C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

I have really bad gas.....

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Old 11-14-2016, 04:16 PM
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Default I have really bad gas.....

So, after some time sitting...Ive ordered a lot of new parts, but decided to start on the basics. Gave the car a tune up and filters...it wont stay running.

Long story short after a process of elimination the gasoline coming off of the fuel rail is white...I know its bad fuel, but what makes it white? My guess is water/moisture?

Anyone dealt with this?

Can I pull the F/P assembly and siphon the fuel and clean/dry out the tank while it is still in the car?
Old 11-14-2016, 04:32 PM
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VikingTrad3r
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you can pull the hatch off. then the rubber boot. then the pump. then you can suck it out.

the other thing you can do is pull the filter off, jam some hose on the end of the feed line and then jumper the pump with 12v and allow the pump to do the work for you.
Old 11-14-2016, 04:52 PM
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ddahlgren
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If that bad sounds like tank out and cleaned then flush everything with fresh gas well. E10 can make some very evil slime.
Old 11-14-2016, 05:29 PM
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billschroeder5842
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Originally Posted by VikingTrad3r
the other thing you can do is pull the filter off, jam some hose on the end of the feed line and then jumper the pump with 12v and allow the pump to do the work for you.
Old 11-15-2016, 09:46 AM
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Originally Posted by ddahlgren
E10 can make some very evil slime.
That's exactly what the issue is.

I'm going to pull the pump to inspect the sock. I picked up a hand pump, going to drain it and then go from there.
Old 11-15-2016, 03:03 PM
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Thats not good.
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Old 11-15-2016, 03:05 PM
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So i pumped it out. Some rust in the tank, wiped and cleaned it all the best i could. Fuel pump and sock were gunked up bad. So in went a new pump and sock. Car fired right up and purrs like a kitten....a loud angry kitten....
Old 11-15-2016, 03:08 PM
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Originally Posted by Firevette
Thats not good.
How or where did all that water get in the tank? The E10 gas did not cause that, something allowed all that water in.
Old 11-15-2016, 03:29 PM
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Tom400CFI
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Originally Posted by bjankuski
How or where did all that water get in the tank? The E10 gas did not cause that, something allowed all that water in.
Old 11-15-2016, 03:50 PM
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Indio Monk
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Originally Posted by Tom400CFI
I am dealing with a car that has been sitting for quite some time. I watched a youtube video on a c4 fuel door tank maintenance and it shows how if your drain near the fuel door is clogged how water can get into the tank.

Here is the video, Maybe this is what happened to yours. It talks about it at 23 seconds into the video
Old 11-15-2016, 04:04 PM
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Im not really sure. What is in the water bottle came off the very bottom. The first half gallon was probably like that, the other 14 gallons were just old gas. There was a bolt missing on the filler neck, its always been missing. (I replaced it today) The rubber tray was badly torn as well, allowing rainwater to get in around the neck...soooo?

What was left of my rubber tray bit the bullet on the way out. Where is a good place to find one? Ecklers?

Last edited by Firevette; 11-15-2016 at 04:05 PM.
Old 11-15-2016, 04:24 PM
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A little startup ****.

Now I remember why it has sat so long. I've already spent $500 on it this week. New brake lines should be here by friday.


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