Fuel Injection
Posts about fuel injection systems and related topics.
751 topics in this forum
-
- 1 reply
- 1.4k views
Could Seafoam maybe break something loose and mess up my Fuel Pressure Regulator? When I unhook vacuum to FPR my car runs like it did before Seafoam (better).
Last reply by cozye, -
-
- 4 replies
- 1.9k views
A while ago,there was a"spirited" discussion as to "hot start issues" related to fuel delivery.My symptoms were that the car was hard to start when parked for 20-30 minutes.Cold -no issues,also when hot-no issues when parked for 5-10 minutes or longer than an hour. Last night(2000 hrs) i charged the system and at 0700 today,i still had 30+ psi of fuel pressure. The final test was today during some "errand running" with a ambient air temp of 106.5 degrees,190 degrees running temp and 220 degrees at re-start. No more starting issues PERIOD.In fact the car starts better at all temps and runs smoother. All i did was clean & flow all the injectors(CSI included)and installe…
Last reply by Z train, -
- 4 replies
- 8.8k views
I was in the salvage yard the other day and found an in-line Schrader valve on the fuel lines of an Isuzu Rodeo. I've looked around on the internet for something similar but could never find anything. The Schrader valve is common on today's fuel injected cars, as a port for a fuel pressure gauge connection, but the old Z cars don't come with them. All of the newer cars I looked at have them installed on the fuel rail so not easy to transplant. I haven't installed it yet but it fits 5/16" hose like the stock 280Z lines so should be easy to splice in. It will be convenient for fuel pressure checks or adjusting, and for relieving pressure if I need to remove any fuel sy…
Last reply by ZCurves, -
- 6 replies
- 2k views
When I push in the clutch at Stop Signs or Red Lights or any other time I'm about to stop my '77 stays between 2,000 & 2,500 RPM for about 5 seconds then falls down to normal idle. Any advice as to what it could be? Opened Throttle Switch, black box on manifold, looked like new. Air sprayed the dust and cleaned the plug-in with electrical cleaner then Dielectic grease. Still does it. So I think extra fuel is burning off but I don't know squat. Help.
Last reply by siteunseen, -
- 5 replies
- 2.5k views
Is there an easier way than wrapping a towel around fuel filter line? Maybe some kind of valve somewhere?
Last reply by sblake01, -
- 3 replies
- 1.9k views
Hello everyone. I have a 1975 280z and I can't keep it running. I will describe the problem. I changed the key part of ignition works fine then the fuel pump wasn't working. Got that working also have good fuel pressure. The only way I can get it to run is to pour gas into the intake by the airflow. It runs great until it uses that fuel that I pour in. Does this mean that my injectors are all cloggeg? Or does it mean my relay isnt working. I can feel it click when I turn the key and the fuel pump works so I figure its not the relay. I also know the gas is making it to the fuel rail because I can losen a hose clamp and gas leaks out right before the injectors. Is there som…
Last reply by FastWoman, -
- 13 replies
- 3k views
Hello everyone. 1st post so I hope it's done right. I bought a '77 in pretty good shape. Hadn't been driven in awhile but would crank and run. Drained the tank, cleaned out cone shaped filter in fuel line from tank. Seemed to rev up better but when I took it for a drive fell flat after 3,000 rpm. Put fuel gauge in between filter and fuel rail and it shows 25psi at idle but when I give it gas it goes down to 20psi. Should I put new fuel pump on? Found Bosch at Advanced for $240.00 after 20% off $300.00. Does the fuel dampner/regulator ever get out of adjustment? Could it be that? Still holding at 22psi after not being cranked for 12 hours. Also have been cleanin…
Last reply by FastWoman, -
- 0 replies
- 1.6k views
I have a 5/77 280. What is the difference between the black or green base on the cold start valve? I know the 75-77 models use the same cold start valves and the 78-83 use a different one. which one is which? I am putting my z's f.i. system back on now (restoring) and for some reason I can't remember which on is correct. I have both green and black and don't remember which one was on my intake. I have everything else bagged and tagged except this! Your help is appreciated. Bob
Last reply by rcb280z, -
- 2 replies
- 4.7k views
Hey all I hate to not get a chance to introduce myself before jumping in and asking for help, but long story short I'm a new proud owner of a 77 280z with an f54 p79 motor. I'll do what I can to give a brief overview. (I'll do a full detailed intro later on) So I recently bought a 1977 280z with a 83zx f54block p79head motor, 83 zx5speed with turbo clutch/flywheel. (I finally got a Z!!! I've waited many years for this ) Its actually this car http://www.zcar.com/cars_sale_1970-83_240z_260z_280z_280zx/1977_280z_nice_clean_car_lots_mods._899197.0.html My original problem was the fuel pump was not shutting off when I turned off the car and took the keys out of the ignit…
Last reply by Sito, -
- 7 replies
- 2.6k views
I have a 1971 240z and i want to know how hard it is to put in a fuel injection system or how long would it take?
Last reply by 240260280z, -
I have a 1978 280z 5 speed. It has the AFM on it, that has an air bypass screw on both sides of the AFM. Can someone tell me more about them, when to adjust them, when to leave them alone etc? I searched the forums and didnt really find what I was looking for. For one thing....turn CW will richen the mixture and turning CCW lean it out, is that right? What is the way to adjust the CO readings on the car (assume a normal running engine)? Do you just need to adjust the AFM screw(s), or do you also have to adjust the air bypass screw(s) too? Lastly, does the idle adjustment spring and the AFM air bypass screws work in conjunction with each other? I dont understand yet how a…
Last reply by grantf, -
So I have been trying to get better gas mileage in the last few days. So far I have done some easy things that needed to be done anyhow like a new spark plug wire set and rotor cap, an oil change, inspected and replaced a leaky vacuum hose and a timing adjustment. So far nothing has really improved engine performance with the exception of the timing, it was about 5 deg. advanced not to bad. I timed it back to the 10 deg. mark and the engine seems to run smoother no real power increase but it does run nice and has a stable idle. So next is to look at the spark plugs to see what they can tell me and I am thinking about bringing my injectors in to an injector shop for cleani…
Last reply by argniest,
-
Recently Browsing 0 members
- No registered users viewing this page.
Patcon
