Fuel Injection
Posts about fuel injection systems and related topics.
748 topics in this forum
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- 1 follower
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This is off the intake manifold on my spare engine. I am toying with the idea of trying to get it running on the existing parts to base line it before any decisions are made as to rebuilding the engine. So 1st order of business is to get the fuel injectors working. So far I am up to 3 working. here is a video of my setup to unstick some frozen injectors. The 3 remaining hard cases are now off the rail so I can get some PB blaster down the inlets hoses. The one under suction did NOT come unstuck. I will run them for several hours and see if anymore come unstuck. If not I will try the suction approach again, but will use my 2 stage vacuum pump rather than the little ha…
Last reply by Dave WM, -
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I would like to build an AFR meter using an Arduino board, and I would like to know if anyone has a detailed chart of voltage v AFR for a narrow-band oxygen sensor. Yes, I searched for a long while, but you guys usually have useful engine data. There are lots of chart images, but they all look like a curvey Z, so obviously, there isn't enough detail to pick out coordinates to plot in a spreadsheet. If I had a chart or table with enough detail, I could generate a formula or a lookup table. The former would be better. It's just too bad the LCD displays are monochrome, because colour would be easier to interpret while driving, I suppose I could add some …
Last reply by TomoHawk, -
AFM switch 1 2 3
by chiefmd- 3 followers
- 28 replies
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I have a76 280Z refurbished AFM (from MSA) that has only been on the car for a couple of months. I'd like to put on my 77 280Z. It is a 7 pin 3 hole mount and looks exactly the same as my current AFM that's on the car. It has a tag with " FUEL INJECTION CORPORATION " and the #170348.
Last reply by EuroDat, -
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Does anyone have a number for the flow rate of the original OEM factory injectors? And how about a Bosch P/N for the original? Anyone have documentation for this kind of info? I'm sure it's out there, but I'm also sure someone else has already gone hunting and has that info at their fingertips.
Last reply by EuroDat, -
- 2 followers
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Every so often someone will post a thread about not getting being able to get enough fuel up front to the engine, they have replaced the filters, the pump ... and so on. Here is an obstruction I have never run into before and is completely hidden, there is a rubber sleeve going through the subframe between the tank and the fuel pump on my 77, the fuel feed hose goes through that hard rubber sleeve. I have started scraping in that area so cut one side of the hose and pulled it through, for some reason the hard rubber sleeve has contracted and crushed the fuel hose taking a 9mm ID hose down to 4.5mm. I guess maybe age did it or gasoline vapors coming through the hos…
Last reply by gwri8, -
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I just finished refreshing my intake manifold/injectors/ignition system and I'm attempting to get this thing running right. Having never before actually experienced a properly running Z, I feel like I'm going in circles trying to get it to where it is somewhat healthy. Here is where it sits as of this evening: It'll start after a few cranks, but usually dies a few times, then picks up a high idle (maybe 1500ish). The idle will come down to about 1200 RPM after it warms up (about 2/3 to 1/2 on the temp gauge). The conditions at that point (its fairly steady here): RPM: 1100-1200 Timing: ~15 BTDC on the crank pulley (this is where it seems to be happies…
Last reply by Neb, -
- 3 followers
- 36 replies
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I have an L28E with L-Jet EFI. I was thinking of building an AFR (air-fuel ratio) gauge using some common electronics stuff. It lights up LEDs from a signal generated by a narrow-band oxygen sensor in the exhaust pipe. But, I question the legitimacy and accuracy of the gauge. How does oxygen in the exhaust tell you how much air and fuel is going into the cylinders? There is no sensor that will do that, and it would go into the intake manifold, not the exhaust pipe. The best you can do is to use a modern engine, with a programmable controller to measure the air (via the AFM) and calculate the amount of fuel inject from the fuel pressure and the injection …
Last reply by TomoHawk, -
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Is there such a thing as a an ignition sensor/rev counter with a bluetooth output, so you can watch the Revs on a phone or computer? Or how bout just a coil or spark sensor with bluetooth? Some racing loggers can display the revs if you have OBD (which a Zed doesn't have) or a bluetooth SPP adapter.
Last reply by TomoHawk, -
- 1 follower
- 9 replies
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Hi all, My fuel pump died so I'm replacing it with a new one. I just wanted to have a quick sanity check to make sure I'm not going to burn this one up. My only concern is the new inlet for my fuel pump goes to the filter which is about 2 inches above the outlet of the fuel tank. Please let me know if you notice anything wrong other than I haven't wired up the pump yet.
Last reply by Hodgimus-maximus, -
- 2 followers
- 21 replies
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This is on my 76 280Z. After running the car for awhile, my fuel tank gets pressurized ---- When I take off the gas cap I get a huge rush of air coming out of the tank, a big whoooosh. Looking at my service manual, I can't tell if if the check valve is under the car or behind the passenger side rear panel near the vapor separator in the hatch. I saw in an old post where a guy had a similar problem which was corrected by replacing the check valve. Of course, I'm never going to find another check valve for sale, but I first just want to know where it is located. Thanks Gary
Last reply by Captain Obvious, -
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- 10 replies
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I have a 77 280z that I purchased this summer for a winter project (or longer). Working on the fuel system so I decided to take the injectors to NAPA to have them rebuilt and cleaned. All good just one injector has a wider spray pattern than the others but flow rate was consistent, 49, 48, 49, 48, 48, 49 ML for 30 seconds. First, I can't find anything on the flow rate for the injectors, Secondly can't find anything on the injectors. Here is a description\of the injectors: Light green ( Turquoise ) plug with markings that say RAM, RIM-116, 7016. Would appreciate any input. Thanks
Last reply by chiefmd, -
- 3 followers
- 20 replies
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A while back I cleaned my 280Z fuel pump and replaced the o-rings. Its running ok and I compared it to an old reserve pump. The reserve pump delivered about 75% of the flow compared to the one in the car. Since these pumps are getting harder to find in good condition I decided to take a closer look at the spare pump. The outside looked shocking, corroded and rusty so I cleaned and painted it to make it look respectable. After opening it up Im wondering it was worth the trouble cleaning and keep it as an emergency unit. The inside is showing a lot more signs of wear compared to the one in the car. There are possabilities to improve it. I was thinking of making a n…
Last reply by chiefmd,
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