Engine Start up Video

[300zx1990ttjdm]

Engine sound after first start up after finally getting some spark how does this sound too you... No exhaust on just Downpipe

[youtube]http://www.youtube.com/watch?v=eeN5wF3pe68[/youtube]

http://www.youtube.com/watch?v=eeN5wF3pe68

[300zx1990ttjdm]

Anyone have an opinion how its sounds to me sounds like theres a ticking but im not to sure i think its only running on 5 cylinders tho too was not getting spark on any before this start-up changed ptu checked volts to coils from ptu with key on 1 of the 6 no reading if this video is not good enough let me know ill make new one

[t.mcginley.jr]

I hear something that sounds like ticking but it could also be a slight miss from one of the cylinders. Did you do a power-balance test yet?

[300zx1990ttjdm]

Not yet gonna do that tonight and check ecu for codes

[300zx1990ttjdm]

Just an update i cleaned ptu, coil pack, injectors and maf connections then did a power balance test. all cylinders made car run worse. besides #2 nothing changed. checked for spark got it, then injector ohm reading and nothing. im guessing thats my problem i got another set of injectors, so gonna thro one in there. also ECU code 12 and 34 are going on MAF might also be done? Does 34 make car run bad? or just lower boost?

[t.mcginley.jr]

Go ahead and put the new injectors in, making sure not to pinch and O-rings when installing.

Try cleaning the MAF first (with MAF cleaner). If you still get code 12 it might be shot. Code 34 will cause the ECU to put the car in safety boost mode (6psi). You can relocate the knock sensor to the back of the plenum for easier access, new OEM nissan KS are about $35 on ebay.

[300zx1990ttjdm]

pulled plenum off got down to my injectors and changed my one dead one others OHM Out at 12. I know everyone says dont just replace one do them all but i had some spare injectors that were in decent condition from another motor. So just replacing that one dead injector for now. Trying to get this car back on the road, hasnt been on them for Years Haha

So heres my Question How do these injectors look like there performing to you? i feel like 2, 4, 6 arent getting enough fuel sometimes but im actually not to sure i could be wrong... What would cause one side of rail to not get enough? also havent tested fuel pressure yet need to get a gauge could that cause not enough fuel?

[youtube]http://www.youtube.com/watch?v=KNcG4EKMDEU&feature=plcp[/youtube]

[youtube]http://www.youtube.com/watch?v=Ukpv83Xu4sE&feature=plcp[/youtube]

[youtube]http://www.youtube.com/watch?v=2Qs-aT_AjVk&feature=plcp[/youtube]

[t.mcginley.jr]

Visually I can't really tell the difference. If the fuel pressure wasn't high enough coming out of the filter (~43 psi) then all of the injectors would be spraying less. Even if the injectors ohm out correctly they can still get dirty/clogged on the tips causing messed up spraying. I guess you could try soaking the ends in injector cleaner but that's up to you. An alternative would be getting a reman'd OEM set off ebay. You didn't say if this was NA or TT

[300zx1990ttjdm]

Yah i just watched videos again just now, it IS hard to tell they actually seem pretty decent... haha but yah in person ocationally as spinning cas faster and faster seemed like that one whole side was not getting enough fuel to do a propper squirt

Its also a TT with stock old style injectors