Will there be Rust in my Gas tank/fuel lines?

[Gooberlog]

I bought my '90 AWD tsi from my friend. Right now it is in the shop having the motor rebuilt.The motor is done but now they just need to put everything back in, radiator, alternator, etc. The car has been at the shop for over a year now with a blown engine and before that it sat outside for months. The car probobaly spent close to a year outside with the Cylinder head off of the block and the fuel lines exposed to the enviornment under the hood. The hood was always closed, but my question is, could there be rust in my gas tank or fule lines if the lines were disconected by the fuel rail with the hood of the car closed? Would the fuel filter protect water from making its way from my fuel lines backwards into my tank? Also what should i do to remove the gas that's been in the tank for a year+ and would that damage my fuel lines? When it's time to start the car with the rebuilt motor what precautions should i take as far as my fuel. Stock fuel sytem. Thanks alot guys.
Gooberlog

 

[ImBoostedRu]

I would for sure flush out the system since the gas that is in the tank will bw no good any way. This will remove all of the rust if there is any. Also, I would for sure get a new fuel filter and probably a new strainer.

 

[DSM91]

I put a JDM engine in my friend's GSX last winter that had apparently been sitting either in Japan or in a warehouse in the United States for a long time. The coolant passages were coated in thick nasty rust, and some of the metal (water pipes, water pump), was starting to corrode. I scraped as much out as I could and flushed the system until the water came out clear. It has been running great for over a year since then.

I also installed a fuel tank from a parts car that sat for 3 years with the fuel lines open to the atmosphere in the same GSX. The tank had no rust and worked perfectly. Just make sure to clean what needs to be cleaned and replace any bad parts.

 

[Gooberlog]

I will definately replace the fuel filter. How should i remove the fuel that's in the tank now? As far as inspecting the tank for rust, should i just remove the pump and look down in the tank with a flashligh? As far as flushing the lines or checking them for interior rust, what can i do? Thanks alot ahead of time i'm really concerd about the fuel issue, since this car has sat for some time now.

 

[ImBoostedRu]

I would go all the way and drop the tank. That way you can be sure you get out all the nasty gas and you can clean it out. For checking the fuel lines i would just blow through them with air, if when you are blowing them out rust comes out with the gas there is rust in the lines. If there is any rust i would replace them just to be on the safe side. New -06AN line only cost $150 if you need it anyway. Well if you need any more help PM me or email me.

 

[DSM91]

You don't need to drop the tank. It isn't that big a deal. Just get a little hand pump and pump it out. I did this a few weeks ago. Just change the fuel filter and probably the filter on the pump itself.

 

[Gooberlog]

I read today in a '92-94 Mitsubishi shop maunal at work that those years {awd} have a drainplug on the gas tank. Does anyne know of this. I've never heard of a gas tank drain plug? Anyone with a '90 seen theres'? The only reason i'm trying to take the easiest steps as possible is because i have to pay the mechanic at the shop to do what ever work to get it running and A. i don't want that nasty stuff going in my engine and B. He'll prob charge me to pull the tank and inspect the fuel lines. But i don't think that he'd charge me to drain the tank if it's just a drain plug. Thanks again guys you were very helpful. I just hope i'm not over reacting.

 

[Todd95TSi]

What is involved in changing the filter on the pump?

(This post is for an older coworker of mine who has a 1g N/T 2.0)

 

[DSM91]

Yes there is one. I believe it's a 24mm.

 

[DrZiplok]

Originally posted by Todd95TSi
What is involved in changing the filter on the pump?

(This post is for an older coworker of mine who has a 1g N/T 2.0)

Remove the pump. Carefully detach the strainer (not really a filter) and avoid losing the clip.

Typically the strainer just saves you from large pieces of gunk (paint flakes, sticks, that sort of thing) that might fall into the tank. Unless the tank's been open to the weather or *heavily* polluted, you probably won't need to replace it.

Most upgrade pump kits come with new strainers.

 

[Todd95TSi]

Thanks for the info, I will relay this info onto him!

 

[Gooberlog]

Yeah thanks for the input i think that this will help. I'll have to go to the shop and ask him to drain the tank for me, should i cycle some 93 octane through the tank. " put some in and then drain it"?
thanks