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.
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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 ...
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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 ...
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Volvo 2.0D engine "self-oscillates" after changing timing belt and adjusting fuel-injectors
I recently had the timing belt and water pump changed on my Volvo s40 (2006 2.0D diesel). The mechanic also cleaned and adjusted the injectors. After the service I noticed that att some rpms the ...
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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 ...
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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 ...
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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 ...
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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?
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Do I have a fuel pressure or injector problem Part 2
This is a continuation of my previous fuel pressure / injector question.
So the missing part for my fuel pressure gauge came in and I was able to do a few more tests. The first thing I think is that ...
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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 ...
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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 ...
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Do you need to replace injector seals if they are removed from the intake?
Car is a Audi S5 2008, direct injection, 8 cyl.
I will be removing the intake manifold to clean the intake ports of carbon. In the process, the fuel rail needs to be removed. The injectors aren't ...
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Do I have a fuel pressure or injector problem, or am I just chasing ghosts?
I just did a fuel volume test on my 98 Mazda 626 2L GF. According Tim Giles book Automotive Service:
Each injector is energized for 15 seconds... Variations of more than 5 ml calls for replacement ...
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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 ...
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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 ...
user11915
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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, ...
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Calculating fuel flow rate through obd || sensor not supporting 015E and 0110 commands
I have been working on a project where i want to calulate fuel flow rate using data from the obd2 sensor. The car on which i was testing didn't support the pid 015E which is for fuel flow rate. Then i ...
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What does a good injector spray pattern look like for a four hole injector?
I have four hole injectors like this on my 98 Mazda 626 2L GF:
What does the proper spray pattern for this type of injector look like?
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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 ...
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Why is my car hard to start only after a few hours?
Car: Audi S5 V8 FSI, Direct Injection
I posted a question related to this but might not be the correct issue: Do injectors leak or injector seals leak?
Background
2 months ago (1200 km) I performed ...
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Do injectors leak or injector seals leak?
Car: Audi S5 2008
I have a problem in my car where sometimes my car will be hard to start after driven for a while. Normally if I floor it close to where I stop the car, it's harder to start. When I ...
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Confirming Head Gasket Only Culprit
Model: Mercedes Vito 638 108 CDI, 2.2L, 1999
Mileage: 270,000 Km.
My exact question is: Does my head gasket need to be replaced (is this the source of my problem), and is this the ONLY problem ...
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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 ...
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Why are my injectors different colors when they all have the same flow rate?
As can clearly be seen in the picture, the injectors on my 98 Mazda 626 2L GF are different colors:
This is even mentioned in the official Workshop Service Manual:
However, both according to the ...
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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 ...
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Rebuilding EV1 Injectors
I recently bought the parts to rebuild EV1 (34.6# @ 43.5psi) injectors. The parts include the microfilter, flat support disk (for the injector end), and the supporting top cover (for the fuel rail end)...
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Is 12 volts safe for testing injectors?
I'd like to do a volume test on my injectors, and was thinking that I would activate each one by jumpering it to the battery ( about 15 seconds per injector. ) The thing is that if I understand ...
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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 ...
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No voltage on injector lines following engine rebuild
I have a 2012 Ford Fiesta 1.4 L TDCi.
It was starting normally but the engine had major mechanical problems so I have rebuilt it and put it back in without touching any electrical part. Now I'm ...
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Diesel Injector Well full of Carbon
While looking over my friend's 08 Kia Carnival J3 2.9L Turbo Diesel, I noticed a strange huffing noise. After removing the decorative engine cover I discovered this:
This injector well is filled ...
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Why Ride by wire when the fuel injector is there
I feel confused on understanding this system on
1. The difference between FI and Ride by Wire
2. how it improves the fuel efficiency when compared to the ride by wire system and conventional ...
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Best practice for replacing fuel injector o-ring?
Never worked on fuel side o a car so have a few concerns:
What's best way to relieve fuel pressure?
After swapping o-rings, does a lubricant need to be added to the o-ring to prevent damage when ...
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Why doesn't polarity matter for fuel injectors?
Why doesn't polarity matter for fuel injectors? If they are essentially a solenoid, then it seems it would matter; swapping polarity would change the direction the electromagnet pulls or pushes.
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2016 Subaru Forester - gas and oil - aftermath of a long roadtrip
Before heading out on a 2+ week, 5000 road trip, I brought my 2016 Forester (50k miles at the time) in for new brakes, an oil change and an inspection for anything else that might need to be looked at....
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Leaking fuel injectors on Buick 3800 SFI engine
My 1993 Buick LeSabre 3800 seems to have one or more leaky fuel injectors. During idle, especially when fully warmed up, it idles chuggy, like extra rich or flooding. If I shut it off during idle, it ...
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Do petrol injectors need to be coded after replacing?
I have replaced petrol injectors on my Insignia A16XER with probably new one from China, but now car is not stable at idle and randomly increase revs.
I am not sure if new one are defective or they ...
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How Carburetor/FI will handle fuel supply in high inclination angle
Lets consider, we are going in inclination. (ex:some where > x Degrees).
At this time, how carburetor will pump the fuel into the cylinder. Since of high inclination, it is very difficult for the ...
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How Long to Power the Injectors for a Fuel Pump Volume Test?
I want to do a fuel pump volume test on my 98 Mazda 62 2L GF, but the WSM doesn't say how long to energize the injectors:
I'll probably activate the injector by back probing the injector ground wire ...
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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 ...
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Diesel leak by fuel injector on Volvo V50 2007
So for a time now there has been diesel undeneath the fuel injectors. Could this be a simple o-ring seal gone rogue? Or a destroyed copper washer?
There seems to be a little puddle of diesel by ...
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Injector leaking/seeping clean diesel over nut/body
I've got a 2005 Mazda 3 (ford inside), engine DLD-416/DV6/MZ-CD 1.6 Diesel, 109 PS. When I was blanking the EGR valve I saw some diesel surrounding the injector bases on all the four injectors. The ...
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injectors: CA and Fed types not interchangeable?
'07 Cobalt, 2.2L Ecotec; CA emissions spec (RPO L61)
I inadvertently tried to install a Fed-emissions spec injector in our CA-emissions engine. AFAICT, it would not seat properly in the intake ...
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Engine shaking at low rpms and injector correction values all over the place
My neighbor has a 2010 Peugeot Partner II turbo diesel ( Same engine as the Citroen Burlingo ) he's been having problems with.
Background: Car was idling poorly, smoking, sputtering and had no power. ...
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1999 Chevy Suburban 5.7 - What is "Valid Reference Pulse"
Searching google for that exact text in quotes (what the scanner shows) yields basically no results. What does it refer to?
For some context that lead to this question, I'm not getting my injectors ...
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Volvo V50 felt like it was stalling while accelerating then engine stopped
So I bought a Volvo V50 about half a year ago and have been having some issues with it lately.
The one problem that has been recurring is that often the engine has very little power. By little power ...
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Help maintenance & repair
06 Pontiac g6 will not start! I recently changed fuel pump. I am getting fuel to the fuel rail with pressure but fuel injectors are not opening. I can pour gas in the breather and it will start until ...
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USA vs Europe fuel injector differences?
This question is out of curiosity as I didn't find any specs or datasheets after plenty searching. What would the differences in the fuel injector be for Europe vs USA markets? I've compared ...
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Car keeps breaking fuel injectors?
Ok so i'm having quiet a strange issues with one of my cars (08 X5 E70 4.8L V8) that may be worth discussing. It seems to keep "blowing" through injectors on only one bank.
Suddenly i noticed CEL and ...
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Leaking fuel injector
If the body of a fuel injector is leaking (allegedly) and flooding a spark plug, there is any chance of fixing it cleaning the injectors or do I have to replace it 100%?
How can I determine which ...
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07 Camry Engine slow RPM and excessive fuel consumption reading
I have 2007 Camry manual made in Australia for Arabic gulf. The engine sometimes go to 500 rpm and suddenly stops. Or it also goes to 1500 rpm and doesn't return to 1000 rpm (which is the normal as ...
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Looking for Fuel Injectors for a Renault Clio Expression 1.5 cdi 2006 plate
I am looking at buying a set of fuel injectors for my car but not sure of what part number I can use.
Equally can you buy a manual for car parts?
Any help would be appreciated.
Thanks in advance.
