why does my gas tank have water after being parked for 3 or more days

Asked by Jul 29, 2015 at 02:44 PM about the 2006 Chevrolet Silverado 1500 LS 2WD

Question type: Maintenance & Repair

Hello my gas tank always has water after it is parked for 3 or more days, i recently saw that the gas cap was sweaitng I would like to know what is wrong with it the truck wont run untill i drop the tank and take the gas out and add new gas.

4 Answers

Simple condensation will collect in tank, especially if where you live is humid and has a big difference in the high an low temperatures ..day and night. As in 90° day/60° night. But geez, that much water almost seems like somebody is messing with you, putting water in. Possible...? Maybe...? If you can rule that out, condensation, as stated, will collect but that is too much for ordinary conditions. Best suggestion is fill it up, and keep it full...even if you only drive 50 miles or so, keep it topped off and see what happens then. Also, an OBDII scan wouldn't hurt, CEL lit or not. The EVAP may have an issue.

And clean water or coolant....? Afterthought, going under assumption we are talking just water. But if it's engine coolant, whole 'nother ballgame

26,265

condensation is one thing.. first change fuel filters...union oil some years back had some bad gas sent to some of its dealers...spent 2 months dropping tanks...anyway did yo get a bad batch? buy some of this...http://www.autozone.com/fuel-and-engine-cleaners-additives/fuel- additive-and-cleaner/valvoline-12-oz-water-remover/33412_0_0/

1 of 1 people found this helpful.
49,425

It is likely he has E-10 in it and it got polluted with enough water to phase separate the fuel. Tank needs to be completely drained and fresh gasoline installed. No amount of additive will fix phase separation. Keep the tank at lease half full and don't worry about the condensation unless it is on the inside of the filler neck or tank.

Your Answer

Add photo

Related Questions

  • why does my gas tank have water after being parked for 3 or more days 4 answers

    Hello my gas tank always has water after it is parked for 3 or more days, i recently saw that the gas cap was sweaitng I would like to know what is wrong with it the truck wont run untill i drop the t...

    2006 Chevrolet Silverado 1500 LS 2WD

    -

    Maintenance & Repair

  • Where would water be coming from underneath truck close to gas tank?

    I noticed water dripping off of gas tank underneath the back part of my truck. Where could it be coming from?

    2004 Chevrolet Silverado 1500 LS Crew Cab 2WD

    -

    Maintenance & Repair

  • Why does my truck have a miss and running lean?

    I did a full tune up. Temp sensor changed good valve pressure good fuel pressure. The only thing I did lately was put a throttle body spacer about 3 mouths ago. My truck is a 98 chevy 1500 5.7

    1999 Chevrolet Silverado 1500 3 Dr LS 4WD Extended Cab LB

    -

    Maintenance & Repair

  • why does my truck shut off 3 answers

    why does my chevy 1500 truck shut off when i press the gas or put it in to any gear. Also weni turn left it shuts off.

    Chevrolet Silverado 1500

    -

    Maintenance & Repair

  • Why do I have no responce between the gas peddle and the throttle body? 2 answers

    I replaced my fuel pump due to it rusting out and leaking. Since then it wants to die at idle. I disconnected the throttle sensor during idle and it died. Since then it will start but dies and I rep...

    2004 Chevrolet Silverado 1500 Z71 Short Bed 4WD

    -

    Maintenance & Repair

Silverado 1500

Looking for a Used Silverado 1500 in your area?

CarGurus has 183,630 nationwide Silverado 1500 listings starting at $1,595.

ZIP:

Search Chevrolet Silverado 1500 Questions

Chevrolet Silverado 1500 Experts

#1 John Carson
John Carson
Reputation 2,440
#2 Rowefast
Rowefast
Reputation 1,950
#3 tenspeed
tenspeed
Reputation 1,650
View All

Related Models For Sale

Used GMC Sierra 1500
807 Great Deals out of 68,327 listings starting at $1,300
Used Ford F-150
2,131 Great Deals out of 191,043 listings starting at $290
Used Dodge Ram 1500
410 Great Deals out of 10,896 listings starting at $1,000
Used Chevrolet Silverado 2500HD
309 Great Deals out of 28,847 listings starting at $1,500
Used Toyota Tundra
470 Great Deals out of 34,463 listings starting at $1,950
Used Toyota Tacoma
571 Great Deals out of 42,604 listings starting at $1,995
Used Chevrolet Tahoe
587 Great Deals out of 33,591 listings starting at $1,375
Used Chevrolet Colorado
255 Great Deals out of 28,189 listings starting at $2,000
Used Ford F-250 Super Duty
337 Great Deals out of 43,829 listings starting at $1,450
Used Chevrolet Silverado 2500
9 Great Deals out of 256 listings starting at $3,495
Used Chevrolet Silverado 1500HD
10 Great Deals out of 288 listings starting at $3,995
Used Ford Mustang
723 Great Deals out of 44,327 listings starting at $1,500
Used Nissan Titan
179 Great Deals out of 18,996 listings starting at $3,745

Used Cars For Sale

2017 Chevrolet Silverado 1500 For Sale
286 Great Deals out of 125,130 listings starting at $20,549
2016 Chevrolet Silverado 1500 For Sale
153 Great Deals out of 5,758 listings starting at $17,900
2015 Chevrolet Silverado 1500 For Sale
245 Great Deals out of 8,541 listings starting at $12,950
2014 Chevrolet Silverado 1500 For Sale
269 Great Deals out of 10,367 listings starting at $9,798
2013 Chevrolet Silverado 1500 For Sale
167 Great Deals out of 5,012 listings starting at $7,994

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.