Fuel Injection
Posts about fuel injection systems and related topics.
751 topics in this forum
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- 5 replies
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I've been driving my newly acquired 75 280Z for a week now at just about 200 miles logged. When the car was shipped to me I got it with a full tank which I thought was both odd and nice of the PO. At half a tank I got some sputtering like it was out of fuel so I thought the PO didn't fill it up and instead had a bad gauge and I was on empty, so I filled up, the gauge correct, btw. Again at half a tank (and now lower) I'm getting the sputtering again AND a buzzing sound from the rear of the car. I changed the fuel filter and the fuel that came from the IN side was a nice brownish tint. After changing the filter the buzz was gone and I noticed an instant improvement in thro…
Last reply by rcb280z, -
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L-jetronic system trouble and maintainence article. http://www.hiperformancestore.com/Ljetronic.htm
Last reply by Wade Nelson, -
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My injectors are not firing, so I've done some tests... TL;DR: Has my ECU gone bad? Tested at the ECU harness, and each injector connection reads the proper voltage when grounded. Tested at the individual injector connectors, and read the proper voltage as well. Manually fired the injectors by grounding each corresponding terminal on the ECU connector. Turned ignition to "ON" and heard each injector click. Checked the ground circuits on the ECU harness, and all were fine. Basically, wiring from ECU to injectors tested OK, and wiring from ECU to ground tested OK. I've read that ECU failures are pretty unlikely, but all evidence seems to suggest that it may be at fault. Are…
Last reply by FastWoman, -
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I'm in the gathering stage for parts and info on changing my fuel injectors and connectors. I see the following info from the Atlantic Z club regarding depressuring the system http://atlanticz.ca/zclub/techtips/fuellinedepressure/index.html I have two questions with regards to this; does the polarity matter on the cold start valve? And do I need to take the cold start valve off the intake manifold or can I leave it in place and just expell the gas into the manifold? Of course this would kind of flood it and may be wash gas past the rings and into the crank. But I'd rather not have to scrape gasket off and reseal the cold start valve again if I don't have to. Any advice i…
Last reply by 240260280z, -
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On the F.I. L28's, the hose from the valve cover to the throttle body boot has an oily residue in it. I believe this to be normal in small amounts but mine has started to back up into, as far upstream, as my AFM. Could this possibly be my valve stem oil seals going bad?
Last reply by John Coffey, -
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I've heard some people mention that there are bullet connectors on the wires leading to each fuel injector... Can anyone confirm or deny this rumor? I've peeled back my wiring harness a few inches and found nada. I've also felt and squeezed upstream from there and have found nothing that seems like it would be a connector. Has anyone actually seen these beasties with their own two eyes, or is this wishful thinking?
Last reply by TomoHawk, -
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Besides replacing the fuel injectors on my 76, I also need all new connectors. I see some seem to come with plug-in pigtails and some with just bare pigtails: http://compare.ebay.com/like/220774721149?var=lv<yp=AllFixedPriceItemTypes&var=sbar http://www.thezstore.com/page/TZS/PROD/SFC03E/11-3059 My question is regarding the ones with plug-in pigtails, on the injector harness somewhere under the shrink rap covering, are there maching plugs for the connectors which come with plug-in pigtails? Or do I still have to splice the harness and add matching plug-in connectors? Thanks Gary
Last reply by FastWoman, -
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I need to replace that section of fuel hose on my 76. The problem is that regular fuel line kinks when I make the bend to connect it. Does anyone know where I can get "formed" fuel hose for that section of the fuel system? I did do a forum search first before posting, but none of the threads mentioned where I could get a replcement fuel line for that section. Or is there a way to make it fit without kinking it? Thanks Gary
Last reply by FastWoman, -
- 29 replies
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So I'm giving my AFM the once over before putting it back on and I notice that the air metering vane looks odd... Here's the outlet side with the vane closed: As you open the vane you can see that the bottom edge of the vane is not straight: So I'm guessing that it's not supposed to be that way, and it's bent as the result of a backfire into the intake or something? And simply for posterity, here's a pic from the intake side:
Last reply by Zed Head, -
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I used 1/2 gallon of muratic acid mixed with 1/2 gallon of water and swished around for about 10 minutes then drained and put 1 box baking soda mixed together with 2 gallons of hot water and swished around then drained. Used a leaf blower to dry up the inside then poured in a quart of acetone and swished and shook for a few minutes then hit it with the leaf blower and an air hose. Poured in a quart of Red Kote and rolled all around and still drained out almost a half of the quart. I'll definitely apply a second coat in a day or so. Worked great and was alot easier than I was expecting.
Last reply by Diseazd, -
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Is the Textron injector cleaner safe and effective at cleaning the fuel injectors? Thanks.
Last reply by Kurbycar32, -
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I saw the add for Gforce at the top of this web site and was wondering if any one has put one in a 78 z?
Last reply by TomoHawk,
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