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How to fix fuel water contamination? How to

How to fix fuel water contamination? How to prevent fuel water contamination?

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You can drain your tank with a siphon pump if the fuel is bad.
You can use a fuel additive like HEET to prevent recurring contamination.

Posted on Mar 16, 2011

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Sounds like a bad head gasket. You need to check cylinder compression with a compression gauge.

Posted on Mar 16, 2011


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How can you tell if you have bad gas in your tank

What are the indications of bad gasoline?


The symptoms of bad gas involve a lean misfire, which creates a P0300 code in newer cars, engine detonation and pinging, sputtering and stalling. These occur because the bad gas fails to keep the fuel system clean and introduces contaminants that can clog fuel filters, fuel pumps and fuel injectors. In addition, bad gas can have an octane rating lower than advertised, leading to the aforementioned detonation and pinging.


Receiving bad gas from a fueling station is more common than the industry admits. The only cure for fixing bad gas is to drain the fuel tank and fill it with fresh gasoline while cleaning the fuel system in the process. Bad gas can be caused by gasoline suppliers not mixing the required amount of additives in the fuel, causing them to be less effective in preventing deposits and causing fuel varnish to form in the fueling system. Sometimes the tanks, whether at the fueling stations tanks or in the vehicle's own fuel tanks, are contaminated with dirt, corrosion and water. Because no filtration system is absolutely perfect, even with the various filters and stringent EPA requirements in place, these contaminants end up inside the car and may damage it. Gasoline that is lower in octane often occurs because either the supplier or the fueling station intentionally sells regular fuel as higher octane, profiting over the difference in price.

Dec 14, 2016 | Cars & Trucks

1 Answer

Is there any known problem/fault with the BT50 (2013) utility getting water in the fuel tank

check the seal at the sender /pipe pick up at the top of the tank
it is a small depression and any water sitting there will leak in
change where you are getting your fuel as water is used to clean out the tankers delivering the fuel and it is possible that contamination is being picked up from the under ground tanks
if it is a diesel, water forms from condensation when the hot diesel fuel is returned to a cold tank
if it is a diesel then to cut down on the moisture , keep the fuel tank as full as possible
use a water separator in the fuel line and use diesel conditioner additive in the tank to prevent a fungus that grows in that environment
for further information discuss the problem with an accredited diesel specialist shop --the best type of water separator and conditioner to use

Jul 11, 2016 | Cars & Trucks

2 Answers

When to change fuel filter on ford five hundred

Every 30,000 miles is the factory recommendation but if you use a good brand of fuel 60,000 is OK in my experience.

Jul 11, 2016 | 2005 Ford Five Hundred

1 Answer

The gauge on my suv marks it was overheating , we measured coolant and measures 240. mecanic replaced headgasket and suv had same symptoms, until the coolant temperature sensor was replaced.

Water boils at 220 degrees. Liquid cooled engines keep the the temp between 175-195degrees. Need to avoid boil over. 240 is boil over. Blown head gasket are very frequent since ethanol added to gasoline. Why? Fuel absorb water now because of ethanol especially if it sit longer than a week or two in your gas tank. The result...blown head gasket from engine fighting against contaminants burning in the cylinder. Prevention: drive more & use a marine grade stabilizer such as Sea-Foam at every fill up. Now you know.

Sep 16, 2015 | 2003 Kia Sorento

1 Answer

Engine choking during ride

Things to check first:
  1. Fuel filter;
  2. Fuel pressure regulator;
  3. Fuel pump;
  4. Ignition system (including ECU)
  5. Quality of fuel (is it contaminated with water or other contaminants?)

May 07, 2015 | Cars & Trucks

1 Answer

Engine light comes on then goes off

Codes generated by the ECM are stored, and can be retrieved.
Generally, though, a light coming on periodically usually means that you have excessive moisture (water) or other contaminants in your fuel. Easy fix: One bottle of fuel system water remover once every six months. (Any brand, does not matter. They all work the same.)

Aug 14, 2014 | 2003 GMC Envoy

1 Answer

Why doesmy ford explorer jerks when i have to accellerate especially going up hill

It may need a major tune-up, but more likely you are experiencing a fuel delivery problem, or have water or other contaminant in your fuel. Replace the fuel filter, then check the operation of the fuel delivery system (including the fuel pressure regulator and the fuel pump itself). If all systems in the vehicle test good, suspect contaminant in the fuel (especially if your vehicle was allowed to sit unused for a period of six months or more), and replace all fuel with new.

Modern gasolines include ethanol, which can cause water vapor to accumulate in your gas tank. Use fuel system water remover twice a year to prevent fuel contamination.

Jul 17, 2014 | 2001 Ford Explorer

1 Answer

Chevy 1990 3.1 6 cylinder EVAP leak

  1. Location
    • The fuel filter is under the vehicle on the driver's side of the car, in the area below the seating area. In front of the fuel tank, the fuel filter is positioned on the chassis of the fuel line.
    • The fuel filter looks like either a polypropylene film canister or a small spool of thread with a thin tube attached at each end. The vehicle component is relatively small in size and is commonly found in a black or silver color.
    • When gasoline transfers from a gas station's fuel tank to the vehicle's gas tank, dirt and water is transferred with the gasoline as well. Dirt can be transferred from dirty tank sprouts, dirty fuel caps or the dispensing funnels, and water can travel through wet dispensing funnels. When this happens, if unprotected, the contaminants clogs the fuel lines, which destroys the engine, with water causing deterioration and rust. To prevent these and other contaminants from reaching the fuel lines, the fuel filter works as a net to screen out dirt and rust particles, allowing only pure gasoline to fuel the Lumina's engine.
    • A fuel filter does not clean itself. Over time, the contaminants will build up within the filter which can cause a barrier from any fuel from reaching the engine. When this happens, remove and clean the fuel filter with a dry wash cloth or issue a replacement as necessary.

Jan 15, 2013 | 1990 Chevrolet Lumina

1 Answer

Fuel contamination

You likely got a load of water contaminated fuel, diesel fuel absorbs water like a sponge. Drain the fuel or add a water absorbing diesel fuel additive available from many parts stores.

Nov 01, 2012 | Cars & Trucks

1 Answer

Replace fuel pumpand moddual on a 2001 jeep wrangler sport 4.0l in side tank assembly

Fuel Pump Removal & Installation To Remove:
The fuel system is under constant pressure, even when the engine is off. This pressure must be released before servicing the fuel pump module.
  1. Drain fuel tank and remove the tank.
  2. Thoroughly wash and clean area around pump module to prevent contaminants from entering tank.
  3. The plastic fuel pump module locknut is threaded onto fuel tank. Install special tool #6856 to fuel pump module locknut and remove locknut. The fuel pump module will spring up when locknut is removed.
  4. Remove the module from fuel tank.
To Install:
Whenever the fuel pump module is serviced, the module gasket must be replaced.
  1. Thoroughly clean locknut threads and mating fuel tank threads. Use a solution of soap and water. Do not use carburetor cleaner to clean threads.
  2. Using new gasket, position fuel pump module into opening in fuel tank.
  3. Apply clean water to locknut threads.
  4. Position locknut over top of fuel pump module.
  5. Rotate module until arrow is pointed toward front of vehicle (12 o'clock position). This step must be done to prevent float/float rod assembly from contacting sides of fuel tank.
  6. Install special tool #6856 to the locknut.
  7. Tighten the locknut to 55 ft-lb (74 Nm).
  8. Rotate fuel filter/fuel pressure regulator until its fitting is pointed to 10 o'clock position.
  9. Install the fuel tank.
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Jul 17, 2010 | 2001 Jeep Wrangler

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