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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2 answers
142 views

How to get started tuning ecus?

Now I plan on building my own vehicle soon , and I wanted to know where can I begin learning how to tune a vehicle’s ecu and the necessary programs required to tune ecus on top of the understanding ...
1 vote
0 answers
222 views

Why does the gas station pump keep shutting off mid-refueling?

This is a similar question to Why does my gas not fill all the way?. I have a 2017 Jeep Grand Cherokee. It seems to depend on the pump I go to, but sometimes I have a lot of trouble getting the pump ...
1 vote
0 answers
373 views

Dodge Ramvan B250 starts after 10-15 seconds crank - where is the fuel?

I have a 1989 Dodge Ram Van B250 TBI 5.2L 318ci engine. It takes about 10-15 seconds of cranking to start the engine. After it gets hot sometimes it never starts. I'm getting afraid of taking it ...
1 vote
1 answer
1k views

Can't remove fuel line connector from fuel pump

I am trying to replace the fuel pump of my Volvo V70 I 2.4 (106kW, 1998, manual), but can't remove the fuel line connector from the pump assembly. The return line seperated easily, but the other one ...
0 votes
0 answers
68 views

Why is the engine sputtering even when there is sufficient fuel?

While kickstarting the motorcycle, the engine starts properly. But after travelling some distance, the engine sputters and turns off even when there is sufficient fuel. Then, after few raises to the ...
1 vote
1 answer
327 views

How to start a 1991 Thomas School Bus that cranks well, but doesn't start

I purchased the above vehicle for conversion and at first it didn't start at all due to starter issues. At this point it cranked, but cranked weakly. So I replaced the starter about a month ago and it ...
0 votes
0 answers
100 views

ok my car will turn over but not crank its 2005 nissan altima 2.5 4 calender we changed crank position sensor spark plugs and coil pack

I have a 2005 model nissan altima 4 cylender2.5. My car will turn over just won't crank we have replaced a crank position sensor changed coil pack and spark plugs it just won't crank checked fuel pump ...
0 votes
0 answers
203 views

2006 Subaru outback won't accelerate

My 2006 Subaru outback has now three times stops accelerating completely but engine runs normal. The check engine light comes on also. A friend thought it had water in fuel line put in dry heet and ...
2 votes
1 answer
243 views

Fuel pump can't pump after few days stopped

I have a 1995 Nissan Sentra with a carburetor and a mechanical fuel pump. After being parked for a couple of days, the car doesn't start because no fuel reaches the carburetor. At most it, will start ...
2 votes
1 answer
19k views

Black water from exhaust, cylinder misfire and rought idle

It is a Skoda Fabia 2006, petrol, 3cylinders 1.2L. Main problem: Rough idle. Misfire at random cylindners. Steam, Water and black carbon from exhaust. (I'm sure it is not normal). Undrivable. ...
2 votes
2 answers
74 views

Fueling vehicle issues

Every time I go to pump gas in 2009 ford mustang. Almost every gallon that pokes in to tank makes the nozzle trigger pop back like if it was full. It is annoying to hold it and still pops back out. ...
0 votes
2 answers
77 views

Fuel hose leak after inactive for a while

Car was sitting for a while (3 months) in severe heat, this pipe cracked due to age, heat and being dry. It works fine but is leaking quite badly. What is the type of piping required here? Would I ...
1 vote
0 answers
189 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 ...
1 vote
0 answers
451 views

Priming fuel system from fuel tank?

Mechanic changed my Focus 2014`s diesel fuel filter, then because he didn't know the correct method to bleed the system, instead he pressurized the fuel tank with compressor. Car ran fine. But the ...
3 votes
1 answer
4k 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 ...
0 votes
1 answer
270 views

Pocket bike issues

I have recently just bought a new pocket bike for very cheap, it came with no warranty. It is a 50cc 2 stroke pull start with no gears or clutch. It worked perfectly when i first got it (a few days ...
1 vote
4 answers
165 views

RV fuel when stored over winter

I've been running regular unleaded gas in my RV, but when it came to winterize, I'm not sure if the gas jockey followed my instructions to fill with premium. Is it safe to start the vehicle if it has ...
0 votes
0 answers
1k views

How can I diagnose\test if I have contaminated fuel?

Following a fuel change my engine cut out after 3 minutes driving however I was able to restart and drive home for 8 miles. The car did drive quietly for those 8 miles. It does start however and it ...
1 vote
1 answer
922 views

What should a normal fuel pressure reading look like?

Some quick background: While idling, my 2007 Ford Focus "revs" at about a 1-second cycle, you can hear the engine subtly go "wroom / wroom / wroom". It has issues with long crank times to start and ...
1 vote
3 answers
314 views

How to deal with watered down fuel?

I asked this question Why did car go quiter and cut out after fuel change? and somebody mentioned in the comments that I may have used watered down gas. This seems plausible and I did think the fuel ...
12 votes
1 answer
90k views

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 ...
7 votes
1 answer
960 views

2015 Honda Mobilio - Car shakes when started

I have a 2015 Honda Mobilio with a manual transmission. I have had this car for 6 months and have not experienced any problems until yesterday morning. When I start my car, the engine shakes badly. ...
7 votes
3 answers
41k views

What is the Fuel Tank Ventilation Valve?

Asking this for a friend. Their mechanic says the fuel tank ventilation valve is broken. What is the fuel tank ventilation valve? What does it do? Is it an important part? If yes, Why? EDIT: In ...
1 vote
2 answers
212 views

2014 Ford Taurus, digital fuel indicator is out of norm, then check engine light came up

My car at a full tank of gas usually have an estimate milage per the fuel indicator of 425 miles. Recently, when I filled up my tank I noticed it went down to 380 miles. Then weeks later my check ...
0 votes
1 answer
24 views

Fuel consumption

Purchased a BMW 730d 5 months ago , disconnected my battery to fix my starter , when i put the battery back the fuel consumption reader goes to zero 0000 , when I started driving the fuel reader ...
3 votes
1 answer
428 views

Cause of faulty EGR valve

I recently had my diesel Range Rover sport serviced but the garage didn’t re-seat the fuel filter correctly causing a leak of fuel. At the same time, my engine light came on and it turned out to be ...
6 votes
5 answers
21k views

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 ...
2 votes
3 answers
37k views

What can cause "check gas cap" warnings other than a loose gas cap?

I have a 2006 Saturn Ion, and a few months ago I started getting a warning about my gas cap. Specifically, as I was driving the dash display would beep and say "Check Gas Cap." I bought a new cap to ...
4 votes
0 answers
271 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 ...
1 vote
0 answers
130 views

Unexplained fuel pump residue that ruined fuel pump

A couple months back I posted a Question about my sisters fuel pump that suddenly stopped working after she walked Inside, The night before she swore that she had a half tank of gas, To make a long ...
7 votes
2 answers
1k views

Power Inverters as Emergency Generators?

After being hit by Hurricane Irene last week, I happened to loose power for literally one week so rather than rely completely on batteries and being a nomad, I used my Cobra 400 watt power inverter (...
5 votes
2 answers
3k views

Any techniques to remove rust from inside fuel tank without removal

Last night I ran through the entire ignition system of my 1985 Mk1 Golf Cabriolet 1.6 (Carb) Auto and managed to get a nice strong healthy spark. This allowed me to start the car on Easy Start ...
2 votes
1 answer
1k views

How to drain the fuel tank on a first gen (2000) SV650?

I’ve got some fuel line (top yellow fuel line in picture) from the petcock to a gas can. I disconnected the vacuum line. I read some cryptic hints about Mity-vacs and opening the throttle but ...
2 votes
1 answer
1k views

Diagnosing a p0420 code for 2005 nissan x-trail 2.5L

I own a 2005 nissan xtrail with a 2.5L engine (QR25DE). I have problems with my vehicle, too much fuel consumption ( 3.8km/L ) My car has a 60Liter tank , my last fuel up gave me 229KM until the ...
2 votes
1 answer
3k views

Does every modern car have an evap vent valve?

My car has all the evap system, canister, and solenoid valve but as I am seeing on internet, people have [a] solenoid valve on their outlet vent on canister too which open and close by ECU to let the ...
2 votes
0 answers
206 views

91 octane misfire but 95 or 98 no misfire

My car has one strange issue which affecting starting and misfire. With 91 octane starting is good but misfire randomly at idle with air con on. With 95 or 98 octane starting is very difficult I ...
3 votes
1 answer
5k 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 ...
1 vote
1 answer
4k views

How to use BG Fuel Injection System Cleaner?

Recently, after a periodic servicing visit for my car (which has a multi point fuel injection system), the mechanic handed me BG Fuel Injection System Cleaner Part No. 210 and asked me to put it in ...
1 vote
2 answers
220 views

Mitsubishi Mirage 1994 shudders with acceleration

My Mirage (1994, 4G13 (carb), ~95,000km) shudders whenever I accelerate. This is largely a recent problem. This generally occurs after ~2min of driving and persists for ~20 minutes. Depressing the ...
3 votes
4 answers
2k views

How much efficiency is robbed from 'pumping loss,' if any?

I'm specifically referring to the loss due to the pistons pulling air through a mostly closed throttle while cruising at highway speeds in a gasoline engine. To give an example, I've always wondered ...
0 votes
1 answer
375 views

Bajaj discover 125(2011model) runs like always giving reserve fuel warning even when fuel is sufficient

I have Bajaj Discover 125 (2011) model which has always been taken care by me. as i dont ride bike much it only ran upto 20,000 km till now in plains. (Punjab). Everything was fine and the bike ...
1 vote
0 answers
369 views

2018 Honda Civic warning lights all on power steering,abs,emissions,uphill contaminated gas?

2018 Honda Civic ex with 2000 miles on it. Abs emissions power steering uphill lights all on the dash. Took it to the dealer and they said it is contaminated gas? Has anyone every had this happen? I ...
1 vote
1 answer
2k views

Why does turning ignition to ON not power the fuel pump?

I am currently testing my fuel system (Toyota, 5VZ) to diagnose a P0171. The Service Manual says this: Connect a TOYOTA hand-held tester to the DLC3 Turn the ignition switch ON and push TOYOTA hand-...
2 votes
1 answer
52 views

Turbo Diesel Smoke from Fuel Filter body

A friend of ours has a 2005 Ford Mondeo 2.0 TDCI which is a common rail turbo diesel. Today, lots of white smoke came from under the bonnet (hood) which appeared to be coming from the fuel filter. ...
1 vote
0 answers
43 views

Exterior gas tank

So I have a 2004 Chevy Silverado 1500 I do a lot of driving and want to put a gas tank in the bed, then tap it into the gas tank under the truck. What would be the best way to do that? Would I have to ...
2 votes
2 answers
140 views

Failed motor mount on 2007 Jetta Wolfsburg edition

7 months ago a motor mount failed on my 2007 VW Jetta Wolfsburg edition. Since then it has sat 7 months. It was running fine the last time it was started. Should I replace all the motor mounts, or ...
3 votes
1 answer
686 views

2012 Mini Roadster S R59 P15DF code

wondering what else I can do to diagnose this. Here's some background and what I did so far: 2 weeks ago I replaced the throttle body. To be able to access it, I had to remove the intake manifold and ...
8 votes
2 answers
6k 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 ...
3 votes
2 answers
5k views

Fuel smells inside the car when at idle

I have a 2002 Honda civic 1.7L. The car started to make a deeper sound and at idles with heat on, it smells fuel inside the car. Not sure if related, I recently went camping, I parked the car on a ...
1 vote
0 answers
37 views

Four cycle engine with oil in gas. What should I do besides new spark plug?

Honda GC160 5.0 emits thick blue smoke. I used it several days when it came to a stop. Filled the tank with fresh (no mix) gas & it would not start. Bought & changed the old spark plug. After ...

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