Questions tagged [fuel-injectors]

A device that meters the proper amount of fuel into an engine cylinder. It is controller by the engine control computer.

5
votes
4answers
318 views

Why isn't injection managed to use the entire intake stroke?

As far as i know, electronic fuel injectors only know two discrete states, on or off. Under light load (ie. low rpm and throttle) the injector doesn't have to deliver much fuel. So naturally the ...
3
votes
1answer
136 views

Why do injector prices vary so vastly?

I'm gathering components for my setup, and at the moment I'm looking for injectors. Those things go from $8 at AliExpress to $150+ per piece at the "genuine stealership". One thing really ...
13
votes
2answers
1k views

How to determine injector size for custom engine?

I've got a 2.5 L engine here for which I do not know the performance specs (yet), because it's customized. I need to select injectors for this build, but there seems to be only one equation on the ...
1
vote
1answer
686 views

Fuel Consumption high

I currently owned a Toyota KDH200. Manfactured year 2006. The Engine is 2KD (2490 cc). (Fuel Type : Diesel) I had an issue with fuel Consumption so I went to a mechanic. He scanned the vehicle (he ...
6
votes
2answers
1k views

How does a cobra alarm system disable starting

I have a 1998 Mazda 626 with a cobra Auto security system. I suspect some problems I have been having are related to this system and was wondering exactly how it disables starting. Specifically one ...
3
votes
1answer
741 views

What sort of maintenance do GDI injectors need?

The 2014 Lexus IS350 reminds the driver that "injector maintenance" is required every 10,000 km. Besides this advisory annoyance, as far I can tell there is no difference in drivability. I don't ...
6
votes
1answer
551 views

Can Getting Fuel Injectors or Ignition Coils Wet Ruin Them?

I have a 2005 Suzuki Forenza Wagon where I recently cleaned the engine compartment. I was a little careless during the cleaning and water got in under the spark plug wires to sit around the top of the ...
7
votes
1answer
99 views

Fuel injection modification for increased displacement

I am working on a 2 cylinder, 250 cc motorcycle which I am increasing the displacement to about 350 cc but I have no way of remapping the ECU. Is it possible to get a satisfactory result by changing ...
5
votes
3answers
5k views

How to fix an injector leaking into the manifold?

I suspect I have an EFI common rail injector that fails to hold pressure and slowly leaks petrol into the manifold when the engine is shut down (and possibly while running). I am interested in why ...
6
votes
2answers
177 views

How can vehicles run on E?

Sorry if this topic is too open ended I'm new to this site. I am studying engines and how they work and I keep wondering, how do cars with no gas still manage to run for a few extra miles? If you ...
3
votes
2answers
609 views

What fuel injectors I have to install? [duplicate]

Recently the fuel injectors of my Mazda 3 SP5 2006 2.3L stop working, they still works, but my mechanic said that are in bad conditions. Anyway, when I search the fuel injectors for my car, I found ...
2
votes
2answers
808 views

Difference between fuel injectors and emissions standards

I have a 2004 Honda Accord EX Sedan with a 2.4L I-4 with California emissions and 250k miles on it. I desperately need to replace my fuel injectors but the price is steep! Can someone explain to me ...
6
votes
2answers
4k views

Fault code 27 with engine light on '94 Jeep Cherokee

I own a '94 jeep cherokee 4.0 liter. The 27 code indicates the injector circuit is not syncing with the input signal. How do I trouble shoot this?
9
votes
1answer
409 views

Ford Tractor 5600

This is a older tractor. My question relates to the fuel system. The older fuel injectors don't have any external seals? All of them seat and 3 don't leak but one does. I was looking for a seal but ...
5
votes
2answers
15k views

RPM drop when coming to a stop in neutral, Civic 06

Let's say I'm getting off the freeway, I press the clutch, shift out of 5th to neutral. At that moment my Civic DX would usually drop to about 1000 rpm at idle. For the past month it drops too low, ...
5
votes
2answers
941 views

Do I need to eliminate old gas before changing fuel injectors?

I have a truck with a full tank of gas (12-16 gallons?) that's been sitting for 12 months and I'm about to change the fuel injectors. The truck can barely make it around the block due to stalling out ...
4
votes
3answers
364 views

Are low-impedance fuel injectors just a placebo?

From this Hot Rod article, I understand that low-impedance injectors run higher current and open and close faster than high-impedance equivalents. The heating effect of the higher current also results ...