Fuel system covers the components of a car responsible for fuel delivery; tanks, pumps, filters, pipes. Questions on carburettors and injection systems have individual tags

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Is it really not advisable to let your fuel tank get low on fuel?

I have frequently heard people blaming engine problems on letting the fuel in the fuel tank get too low, in so doing allowing sediment to be sucked into the fuel pump, which then causes a blockage. I ...
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Is it okay to run aviation fuel (100 low-lead) in a dirt bike?

I'm wondering if it will be okay to run 100 octane low-lead aviation fuel in my 2007 RM250 motocross bike (two-stroke). Half of the people I've asked say yes, while the other half say no. Will it be ...
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What is the “Activated Carbon Cannister”?

Why do I have an "Activated Carbon Cannister" in my unleaded/petrol car? What is it's purpose? How does it work? Do I need to do anything to maintain it? I would like a general answer, but my car ...
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Lada Niva 1700 Carburetor Model

The compression is good and does not burn excessive oil .Fuel consumption has dropped from 8 kilometers per liter to 5.7 kilometers per liter.Same driving cycle same location. What should I look for?
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Should I run my generator dry in preparation for storage?

I think this is on-topic after reading the FAQ, so I figured I'd go ahead and ask. I gave my gas generator its scheduled 3-month interval "workout" last night, and after letting it run for about 30 ...
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Vespa PX 150 Fuel and Carbon issue

I am using Vespa PX 150.It is using Contact Point system. The issue is it is consuming fuel more than average and the plug is full of carbon after approx 50 Km.The engine not start unless I clean the ...
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What happens when you run out of fuel?

My question is specific to diesel or gasoline (petrol) engines. Many people told me that it is very bad to run out of diesel since it can damage the engine and it's difficult to re-engage it ...
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Power loss in truck - triage options?

I've asked at least one question about my specific situation earlier, but at this point, I'm looking for information on how to operate in triage mode, my primary goal is to get my truck working well ...
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2010 dodge ram 1500 reg./E-85

I let my wife put gas in the car and she thought it was E-85. But she put eco-diesel gas (only) 5.00 dollars worth so my guess maybe 2 gallons now my truck smokes a lot and wants to shut off. I bought ...
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Does the tachometer provide any indication of fuel usage?

So, I'm driving along on the highway with the A/C blasting when I notice the price of gas. It makes me think, "what can I do to increase my fuel efficiency?" Some of the tips I've heard have included ...
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Why does my gas not fill all the way?

Same as the title. I have filled twice, different stations, both fill to just over 3/4 and stop. I am not sure if this is the gauge or something with whatever magic tells the pump to stop. Is there ...
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698 views

is there always pressure when taking off the gas cap? Does it relate to a full reading on gas guage?

When I take off the gas cap, there is noise from the tank like pressure is released every time. Is this supposed to happen? Would this also affect the gas gauge reading full all the time?
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Are fuel system cleaners (like Gumout) worth using regularly?

Are fuel system cleaners (like Gumout) worth using regularly?
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How to tune the ECU / fuel trim in a custom-built engine

I have a Gen VI 454 in my Suburban that needs some work. I'm thinking about turning it into a 496 stroker. Once I find a list of mechanical components (crank, cam, pistons, heads... everything) that ...
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What is a safe procedure for replacing a fuel filter on a 2000 Toyota Camry?

I bought this 2000 Toyota Camry from some very nice folks who cannot even spell "maintenance". So I need to replace the fuel filter as no one knows when it was last done. What I would love to know is ...
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Why can't I fill my gas tank in one go?

For the past couple of months, I've been having trouble filling my gas tank. I have a 2003 Hyundai Elantra, which has a 55-liter tank (approximately 14.5 US gallons). When I buy gas, the pump clicks ...
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Why does my engine perform poorly and get bad gas mileage after using fuel injector cleaner?

At the advice of someone at a local auto parts shop, I poured a bottle of fuel injector cleaner into my gas tank. This happened around the same time that I had a brake job done and rotated my tires. ...
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I'm looking to buy a new car and I'm wondering what does more damage on a car: time or miles?

So the title is pretty self explanatory. I'm looking at getting a minivan, and there is a 2011 model with 50k miles, and a 2008 model with like 30k miles. What's better? Is it better to have ...
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Car is sluggish, jerking and idles rough.

I have a VW Polo Classic, 1.6L. Just recently it started to be slightly jerky when in idle and whilst driving. There is also a loss of power, a strong fuel smell, and sounding slightly like a VW ...
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Diesel Engine difficult to start

I have a diesel powered Audi A4 B7 (2006) 2.0TDi (the 170BHP variety) with a manual gearbox, which I've owned for around 18 months. The car has just short of 100k miles and has a full dealer service ...
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Calculate amount of fuel injected

How do I calculate the amount of fuel injected (both gasoline and diesel cars). I want an instantaneous value. http://www.rceng.com/technical.aspx Websites like these ask for 'Desired Crankshaft ...
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Motorcycle with EFI not starting well

I have a 2012 Kawasaki W800. On cold mornings it is difficult to start - it turns over quite a few times before it catches. This is compared to my old carburettor bike which started instantly with the ...
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2000 Celica engine dies or shakes when I pump gas

I have a 2000 Toyota Celica. At first it used to slip gears and then I had a mechanic check it out. He said its a solenoid in the transmission which he changed. The car sputters sometimes when at ...
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1993 Merc 300SE always stalling soon after startup, fuel pressure tests > 50psi

From the moment car starts to the moment engine stalls, which is about 40 - 60 seconds, fuel pressure is always above 50 psi. Can I safely conclude stalling is not caused by fuel system problems? I ...
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Racing Fuel (100 Octane Rating) - Better than Premium?

Earlier today while driving out East on Long Island I stopped to fill my tank with gas, and at the station, all the pumps had the usual Regular, Mid, Premium on one pump, but on the 2nd pump which ...
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How to know how much fuel is left when the light turns on

In general, where can one find information about the quantity of fuel that is left in the vehicle's tank when the warning light turns on? More specifically, in a Suzuki Swift GLX (auto) 2010 model?
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What is this pipe coming out of the petrol tank under the seat

Sorry, this is a newbie question, but what is this pipe coming out from the petrol tank under the seat? The bike is a 1989 Kawasaki ZZR 250:
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Is it even possible to buy gasoline anymore that does not contain ethanol in the US?

I can't remember the last time I went to a gas station and it didn't have a notice that the gas contained some quantity of ethanol. As I understand it, ethanol is harder on my engine than regular ...
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647 views

Does the a gasoline or diesel engine supply fuel at high speeds when not pressing the pedal and more

Let say I directly connect a small engine to my bicycle, and that I'm superman who can overcome any force. Then I start cycling (using my legs...) - the engine starts to rotate, even though I haven't ...
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108 views

What is the difference between “multi port” and “combined port” fuel injection?

I have heard these terms tossed around quite a bit and I understand that fuel injection is needed in order to inject fuel in to the engine (from a fuel rail/injectors?). What is the difference ...
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Switching to a higher octane

This may be a very noob question to ask. But I recently got this car and was used with 92 octane petrol. However, to my negligence I overlooked the user manual which states to include 95 octane ...
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Is there a standard for how much fuel is left in the tank when the meter reads empty?

I know this question is very similar, but I am specifically talking about the fuel gauge and not an indicator light. Almost every car I've owned could run for quite a while with the fuel gauge reading ...
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Engine sputters when turning left corner

In my 1986 Ford F-150 (carbureted) when I go left around a corner, the engine sputters. Feels very similar to running out of gas, but it picks back up once I stop turning. Only happens in a sharp ...
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additech fuel additives - good idea or not?

When you get gas from a Wal-Mart that has a gas station you can pay extra for fuel additives. $14.99 for a "fuel system service", which is supposed to offer "complete fuel system cleaner", $2.99 for ...
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What is seafoam? What does it do? How do you use it?

Mech's seem to get a real rubbery one about Seafoam. Is it just fuel additive, like something similar to Lucas Oil? Do I just pour it into my gas tank as a gas treatment? What will it do/help ...
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Car stalls when braking (VW Mk1 Golf)

I have bought a Mk1 Cabriolet that has been sitting for over a year. I am trying to get it road worthy. So far so good, but I am having an issue with the engine and braking: The engine stalls when I ...
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Motorcycle petcock leaking around bolts to tank

My petcock is leaking I originally thought it was internal do I took it apart inspected all the gaskets and seals and have it a good cleaning after reassembly it was still leaking and after a better ...
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Is it a good idea to top off the gasoline with higher octane fuel in a specific case?

When topping off the gasoline in a vehicle that is rarely driven (100 miles/month), is there any advantage in topping it off with a higher octane gasoline? I've heard stories that the octane of ...
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What causes too much fuel for my Briggs and Stratton engine?

I recently bought a generator that uses a Briggs and Stratton 17hp Vanguard engine. Before purchasing the generator, it had not ran in several years. The fuel was stale and the oil needed to be ...
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Could a faulty fuel level sensor cause a vehicle to stall?

I have a 2007 Hyundai Santa Fe with just over 90,000 KMs and recently the fuel gauge started to fluctuate wildly. I had the sensor's replaced and filled the tank and it only showed half full. So one ...
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No Acceleration, loss of power, backfiring, CEL, stalling

91 Caprice - l am having problems on acceleration, loss of power, backfiring, check engine light, stalling. Had to repair shop three times and they have not fixed it. Is there a scanner that can ...
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Motorcycle dumping coolant from tailpipe

I'm in the process of getting my 1982 Honda Magna back in running condition. I've cleaned out the carb and put in a new battery. It now runs, but dumps a TON of coolant out the tailpipe. Almost a ...
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What could be the reason and solution to a sudden drop in mileage?

Got my Suzuki Swift Diesel serviced two months back, and all of a sudden the mileage dropped from 20kmpl to 12kmpl and that is confusing! After i returned to Service shop, the guy said that there is ...
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Why wasn't my engine getting fuel?

This is a 1975 Ford F-350. It has been sitting idle for 6 months, and is rarely used. Normally, when I try to start it after sitting for a long time, it takes a bit of cranking before it starts. I ...
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1993 Jeep stalls on acceleration, floods, hard to start

My 1993 Jeep Wrangler has about 200,000 miles, in good shape. It usually starts right up, but it's started intermittently flooding, so that I have to crank and crank with the accelerator all the way ...
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Add 2 stroke oil to a 4 stroke petrol engine during burn-in period

I'm planning to get a new petrol (gasoline) car soon. A friend of mine, who worked as a motorbike mechanic when he was young, told me he puts a small quantity (125 ml / 4 oz) of 2 stroke oil in the ...
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2010 Toyota Corolla - pumping gas - the gas pump kicks off constantally

In another forum someone said "Screen down the fillneck may be partialy plugged up with matter." Is this something a neophyte can change or fix himself, or should I take it to an auto shop? How can I ...
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Re: Dry Gas (specifically STP Water Remover)

Well, it's butt cold here in Maine & my car wouldn't start. It has a 1/4 tank of gas & I was unable to add 1/2 bottle of dry gas as it comes out very fast. So despite the directions on the ...
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Fuel rail pressure port size on 1985 Porsche 911

What fitting do I need to attach my pressure gauge (female 1/8" NPT) to the port on the fuel rail? I know the port is metric but I'm not sure of the size.
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2008 Ford Mondeo 2.0 TDCI cranks but won´t start

Ok, so I´m having this problem with a 2008 Ford Mondeo mk4 with a 2.0 TDci engine code AZBA, same one Peugeot uses in other cars such as the 407. Car was having trouble a few days back to start ...