Fuel Injection
Posts about fuel injection systems and related topics.
748 topics in this forum
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ey guys! I have a 1977 280z which used to have the California specific emissions tech. I recently "refreshed" the engine after I got it. I completely redid the fuel tank and fuel system from the tank back going as far as to replace all the hoses for the vapor tank as well. I am just going to list off new things. rebuilt fuel injectos new fuel pressure regulator new fuel damper fuel lines fuel pump rebuilt fuel rail rebuilt head and new headgasket all new seals around the engine spark plugs rotor distributor cap plug wires oil pressure sender water temp sendor water pump/…
Last reply by Captain Obvious, -
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need some advice. Apparently i have all the ignition stuff on and was trying to fire up the car. It turns over great it just wont ignite and crank. No idea what the issue is or even could be. Everything is rebuilt and new including new Ztherapy carbs, lines etc. Gas is being pushed from the mechanic fuel pump and all the plugs are sparking good. Could some wires not 100% right at the ignition or ballast cause this? What about bad timing? Any thoughts are welcome
Last reply by Mark Maras, -
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77 280z. Apologies for the crusty picture. Is the circled object at the top of the screen a damper or a regulator? And if its a damper, is it adjustable? Struggling with fuel pressure. I have an in-line gauge installed after the fuel filter. When the car is running, fuel is only at ~25PSI (compared to 34-36PSI expected). I took apart this whole section to remove some of the rust and replace the hoses, but I can't remember if I messed with the bolt on the top of the damper (and if it matters).
Last reply by siteunseen, -
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Browsing on Motor Sport Auto and saw that they have relabeled their red links to the proper brown, and it looks like they have also derated them to the proper amperage. Yay! Old Z wiring is safer now. https://www.thezstore.com/page/TZS/PROD/12-4329 https://www.thezstore.com/page/TZS/PROD/12-4336
Last reply by Zed Head, -
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How many of you guys have replaced the fuel rail with either new design or stock?
Last reply by siteunseen, -
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About a year ago I experienced hesitation when I had the car on the highway at about 70 mph. I got back home and asked for advice on where to look in the system. I got a response to remove the fuel filter and blow it out with compressed air. I did that and that seemed to be the end of the problem. Now, a couple of weeks back I had the same thing happen, so I got the car back home and took off the fuel filter and did the same thing as before. I got a lot of particulate come out as I emptied the filter and then applied compressed air. I then took the car out the next week and it was worse than before. I took the filter off and got at least as much junk as before. …
Last reply by siteunseen, -
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Really strange thing happened today. I was sitting at a stoplight idling and the car suddenly died. The car runs so smoothly that I didn't even know it was off until I looked at the gauge and saw the e-brake light on. I turned the key and it fired right back up like nothing happened and drove home another 20 miles without issue. This is probably electrical/spark related since if it was fuel the car would have stumbled before it shut off I'd assume. I popped the hood when I got back to see if anything was loose then checked under the dist cap to see if the pickup coil was chewed up at all and everything looks perfect. Any ideas where to start?
Last reply by Captain Obvious, -
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Good Day, Own a 1976 280z fuel injection and have starting issues. I replaced the fuel pump and installed a new fuel filter. I have 1/4 tank of gas with new fuel. I pulled the wire off the starter to see if the fuel pump is running and it is when turning the ignition key. However, I am hearing a clicking sound coming from the fuse box area which is puzzling. Also, I pulled off the short fuel line coming off the top of the fuel filter and put the end into a glass jar to see if fuel is coming out. When turning the key, no fuel is coming out. All Fuses are good and all hoses are checked for air leaks and nothing visible. Checked and cleaned ground wires, even the fusible li…
Last reply by Cruzzar, -
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OK, so I am wrapping up getting the 76z ready for sale. Obviously taking my time to part ways. I am installing my fuel injector / railing and one of the plastic injector holders broke. I am pretty sure that all of the parts including the injectors were original. I am having trouble locating the proper part to purchase. Any help would be appreciated. Thanks.
Last reply by siteunseen, -
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Getting ready to soak 2 of my fuel injectors that appear to be clogged. I was planning on soaking them with seafoam. I just read a post that said never to soak them in any kind of cleaner because the coil I’ll get damaged. Thoughts/Comments.
Last reply by 240260280, -
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First post here but have been a spectator for about 4 months trying to absorb as much information as possible. I recently obtained a 1975 Datsun 280Z from my neighbor who purchased the car new as an anniversary present for his wife. He owned the local Datsun dealership at the time so all maintenance was done by his dealership. She drove the car until it had about 106,000 miles at which time she got a new car with an automatic transmission (this was a 4 speed car). The car has had a pampered life. She always garaged it and took good care of it. He put a non op with the DMV, pulled the plugs and oiled the cylinders, drained all of the fuel out of the tank and parked it unde…
Last reply by Mark Maras, -
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This 78 280z is the car I referred to with my EGR question earlier today. The fuel pump had been removed but a new Nissan pump was in the car. I checked it's part number and it is the correct one for this car. That's a score because Nissan isn't giving them away! The new pump does not have a pumping direction marked on it. I suppose I could run some water through it to determine in what direction it pumped but I'd rather not do that to a new pump. One end of it is flat and has no hose connections. The other end has an extended nipple for a hose. On top of the canister, near the flat end is the other hose nipple. The electrical connections are both marked so I'm g…
Last reply by siteunseen,
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