Fuel Injection
Posts about fuel injection systems and related topics.
748 topics in this forum
-
After 18 months of father/son restoration, we are finally looking to get this thing running. Took it all the way down to rolling chassis, we rebuilt the engine, rings, bearings, timing sprokets, chains, valve seals. Put it all back together, with new coil, cap, rotor, wires, plugs, injectors, fuel pump, filter. Car will start, but not fire. Plenty of good spark to each plug. 36 psi fuel pressure to the rail. Used both the factory service manual and fuel injection bible troubleshooting guide. Traced it down to the injectors not receiving signal to fire. However, the cold start valve does. How is this possible? We've worn the battery down, and recharge it, each sessi…
Last reply by Scooter3, -
-
- 16 replies
- 4.9k views
Ok, I have a megasquirt unit but I am considering using the OEM pieces for cold temp cranking fuel. I already use the AAR for fast idle. I realize this may sound like a head scratcher but I have my reasons. So my question is how would I wire this since I no longer have the stock EFI harness that I could use. What I was thinking is this: Run power from the positive battery post through a relay that closes the circuit only when the starter is engaged which then connects to the thermotime switch. I don't think polarity matters on either the thermotime or cold start injector so then run a wire from the thermotime switch to the cold start injector and from the cold start injec…
Last reply by Adam78, -
- 1 follower
- 5 replies
- 1.3k views
Hey everyone I am having some very real issues finding an afm for my 78 280z. After an exhaustive search, I have the Nissan OEM part number (22680-N4213) finally narrowed down, but finding a replacement for less than $475 is not working. Sadly, most pick n pull places in the Denver area don't advertize having z cars on the lots, so I can't even look there without spending several hours a day for the next several weeks weeding through the garbage... any advice? If anyone has a spare they'd be willing to sell, I'll gladly pay. Dave
Last reply by Consigli, -
- 4 followers
- 45 replies
- 6.8k views
I've got a 76 z with the EFI. When I break open the fuel line just above the fuel filter for example (with the car off of course) there isn't any pressure in the fuel line and when starting it takes a while because I think it has to build up pressure again. I've recently put a new fuel pump on it and fuel pressure regulator. I did get rid of the fuel damper since it was the original and I don't think it was working and they aren't available any more. The engine does seem to run well, and smooth once started and warmed up. So my question is, what component is responsible for maintaining the fuel line pressure when the car is off? It's like somehow the fuel drains back …
Last reply by SteveJ, -
- 1 follower
- 16 replies
- 5.3k views
When I had the intake manifold off for polishing, I noticed there was a layer of black stuff (oil vapor/carbon from the rocker box) inside, so I tried to clean that out too. I tried Gunk Foamy, and several cans of carbureter spray. From the brown liquid that came out, I concluded that some of the black stuff came off, but when you looked in the throttle hole, you could still see it was there. I even tried a treatment of Seafoam, which is typically for carbon deposites on the valves and cylinder head, but this stuff was stubborn. Is there any other way to get the carbon out of the intake manifold, besides taking it off and using some kind of industrial treatrment? th…
Last reply by TomoHawk, -
- 6 replies
- 1.5k views
Does the direction of flow through the regulator matter? I ask because I have a aftermarket fuel rail (bar stock style) with an aeromotive FPR and I am going to replace the fuel lines as well as put the stock regulator back (I'm hunting for a leak). Of course, I'll have to mount it somewhere since I don't have the original fuel rail and therefore I can't remember which way is the inlet and outlet for the regulator. Thanks :-)
Last reply by siteunseen, -
- 1 follower
- 11 replies
- 4.4k views
I have a early 76 280Z (8/75) that I do not have a correct ECU for. I could not find a compatibility chart for the the correct ECU for a early 76. The AFM in the car is a A31-060-001. I spoke to MSA but they could not tell me what the correct ECU was for my car. Additionally the car has California emissions. Thanks in advance
Last reply by siteunseen, -
- 5 replies
- 1.7k views
If you wanted to hook up your engine & sensors to a electronic or computerized data logging system, would it be possible? Most of it is just resistance, but I'm wondering if tapping into the sensor might other the ECU to change its outputs. I would probably be interested in recording: Coolant temperature (resistance) air temperature (resistance) AFM (resistance) RPM (12V pulses) fuel injectors (12V pulses) I suppose there are some electronic data collectors all ready to use? I would probably use the data collection while the car is parked. thxZ
Last reply by Chickenman, -
- 14 replies
- 4.2k views
Just a couple of suggestions on Fuel Injector cleaners that REALLY work. I've personally used these products on my 1998 Audi and 1976 280Z and can attest to their effectiveness. 1: Liqui Moly Jectron fuel injection cleaner. Liqui Moly is a German company that makes top quality Lubricants and other Automotive chemicals. Jectron works really well at cleaning injectors. Sometimes it takes 2 or 3 treatments, but it really cleans out gummed up injectors. Good as a regular maintenance product. 2: CRC 1-Tank Power Renew: CRC products are always good quality. I've tried this product and it really cleaned out my high mileage 280Z injectors. It's a bit pricey, so I use…
Last reply by TomoHawk, -
- 1 follower
- 21 replies
- 4.1k views
Hello all! I have been slowly getting my '77 280Z 2+2 5 speed manual up and running. It seems to be going well for the most part. However, the last two tanks have been giving me some pretty poor MPG! When I first got the car running, I filled the tank, set the tripometer to zeros, and drove until I used what I thought to be about a quarter tank of gas. I refilled, did the math, and I was getting about 15 MPG. This was with a combination of in city and highway driving. I would have liked it to have been better, but could have lived with it if I had to. However, over the last two tanks of gas, when calculating MPG I am getting between 11 and 12 MPG! Again, this …
Last reply by gundee, -
- 5 followers
- 155 replies
- 18.1k views
The Zfuel thread was getting kinda long, so I thought I would start a fresh one along with the new update. The original thread is here: http://www.classiczcars.com/forums/fuel-injection-s30/49964-zfuel.html Well, today the HellFire ECU ran my Z quite nicely using 100% stock components (including cold start valve) & of course the stock AFM. It started and was very rich, which I did expect as I just had guesses in for AFM calibration. I tweaked the numbers and brought the pulsewidth down and the engine smoothed right up and purred around 800-900. I was able to track the CLT and IAT temps come up on the GUI and could tell I was having to lean up the fuel as it warmed up…
Last reply by FastWoman, -
- 1 follower
- 11 replies
- 1.5k views
All this talk about Vacuum Tube ECU's etc got me searching E-Bay. Looky what I just found... and bought. $500 USD complete:
Last reply by Chickenman,
-
Recently Browsing 0 members
- No registered users viewing this page.