'92 300zx issues after running tank dry

[AnnieKatie]

Hello Nissan 300zx enthusiasts! I am new here and already posted this but I cannot find it so I am reposting it. I am hoping you may be able to give me some advice about my vehicle. This is probably going to be lengthy but I will try to make it as brief as possible. I own a 1992 white 300zx. The body is a non-turbo automatic but the engine in it is a turbo and the turbos have been removed. The automatic has been replaced with a standard. The car ran well for about 5 months after I bought it. I happened to accidentally run it completely out of gas 1 day and nothing has ever been right with it again. Initially, the problem was a fuel injector stuck open and that was repaired and the car was back to normal for about 2 days and then the same thing happened again. The car was running extremely rough and sounded awful and it went through a full tank of gas in about 10 miles. It was not a fuel injector stuck open this time around even though the car was acting the same as before when the injector was stuck open. When changing the oil we found tons of gasoline in the oil. I have had many different ideas on what the problem is at this point and to get a diagnosis is very costly because we do not even know where to start and my funds are extremely limited. 2nd issue is that I basically gave up and decided to sell it but I have no idea how much to ask for this vehicle in this condition if I do go that route and mainly I do not even know what the classification is to tell people what kind of 300zx it is? Thank you for reading and any and all advice is welcomed...

[NolimitZ32]

If it is indeed a TT engine without turbos then this is the root of many problems. I highly doubt it though because a low compression VG30DETT running without turbos would be an absolute dog to drive, like 0-60 in 13+ seconds dog.

If it is in fact as you say and the injectors are form a TT but ECU is NA then you will be dumping tons of fuel because the ECU and Injector size doesn't match.

You need to start with a compression and leak-down tests. (google/youtube these, they are pretty easy and autozone loans the testers so its free)

If the above come back with good results then you need to look at your fuel pump and injectors. I had an experience recently with my current project Z where the fuel pump was bad and was causing the car to idle like crap BUT it wasn't consuming fuel at extreme rates. Unless you replaced with brand new injectors (all 6) then the issue may be there. Finally if the o-rings weren't properly greased when installing the injectors you could likely have a leak at the fuel rail and be dumping tons of fuel into the engine (sounds like this may be your problem). This however shouldn't be an intermittent issue but still, I'd check the fuel rail and injector install was done properly.

[zxFarside]

[AnnieKatie]

Yes fuel pump and fuel rail are the 2 most popular answers I have received so far in my search for answers. Thank you very much for taking the time to post!

[NolimitZ32]

If you've already received some direction then go start testing. NO one will be able to diagnose your issue from afar, you have to put in some elbow grease to get this figured out. Use the FSM in the link in my sig, it is absolutely invaluable when working on these cars.