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

22,675

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 out of 1 people think this is helpful.
44,705

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

  • Water pump 3 answers

    I have a 99 silverado and I think the thermostat is sticking but when I went to fill it up with water it is poring str8 through out the bottum??? Is it the pump?

    1999 Chevrolet Silverado 1500 3 Dr LS Extended Cab SB

    -

    Maintenance & Repair

  • 1998 Chevy Silverado misfiring rapidly! Help please! 8 answers

    I was driving my truck the other day and it was running fine and all of a sudden it started running extremely rough and misfiring like crazy. It also started running really rich and also gas is lea...

    1999 Chevrolet Silverado 1500 3 Dr STD 4WD Extended Cab SB

    -

    Maintenance & Repair

  • Engine Shutting off after about 10-20 seconds on 2004 Silverado 1500 60 answers

    Can anyone shed some light on this problem. After driving my 04' Silverado 1500 all day without any problems, after the truck sat in the driveway for a couple of hours, the truck started right up, but...

    2004 Chevrolet Silverado 1500

    -

    Maintenance & Repair

  • 2004 silverado Z71 flashing check engine light 48 answers

    my check engine light has come on and had started blinking just lately. which means engine misfire. after replacing the plugs and wires the truck seems to have a rough idle and still seems to misfire ...

    2004 Chevrolet Silverado 1500 Z71 Crew Cab Short Bed 4WD

    -

    Maintenance & Repair

  • My C10 69 gas gauge doesn't work right, one day is full tank and the next day is like 3/4. Any ideas? 2 answers

    1969 Chevrolet C/K 10

    -

    Maintenance & Repair

Silverado 1500

Looking for a Used Silverado 1500 in your area?

CarGurus has 169,934 nationwide Silverado 1500 listings starting at $1,800.

ZIP:

Search Chevrolet Silverado 1500 Questions

Chevrolet Silverado 1500 Experts

#1 John Carson
John Carson
Reputation 2,140
#2 Rowefast
Rowefast
Reputation 1,800
#3 Silverado_owner_2006
Silverado_owner_2006
Reputation 1,610
View All

Related Models For Sale

Used GMC Sierra 1500
801 Great Deals out of 67,044 listings starting at $1,499
Used Ford F-150
2,258 Great Deals out of 209,448 listings starting at $1,499
Used Dodge Ram 1500
453 Great Deals out of 11,387 listings starting at $700
Used Chevrolet Silverado 2500HD
306 Great Deals out of 27,045 listings starting at $1,250
Used Toyota Tundra
489 Great Deals out of 34,174 listings starting at $3,000
Used Toyota Tacoma
519 Great Deals out of 39,893 listings starting at $1,995
Used Chevrolet Tahoe
584 Great Deals out of 27,619 listings starting at $1,500
Used Chevrolet Colorado
223 Great Deals out of 23,589 listings starting at $1,395
Used Ford F-250 Super Duty
337 Great Deals out of 47,710 listings starting at $1,495
Used Chevrolet Silverado 2500
8 Great Deals out of 295 listings starting at $3,000
Used Chevrolet Silverado 1500HD
12 Great Deals out of 270 listings starting at $3,950
Used Ford Mustang
396 Great Deals out of 47,365 listings starting at $1,999
Used Dodge Charger
294 Great Deals out of 27,423 listings starting at $2,250

Used Cars For Sale

2017 Chevrolet Silverado 1500 For Sale
44 Great Deals out of 116,248 listings starting at $20,542
2016 Chevrolet Silverado 1500 For Sale
131 Great Deals out of 6,047 listings starting at $20,499
2015 Chevrolet Silverado 1500 For Sale
181 Great Deals out of 7,270 listings starting at $15,888
2014 Chevrolet Silverado 1500 For Sale
279 Great Deals out of 10,432 listings starting at $9,988
2013 Chevrolet Silverado 1500 For Sale
153 Great Deals out of 5,112 listings starting at $7,650