Questions tagged [fuel-injection]

A method of mixing fuel and air to be consumed by an internal combustion engine.

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1answer
847 views

Suspected suction control valve issue, car also hard to start

I drive a Toyota Corolla with a 1AD-FTV engine. This car has become progressively harder to start over the years. Even at 10°C it might take two tries. It still starts without too much trouble, if you ...
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21 views

2003 Toyota Corolla - Cyl Misfire + Lean Mix after month long storage. Possible causes?

I've not been driving my 2003 Toyota Corolla since we were ordered to shelter. Today, I turned it over and found it rough idling. ECU faults show as follow: which reads: Current Fault: P0303 - ...
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2answers
44 views

Abrupt A/F Sensor Voltage Spikes, STFL, and Lambda Extreme Lean Spikes, Bad Fuel Economy

Mine is a 2013 Nissan Rogue S. I bought it used a month ago and have since been trying to identify the source(s) of its very bad fuel economy, so far to no avail. The car has its own dashboard fuel ...
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4answers
81 views

Beginner bike - carburetor vs fuel injection

I'm looking to purchase a beginner motorcycle/bike. I would like something that has less maintenance / potential for issues. Which one is less likely to be an issue in a bike - carburetor or fuel ...
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1answer
83 views

Do I need injection, throttle body, and upper intake cleaning?

I have a 2014 Toyota Camry with 52k miles. The last 2 times I've gone to the dealership for regular oil change and maintenance checkups, they've tried to get me to do an injection, throttle body, and ...
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1answer
192 views

Replace fuel injector 2013 Ford C-Max Energi (and enter calibration code)

I have a 2013 Ford C-Max Energi (US-California) with about 150kmi, mostly highway commute miles, great shape overall. We get an injector 3 code maybe once every six weeks. We put in a bottle of STP ...
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16 views

Idle goes up and down [duplicate]

I buy my first real motorcycle!It is awesome but on idle rpm goes up and down.It’s scares me because it’s injector motor not chinese.Can i drive with it or thats not nice for engine?Does someone now ...
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7answers
43k views

How exactly does running fuel-lean increase the temperature of ignition?

I learned in this question that running an engine fuel-lean will increase the temperature of ignition, among other things such as causing problems with the catalytic converter. I have no idea how or ...
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32 views

What are best steps to diagnose a bucking engine/

My 1992 Nissan with SR20DE (2.0 liter 143 HP o2 and MAF equipped OBD I engine, 16 valve, fuel injected), bucks. I own this car for ten years now and a lot has been replaced. Not always in attempt to ...
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3answers
11k views

How much fuel does it take to start an engine?

I appreciate this is a question that can't be answered in facts and figures, so I'm after a general idea. I drive a 1986 Supra, which has a modest 2.8-litre engine. I often shut the engine off while ...
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10 views

Fuel Injection Lamp flashing on Honda PS 125

Recently my scooter´s FI lamp has been behaving strangely. At days the lamp stays on even during the ride, sometimes it keeps flashing and some other times it stays off after the initial checks after ...
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32 views

Seeking information on the accuracy of average Fuel Consumption shown in Instrument Console?

If the speed shown in a motorcycle's instrument cluster is off by let's say ~5 km/h relative to the actual speed, can we say that the average fuel consumption it shows is also prone to show wrong ...
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4answers
57k views

Gas pedal not responding

It just doesn't work, as if I weren't even pressing it and it happens regardless of the speed. I have to turn the engine off and on again and it'll work for another 3 or even up to 20 minutes ...
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1answer
46 views

Which model to buy in between TVS Apache RTR 160 4v Carb or FI? [closed]

I am from Lucknow, India. I am planning to buy TVS Apache RTR 160 4v but I am really confused about whether to buy a carburetor version or fuel-injected version of the same. The ex-showroom price of ...
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1answer
13k views

Motorcycle: Fuel Injection light comes on after 5 mins of riding

I've bought a brand new bike and have had it for about 2 months. Later this week I noticed that after about 5 mins of riding the Fuel Injection light comes back on. I stop the bike, turn the ignition ...
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253 views

Sudden rattling during acceleration, check engine light

I am trying to diagnose a problem, that suddenly occurred with my dci 2.0 Nissan Qashqai +2. During acceleration, I heard a strange noise, after which the motor started sounding completely ...
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1answer
276 views

Difference between banks for AFR & O2 sensor values

This is a well maintained 2007 Subaru with 140k km on the 3.0 litre six cylinder EZ30R engine. She's running a little scratchy most noticeable when cruising although no codes or anything. I decided ...
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1answer
47 views

Does anyone know the style of connector used on Ford CFI throttle body injectors?

I am trying to find the part number on a connector for the injectors used on Ford's throttle body injection. This connector is on a Bosch injector made for Ford's CFI throttle body injection used on ...
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1answer
80 views

Will removing the catalytic converter on my Kawasaki Bajaj RS200 require remapping?

I own a 2018 Kawasaki Bajaj Rouser RS200 and would like to remove the catalytic converter but am not sure if that would require remapping. I already replaced the stock muffler with one from Vmax ...
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1answer
1k views

engine bogging at certain rpm

On my fuel injected single cylinder air cooled motorbike, it has started bogging at around 4k, feels like it cuts out for a second or until I twist the throttle a bit more. It happens in every gear ...
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0answers
25 views

Pull start fuel injected motorcycle/car injured or not?

A lot of time I heard from some people that pull start fuel injected motorcycle or car injured engine by shifting the time of engine or confuse EMS(Engine Management System computer) because tires ...
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10answers
23k views

Is Tom Ogle's 100+mpg engine actually feasible? [closed]

I've just read about Tom Ogle, an inventor who claims to have built an fuel injection system that can achieve 100+ mpg and has apparently proven it, before dying in suspicious circumstances. From a ...
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1answer
56 views

Does driving a car economically damage the engine?

I have a Honda Vezel, which is available only in Japan. The closest (very close) equivalent is the 2016 Honda HRV. It has a 1.5 i-VTEC engine (whatever that means) and a CVT gearbox. The shift has ...
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0answers
14 views

High idle in wet conditions

I have a Lexmoto adrenaline and it works fine in the dry most of the time until recently. It starts to idle significantly higher in the rain and on off acceleration when trying to speed up. I have no ...
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0answers
16 views

2003 Dodge ram 1500 4.7 v8

My 03 Dodge ram 1500 is cutting out, won't stay running. I've changed all 8 spark plugs and all 8 coils, I had to replace the breather box and assembly as well because my ex had tried to put a cold ...
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2answers
65 views

1991 Celica unable to start lately

I had some previous trouble with this car, I replaced the fuel pump and alternator as both were no longer operational. Now I am having a bad no start situation (this was also present in the last few ...
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0answers
77 views

Pulsar 220Fi starter crackling sound

So I've a Plusar 220Fi 2007 model. Engine is in perfect as new condition. However sometimes when I press the start button, I huge crackling sounds can be heard (it's like metal balls are ground ...
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1answer
2k views

Thinking of running E85 to clean my Corvette valves, pistons and heads

I'm pretty sure that I have built up carbon deposits in my 1986 corvette convertible with aluminum heads. I get noticeable pinging when hot and accelerating even with 93 octane gas. My plan is to ...
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3answers
711 views

Would restricting air intake reduce fuel consumption?

I own a Yamaha YS125 which is fuel-injected, and a lot of times I am flogging the bike on full throttle, which increases fuel consumption. I was thinking of restricting the air flow intake of the ...
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2answers
331 views

1996 Volvo 960 won't spark or inject

After a customer had destroyed his engine(wrong fuel), the engine was replaced by my colleague with a 2nd hand one from a running car. However, it won't inject or spark when starting. It concerns a ...
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4answers
14k views

Advantages of direct vs sequential fuel injection

I understand that direct injection puts the air/fuel mix into the cylinder body directly vs the intake valve like the sequential does. What are the advantages of doing so? E.g. does it yield a ...
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0answers
2k views

2012 Great Wall v200

I have no idea how to explain this but I'll try my best! So, a few weekends ago, around 4am, I was driving my 2012 Great Wall v200 to work and it was going fine. Then, on Sunday, I went to Blacktown ...
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2answers
4k views

Why is the effect of a bad fuel pump more noticable at higher speeds?

I get that the main effect of a bad fuel pump is that the engine will cut out at higher speeds, and that this is often not easily noticeable until that happens because there are little or no prior ...
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1answer
369 views

2014 Ninja 300 idle/throttle issue

Back Story Recently my bike had an issue twice while riding that the throttle seemed like it was sticking. I'd be accelerating and when I let off the throttle, it would continue to accelerate. It ...
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0answers
906 views

LTFT way too high, O2 seems sane

Issue Car in question is a Renault Clio B 1.2 16V with about 85KKm. I experience two issues: Intermittent starting problems, independent of hot or cold engine. When the problem occurs I need to ...
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9answers
109k views

Strong vibrations when idling even after replacing engine mounts (automatic transmission)

I have a '93 Acura Integra with automatic transmission. Ever since I got it some time ago the car has been vibrating a lot when stopped at a light, for example. The vibration is worse when in gear ...
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0answers
48 views

Kawasaki EX400 2012 cold stalling

I got a efi motocycle that stalls when cold at stop lights. It only happens if 4-5k rpm was reached before pulling the clutch. When it doesn't stall I notice very low rpm. Cold starts are iffy. It ...
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1answer
90 views

Running fuel injector outside the engine

I want to use an arduino I have lying around to make a fuel injectors tester/cleaner. It looks pretty simple, just connect the injector to a battery and the pin that goes to the ECU to a pulse ...
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0answers
93 views

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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3answers
777 views

Ford Fiesta 2001 1.25 Zetec won't start, stumbles/stalls

My grandmother's 2001 (mk4 facelift) Fiesta is underused these days, but I ran it on Saturday without problems. On Monday, presumably after getting fully hot, it stalled out and had to be limped home. ...
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0answers
86 views

Fuel Map and fooling the speed sensor

Sorry, I didn't know what kind of title I could put for this. I have a '97 Subaru Impreza WRX STi and, as a technical project, I would like to remove the potential (haven't checked yet) 180km/h ...
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2answers
74 views

Is common-rail unreliable by nature?

After having a common-rail diesel car with low mileage who broke 4th injector, and one year after the 1st injector, I tend to be suspicious about the system. It features a deposit where fuel is at ...
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1answer
2k views

What is a replacement Fuel Injector for a 1985 Mustang SVO?

I am trying to buy a set of "Brown Top" fuel injectors, which are supposed to have come from a 1985 SVO 2.3 L Turbo. They (obviously) have a brown colored top section and a pintle. I can't see any ...
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2answers
2k views

Is a secondary air injection pump motor necessary?

My check engine light came on and the mechanic said the problem is that the secondary air injection pump motor broke. It's a used car (2004 VW new beetle) with about 150,000 miles on it and the parts ...
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1answer
10k views

Difference between fuel pressure and fuel rail pressure

In OBD PID wiki page, there are 2 PIDs listed: Fuel pressure and Fuel rail pressure. Are both of them the same? Can someone please give an elaborate explanation of it - What exactly are they ...
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7answers
9k views

We have fuel injection, why not air injection?

I'm finishing studying EFI systems, which set me thinking about induction more generally. We inject fuel from a high-pressure common rail for many good reasons. We're capable of making stratified ...
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0answers
52 views

GM Vortec 5.0 CSFI - Failure Symptons

Based upon my research, the CSFI systems used in GM's Vortec engines during the mid to later 90's are problematic. As such, it does not appear uncommon to convert these to MPFI system. I have a 96 ...
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1answer
64 views

How EFI works? How is it connected to the accelerator padel? [closed]

I want to completely understand how EFI works. Moreover, how and in what form it receives the message from the accelerator pedal. I specifically want to learn how it is implemented in Honda sedans ...
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3answers
6k views

Car runs uneven and jerky, but why? (Mazda 626)

I have a Mazda 626 (sedan) -97 and lately its been running uneven and jerky. Have had in in for repairs and changed battery, oil+filter and spark plugs. Still had problems and tried to use a engine ...
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0answers
1k views

Replace fuel rail pressure sensor in 2006 Mercury Mountaineer?

The car is a 2006 Mercury Mountaineer V6, got about 150k miles. The dealership sale rep is telling me my fuel rail pressure sensor is shorting out and needs to be replaced. Apparently, its causing ...