Questions tagged [fuel-system]

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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5
votes
1answer
2k views

Engine starts with carb cleaner

I have a motorcycle that will turn over but not start. When I spray carb cleaner into the carb and crank it the engine fires up. Does this mean that the engine is getting spark but not fuel and that ...
2
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3answers
4k views

Motorcycle misfires

I own a 1990 Suzuki GSXR 750, I, bought the bike about a month ago. The first time I took the bike out for a ride I noticed that when you accelerate hard and the engine is at high revs it feels as if ...
1
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1answer
275 views

2004 honda pilot fuel vent problem…can-not-fill-gas-into-tank

I have the same problem and have disconnected and drained the fuel vent line numerous times, only to have the problem return. Would it be OK to disconnect the vent line from the upper fitting and ...
3
votes
1answer
265 views

Honda 919 (CB 900F) idles low when cold

I've got a Honda 919 for a couple of years now. It is 2006, under 20K miles, always maintained and garage kept. I put around 2K miles per year. This season I've put a fresh gas on it and started it, ...
2
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0answers
486 views

2005 Kia Amanti will turn over perfectly but wont start every time!

When i got the car I knew that it had issues with starting. I cleaned everything around the battery. It has a brand new air filter. Oil just got changed. New(ish) battery which is showing a full ...
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0answers
16 views

How do i find a vacuum leak in an 02 aurora oldsmobile [duplicate]

How can I find a vacuum leak in this car? I can't seek to find a diagram of the vacuum system anywhere.
3
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1answer
3k views

Location of the fuel level sensor?

What is the location of the fuel level sensor on a 2008 Hyundai Santa Fe GLS 2.7L V6? Is there a special tool needed to remove the fuel level assembly from the gas tank? "P0464 code: Fuel level ...
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0answers
112 views

Ran out of fuel while riding, what's worst? [closed]

My bike(duke 390 2013) run out of fuel while I was riding it. It is the first time I'm experiencing this. So I'm a bit afraid about the fuel pump. I heard on diesel engines it could be a real problem, ...
4
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2answers
110 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 ...
2
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2answers
1k views

What are some signs of contaminated fuel?

Some people are talking about a fuel station in my area and saying that they are selling contaminated 98 octane fuel. I have fueled my car up from them with their 98, and I'm a little worried. What ...
5
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2answers
8k views

Will 93 octane fuel burn completely in an 87 octane engine?

This is a little more specific than the "wrong fuel" question: I'm looking for the long term impact of using a higher-octane fuel in an engine designed for lower octane fuel. Not quite diesel in a gas ...
5
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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 ...
6
votes
2answers
3k views

Can “performance” fuel filters actually increase fuel flow?

I was browsing online for a fuel filter and saw many different ones claiming to perform better than the stock fuel filter because it increases fuel flow. Can they actually increase the fuel flow in ...
2
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1answer
118 views

Fitting a MotoGadget V2 Unit on my motorbike

I have an older fuel injected motorbike (Ducati 2003 DS1000 SSie) which I would like to customise. I am planning on fitting a MotoGadget V2 Unit, to simplify the wiring. On this unit, there are in- ...
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0answers
128 views

2015 Buick Encore fuel pump

I have a 2015 Buick Encore with just shy of 26K miles and one of the fuel pumps went out. Is this normal? Should I try to trade car after fixing?
2
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1answer
54 views

No fuel being sprayed

There is no fuel being sprayed to the cylenders. If put a dash of gasoline into intake it will want to start.. Toke out two hoses and there is fuel being pumped in and out. what are things to loook ...
5
votes
3answers
6k views

Cranks, but slow to catch. Dies after starting

Recently my 2007 Mazda6 (2.3L I4) has been taking longer and longer to start in temperatures colder than about 5 F (-15 C). The car usually sits overnight for about 12 hours after I get home from work;...
5
votes
1answer
998 views

How Long does engine take to relearn lean condition is resolved?

My recently bought 2004 Chevy Suburban 1500 is throwing P0171 and P0174 codes. Which indicates lean conditions on both banks. I found the MAF had a busted housing, which let in more air than it ...
-2
votes
1answer
543 views

Intermittent power loss possibly due to dirty fuel

I almost ran out of gas last week, going into the reserve and getting down to the last 2 quarts or so. About 5 days laters I started to experience power loss. The car will lose power and slow down to ...
3
votes
1answer
193 views

Why are there separate Fuel Pressure Regulator and Maximum Fuel Pressure Tests?

There are a few different active fuel pressure tests listed in the 97 Mazda 626 GF Work Shop Manual ( European ). The first two are an idle pressure test ( 30 - 36 psi ) and a fuel pressure regulator ...
2
votes
1answer
1k views

In Tank Fuel Pumps Pros and Cons [closed]

In-tank fuel pumps are common in cars these days. I was first aware of this in 1985 on a Ford Telstar when it was relatively exotic. I have been told that it keeps the electric pump cool and quiet and ...
3
votes
2answers
161 views

Is it OK to use Redex fuel additive in winter?

We're currently in a typical chilly spell here in the UK and I've got a bottle of Redex fuel additive sitting in my cupboard, like this one: http://www.halfords.com/motoring/engine-oils-fluids/fuel-...
4
votes
1answer
1k views

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 ...
2
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0answers
48 views

Loss of current to fuel pump

There is no current coming to the fuel pump in my 1997 toyota corolla. Only the ground wire has current. The other wire does not have current so what is the cause of this lost of current and how can I ...
2
votes
1answer
1k views

What's the risk of not changing out a fuel pressure regulator?

I have a bad fuel pressure regulator. Our car (usually) starts, though occasionally it's a little grumpy about it or it takes a bit of cranking. Changing the regulator takes a while for a Chevy ...
3
votes
1answer
88 views

Fuel Pressure Regulator, or something else wrong in my 1997 Chevy Suburban?

I have a 1997 Chevy Suburban and I'm pretty sure that the fuel pressure regulator valve is going/gone. Or maybe it's just the elevation. We recently had the water pump and the front intake manifold ...
6
votes
1answer
929 views

Fuel Pump Suction Performance

Electric Fuel pumps and mechanical fuel pumps are well specified when it comes to pressure and flow rate .Reputable manufacturers provide a curve of pressure say PSI Vs flowrate say Gallons per hour. ...
5
votes
1answer
254 views

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 ...
2
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1answer
42 views

Alto LX erratic start up behavior

I have been facing a start up problem with my Maruti 800 LX recently. I have changed the distributor, spark plugs and also replaced the battery. Any recommendations?
3
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0answers
18 views

No start on 2002 GMC Savanna 1500

When I try to start it it will not start I was told to push the gas and it doesn't do anything at all. I replaced the alternator and got a new battery. We have been having this problem for over a ...
5
votes
1answer
77 views

Possible clogged injectors?

For the past year, my 2010 Hyundai Tucson has intermittently (1-2 times a month) had "hesitation" problems where pressing the accelerator doesn't increase the RPMs - usually within 2 minutes of ...
3
votes
1answer
884 views

Do fuel pressure regulators allow some fuel to flow even when not turned on?

I'm completely rewriting this question since I really wasn't clear before. When discussing a fuel system with a return line and a vacuum operated fuel pressure regulator such as this: Where it says "...
4
votes
1answer
229 views

Can I replace my TR7 carb mounting rubbers with nylon?

Recently, an air leak introduced itself in my Triumph TR7. After some playing with soap and propane, I found out the leak was from the rubber carburetor (SU HS6) mounting plate. As with many things on ...
4
votes
1answer
382 views

Can't get a fuel pressure reading

I wanted to test out my fuel system components on my 98 Mazda 626 GF 2L, so I hooked up my fuel pressure gauge between the fuel filter and the fuel rail. I've used this gauge on this car before, and ...
8
votes
3answers
4k views

What could be causing fuel pumps to die?

I've got a 1993 Mk1 Golf/Rabbit Cabriolet that I picked up as a project car. When I first got it the lifter pump was dead so I replaced it. About 6 months later, the main pump died and was replaced. ...
6
votes
2answers
8k views

Properly draining a motorcycle carburetor

How does one properly drain a motorcycle carburetor and ensure that no additional fuel drains into the fuel bowl(s)? I opened the two draincocks seen above the choke in the photo below, but even after ...
7
votes
1answer
3k views

Fuel Trim Readings

I have a 2002 Toyota Corolla (1ZZ-FE engine) and I am trying to understand the fuel trim values I am getting in real driving conditions from my scan tool. I have P0171 code (lean condition) that comes ...
3
votes
0answers
452 views

protect gas lines from corrosion?

'07 Cobalt, electric power steering, 50K miles Snow/slush/salt area. The car (new to us) hasn't had a lot of winter miles, so it's in not-too-bad condition. However, underneath today, I saw that ...
1
vote
0answers
206 views

2011 Chevy Malibu ltz gas intake issues with check engine light

The Check Engine Light came on and diagnosis came back. It has to do with the gas tank intake, it does not want to take gas when refilling the tank. It takes some then quits. It take 30 minutes or ...
2
votes
1answer
96 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 ...
2
votes
1answer
206 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 ...
2
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0answers
169 views

Fuel system hose routing - Triumph Bonneville

Can anybody help? I'm putting 2005 Triumph T100 Bonneville back together. I seem to have got confused with the hoses from the carbs and petrol tank and the tip over hose. Anybody know of a drawing ...
3
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2answers
969 views

2005 Dodge Grand Caravan sputters & stalls after refueling

I fill my tank at 3/4 or 1/2 full and every time it sputters and stalls immediately when I leave the pump, just like so many other Dodge & Chrysler minivans I've recently read about. So, before I ...
3
votes
1answer
319 views

1994 Chevrolet S10 2.2L LS pickup - gas smell when starting

Engine has just been rebuilt. Replaced the fuel filter, gas cap, and EGR as well. I can smell gas outside when starting and when shut off. There are no visible gas leaks coming from the gas tank. ...
4
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0answers
216 views

Why does my car stutter and sometimes die at low RPMs, but only when the fuel tank is full?

My 2005 Chevy Malibu has a very strange problem, it sometimes dies at low RPMs, but only when the fuel tank is full. The problem goes away when the tank drops to a little bit above the 3/4 mark. I've ...
4
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0answers
82 views

About Hyundai Atos 1998 1000cc fuel

What is the right octane number of fuel suitable for car Hyundai Atos 1998 1000cc, 80 or 92?
5
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1answer
21k views

Car can't speed more than 100km/h

Last few weeks I get back from my hometown which is 200km in distance. For the 1st hour I travel using federal lane where I only speed less than 90km/h because of traffic and to avoid speed trap. As ...
2
votes
1answer
62 views

Compatible fuel tank 2005 Smart ForFour

I just bought a 2005 Smart ForFour 1.5 CDI (70kw/95hp). Unfortunately the fuel tank is leaking but the previous owner agreed to pay for the repairs. The problem now is that this part is no longer in ...
6
votes
1answer
848 views

How to install a Low Fuel Light and a Seat Belt Light?

I have a FAW V2. In its dashboard (meter), there is a Low Fuel Light and a Seatbelt Light, but they do not light up. While investigating why they weren't lighting up, I discovered that the FAW V2 ...
2
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0answers
44 views

bleed fuel system mercedes 364 engine

Following an engine rebuild, do I need to bleed at the injectors once fuel is at the filter? If so, how is this done?