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Thebadinvestment

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About Thebadinvestment

  • Birthday 07/10/1995

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    Appleton, WI

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  1. Sorry, I am driving a 1987 Nissan 300zx Z31. I figured since it was in the Z31-300zx part of the forum I didn't need to specify. Thanks G-E for the advice! I will try and fix what you said might be the problem!
  2. I have been experiencing a problem with my fuel pump running. I put in a Nistune type 1 board into the ecu to tune my car, got it to run, but the fuel pump would cut out after running for about 30 seconds. It would prime the rail, but there would be no more fuel after running for 30 seconds. I replaced the fuel pump with a walbro 255lph, hoping it would fix the problem. Turned the key and the pump primed the fuel rail, good sign. But it ended up doing the exact same thing as the old pump. I took a look at the relays then and replaced both of the relays, still hasn't changed a thing. The Nistune software is giving a code in the consult gauge saying something like "ECU Fuel Pump circuit". I do remember when I moved into my new place I heard the fuel pump priming, but the keys were in my hands and the car was off. The objects in my trunk space were pressing on the wire connection from the fuel pump to the wires that lead to the ECU or relays (don't exactly know which). When I cleared the space I pressed down on the connector and was able to prime the fuel rail, haven't been able to do it since. Anyways, where should I start looking for wire problems? How do I find them?
  3. Well this is a freshly rebuilt engine. So, a leaky head gasket isn't possible, because I installed it properly. I checked the plugs and cylinders there isn't any coolant just fuel. The piece the radiator cap locks onto, that has the overflow hose connecting to it was the bad part. I do have a Chilton Service Manual, but that has no organization or really helpful info. I'll take a look at the nicoclub FSM to see if I can find anything.
  4. Alright I have a 1987 z31, base model, 5spd, and with a vg30e w/ upgraded head work. This was my project and I finally got it running correctly and idling fine. I could actually take my foot off! Then, the thermostat would open and coolant started leaking from the radiator cap. After that happened the engine started to dip in rpm and go back up a couple times then it died. So I replaced the overflow/ radiator cap lock part and it didn't want to start after. It would backfire out the exhaust, but wouldn't start. Again, everything is timed because it idled fine before replacing that small part. So I should be getting fuel, compression, and spark, right? I have a new coil now, that I accidentaly dropped because one end of the box opened and it fell out. Could that be the problem? NOTE: the stock coil was on when it idled correctly, and when it didn't start after I replaced the overflow/ radiator cap lock. I have a new rotor, cap, wires, spark plugs, battery, fuel filter, TPS, most vacuum lines, and terminals. I also cleaned the MAF to see if that would help. Still nothing. My father thinks it may be bad gas that sat there for ~6 months. It doesn't backfire anymore, it just cranks. I've tried having the accelerator down to see if there is just too much fuel, doesn't do anything still. I'm not trained in any automotvie technician or mechanical field. I just understand the basics so far, so if anyone knows the problem try to explain it in more lamens terms. Nothing too technical, but I'm not dumb. If you need more info just ask.
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