Helping a friend out today with a brand X [chevy s10] that he is going to sell because he hasn't drove it in a year. It was running rough and had a CEL with code P0300. I put the scanner on it and showed misfires #1 and #4 and the LTFT was around 9% so I decided to pull the fuel filter first. When the fuel was running out of the disconnected filter I noticed as the gas was evaporating the beaded spots in the picture were still on the garage floor. My question is does this look like water in the gas or is this a seperation of 1 year old gas?

 

The gas was a year old?? That would do it - Is the 300 code multiple misfires on that truck? Gas doesn't bead torkum .. I 've never seen it bead , not even on wax..

 

I would try draining most of the gas out of the tank and put some fresh gas in...also you could try adding some Heet water remover to your gas.

 

Yea, I've never seen that before either. I'm thinking we may have to drop the tank and drain the gas out but its at a 1/4 tank and hoping that some additive like Bvette85 suggested with a fresh tank of Premium will fix it.

 

I don't know about using premium - it burns slower than 87, the motor has to be tuned for premium regardless..Just fresh gas will straighten things out most likely.

A little info on that - https://www.f150online.com/forums/sh...d.php?t=309500

Also , google it and theres ton's of info on that out there..

 

pour alot of WD 40 in the tank. and fill it up with fresh gas. it will burn it all out of there

 

WD-40 in a gas tank? I dunno if I would do that, i know the miltary developed the stuff for DISPLACING water not removing or absorbing it.

 

Water is heavier then gas...so if there is water in the tank it will most likely sink to the bottom....What I would do is dump in a bottle of heat and let it sit for a while then go fill up with regular gas and hopfully it will run like new

 

You are better off with industrial grade isopropyl alcohol. Heet is a costly way to do it, you need more than one bottle.

 

id just drop the tank and start over. water in engine=bad. i also know that some people had the same prob because some Cheap gas stations the gas they have is 5% water to make it heavy and sell for more....dont buy from cheap places!!!

 

yet another person that has no idea of what the heck they are talking about

 

5% water in a fill-up would be a real quick way to wreak havoc in anything from a weedwacker to a semi. Water is more dense than gas, it sinks to the bottom of the tank, and is usually the first thing sucked up by the pump.

I didn't realize I paid for gas by weight either, I thought I paid by the gallon but I could be mistaken.

That said, I have gotten enough water out of the pump on rare occasion to cause my sled to drop a cylinder, and my p.o.s 3L MerCruiser to not even start(LOVE those GM engines, though the 2.5L ones that Ford made for OMC were even worse with a belt-driven OHC). I used to get gas from a local convenience store chain (stewarts), but I've gotten fuel-related issues a few too many times.

High-concentration isopropyl alcohol works fine, and is a lot cheaper that the off-the-shelf drygas stuff. If you look on something like heet it will say something like 95% isopropyl, with 5% being BS additives. You can pick a bottle up at the local drugstore for like $0.65, it's way cheap.

 

a gallon weghts 8 lbs there guys . my friend worked at a dealer and said they had about 9 cars a week come in for water in the gas prob. so they add more water to the gas so they can sell more of it just another reason not to by the cheapest.

 

Are you listening to yourself?

One gallon of water weighs about 8.34 pounds at room temperature.

One gallon of gas weighs about 6.15 pounds at room temperature.

Denser things sink in the presence of lighter things. It's why boats float, and trucks do not. Gas and water are also heterogeneous substances, being water is polar covalent, and petroleum products in general are non-polar covalent. They don't bond and thus separate into layers.

So by your logic that stations add 5% water to sell more gas. So in a typical 20,000 gallon tank at a gas station, the first 1,000 gallons out of the pump would be pure water. Doesn't seem like a way to sell more gas to me.