and we'll assume the timing belt hasn't snapped?

Post by **Inklover17** » Thu Jul 19, 2007 4:06 am

We have been using starting fluid and we checked spark and were getting it also at first we had fuel running out of the tail pipe but it has stopped. We changed the fuel filter. Maybe I'll just buy a new motor.

Post by **evildky** » Thu Jul 19, 2007 10:13 pm

have you checked the cas or the ecu? how about that timing belt? a new motor won't fix it if it's the ecu, chances are it wasn't fuel coming out your exhaust, maybe fuel mixed with coolant due to blown headgasket

just to clarify, you confirmed spark? at each plug ? is the distributor turning? have you verified compression? are the injectors getting thier pulse? is the fuel pump pumping? what happened since the car was last running?

Post by **Inklover17** » Fri Jul 20, 2007 3:44 am

Actually last night we put plug wires and a different distirbutor on I'm thinking maybe it's our injectors cause the injectors we put on the car were from a turbo motor would that make any difference?

Post by **evildky** » Fri Jul 20, 2007 7:02 am

yeah the turbo injectors are quite a bit larger and will flood the engine with fuel, I think they are about 20-30% larger

again, have we confirmed anything? si the belt good? what has happened to the car since it last ran?

Post by **Inklover17** » Fri Jul 20, 2007 3:08 pm

Timing belt is still good the distributor spins when the key is turned the guy I got it from said that he ran it in december. Other than that I think the only thing is the injectors.

Post by **evildky** » Sat Jul 21, 2007 8:42 pm

does the distributor work? they send out 2 seperate signals, one every 60 degrees and anoterh signal for every degree of rotation, have you cinfirmed the distributor is working?

Post by **Inklover17** » Sun Jul 29, 2007 1:33 pm

If our distributor wasn't working would we still be getting a spark?

Post by **sharjt** » Mon Jul 30, 2007 7:28 am

Maybe. Spark comes from the coil which goes to the Distributer. The Distributer is just a means of getting the spark to a specific wire/plug/cylinder.

Post by **Inklover17** » Mon Jul 30, 2007 8:44 am

We are going tonight to get new injectors from a junk yard. Hopefully this works my time is getting limited. Before I go to the desert again.

Post by **evildky** » Mon Jul 30, 2007 9:41 am

the distributor has 2 optical sensors in it, and it can fail intermitantly, the ignitor woud also be a good item to check, or replace from the junkyard

Post by **Inklover17** » Tue Jul 31, 2007 3:06 am

So we put the new injectors in and now it seems as if the distributor is not working you called it there. Luckily I have a backup. I hope this works it's getting really frustrating.

Post by **Inklover17** » Wed Aug 01, 2007 6:46 am

Still nothing time for a new motor. Definately need an ECU though.

Post by **Inklover17** » Wed Aug 01, 2007 6:56 am

Also what other Nissan motors will fit with the current transmission my buddy said a Mustang motor will bolt up. Cause when I get back I'll probaly just buy a new motor.

Post by **evildky** » Thu Aug 02, 2007 8:05 am

VG30 or VG33, you're buddy is wrong, if you had the turbo the trans internals are the same as some mustangs butt he bellhousings are not the same

Post by **Inklover17** » Thu Aug 02, 2007 7:04 pm

So don't buy a mustang motor?? That's cool where do you recomend buying a good used AFFordable motor?

Post by **evildky** » Fri Aug 03, 2007 6:25 am

junkyard? JDM engine importer? I gotta say Im not convinced you need a new motor, have you verified the CAS and ignitor are both working? ECU? MAF?

Post by **Inklover17** » Sat Aug 04, 2007 6:06 pm

I think my ecu is bad the other night I noticed there was a crap load of oil under the car and the dipstick smells like gas.

Post by **Inklover17** » Mon Aug 06, 2007 4:32 pm

What do you suppose that means?

Post by **evildky** » Tue Aug 07, 2007 6:52 am

dipstick smells like gas, you've been cranking with no spark the fuel goes into the oil pan, the rings have a gap in them so some anount of blow by is bound to happen, as for the oil on the floor, how much and where is it coming from? if there si a hole in the side of you're engine or no compression in one cylinder by all means replace the motor I just hate to see you replace everything but the actual problem

Post by **Inklover17** » Fri Oct 05, 2007 7:10 am

Im getting ready to purchase a rebuilt motor you said vg33 what one is that? I hope this new motor and a ECU helps my problem.

Post by **evildky** » Mon Oct 08, 2007 9:50 am

the vg33 came in the pathfinders form 98- whenever, and frontiers form 99- whenever and 00 xtera's till whenever

300zx won't start

300zx won't start

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