Questions tagged [fuel-injection]

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

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29 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
91 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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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
37 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
68 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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20 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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1answer
48 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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12 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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Problems with starting citreon c4 1.6 16v manual 2005

I have a citroen c4 1.6 16v manual 2005. Car is swinging continuous. Called a mechanic in with a computer to diagnose fault. Said crank sensor. Changed it but still no change. Checked fuses. All in ...
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35 views

Are there any expected problems when I manipulate the air temperature sensor to show a cooler termperature?

I have a modern motorcycle with fuel injection. It runs lean and especially under 4,000 RPM that is annoying because the engine runs rough. It seem this is a well known problem with modern engines ...
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10 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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37 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
1k 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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1answer
50 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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27 views

Car turning over but won't start after driving, but starts again after sitting for a while

I live in relatively cold temeperatures, and after I drove to school one day my car wouldn't start an hour later. It turned over fine so it's not battery, it just wouldn't actually start. Came back ...
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48 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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1answer
351 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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3answers
359 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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1answer
241 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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2answers
254 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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678 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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40 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
69 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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73 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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75 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
57 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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45 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
60 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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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 ...
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3k views

acceleration bog fuel injection

I have an air cooled single cylinder motorcycle with a bogging down(feels like something is pulling back on the bike making it struggle) problem on acceleration. After many many months of having it I ...
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370 views

What is the normal voltage of 5-wire oxygen sensor (lambda probe)?

I have got a 2007 Opel Vectra GTS 2.2 Direct car (which still has a high pressure fuel pump problem, yet to be solved). Petrol, 114 kW, engine Z22YH. After getting an P0130-52 (No Plausibility ...
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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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241 views

Incorrect fuel injectors - How much damage can they do?

I'm considering buying a car (2001 MR-S w/ 2zz-ge swap) that had incorrect injectors installed into 2 of 4 cylinders. Specifically, 260cc injectors were installed instead of the 320cc injectors it ...
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1answer
54 views

Power: carburettor vs fuel injected engines [closed]

I currently own a Honda Wave 125 with a carburettor. I'm considering buying a newer fuel injected Honda Wave 110. What are the power advantages of a fuel injected engine over a carburettor engine? ...
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1k views

What actually affects engine compression ratios?

I always assumed that the less "square" (or more "undersquare") a motorcycle engine was, the higher the compression ratios it can have. But a survey of several bikes -- from cruisers to supersports, ...
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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.
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639 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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2answers
107 views

Slightly low MPG - need help with my checklist

I own a '91 Ford Sierra 2.0 8V SOHC. Fairly simple engine, utilizes a Bosch L-jetronic fuel injection system. (EFI has following components: MAF, MAP, TPS, IAC, narrow-band o2 sensor, TFI module for ...
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No injectior signals and error codes

On a Hyundai Accent CRDI 3 cylinders, there is no signal on the injectors wires during cranking but if the car is forced to start with other methods the injectors will start getting the signal and ...
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3answers
2k views

Toyota Yaris Fuel Saving

I use Toyota Yaris, 2005 Model, 1.3L, automatic shift, gasoline-powered vehicle, at 141.000KM. I go to work totally 30KM by my car on the highway weekdays. On the road my maximum speed is 90KM/H and ...
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2answers
3k views

What would cause differences in spark plug wear on a '97FordRanger?

The mileage on these plugs is unknown, as this is a used vehicle w/o a complete service record. All 3 plugs on the driver side (4,5,6) were almost completely eroded. The 3 on the passenger side (1,2,...
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1k 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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1answer
113 views

Is an injector an injector?

In general terms at least - lately the engines I've been working on are diesels and I've never had to troubleshoot fuel injection problems on gasoline/petrol engines. So, I'm wondering, how many ...
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1answer
94 views

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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1answer
198 views

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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4answers
324 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 ...
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26k views

Best way to repair a rotten fuel line?

I believe the feed line in my fuel system has rotted. If I'm going to cut out the rusted areas and splice a new line in... Is it best to flare a hardline? Is steel the OEM material? How would I ...
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2answers
892 views

Anyone use a custom fuel line repair kit from eBay?

My fuel line has started leaking and needs to be replaced. I saw a YouTube video of someone who used this 96-00 Civic 2dr Coupe Replacement Stainless Steel Fuel Feed Line & Rubber Return from ...
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1answer
1k views

Resonance Chambers on Four Stroke

I've seen some full exhaust system which came with a resonance chamber on header pipe for four-stroke motorcycles, this header is shorter than the original one As you can see the original one has a ...
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1answer
143 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 ...