other Cleaning/flushing A Fuel Line?

[bcarey]

What's the best way to clean some rust residue from my fuel line?

 

My gas tank developed a bit of rust on the inside, and some of that fine sediment was clogging my sender unit and fuel line. I've cleaned my sender and refurbished my tank, but I want to clear out the fuel line as well. What's the best way to do this? I was thinking of flushing it with water or Seafoam or something and blasting that out with compressed air. I don't think I have any blockages, but I want to clean out any fine residue before I put everything back together.

 

I've searched on this topic, but I haven't found a direct answer.

 

 

Thanks!

[M3M3]

rubber lines...just replace them.  cheap and easy.

hard lines...use carb parts cleaner.  it comes in gallon cans at autoparts store.  pour in one end of line until it comes out other end.  plug far end.  let it set over night.  flush with several rounds of carb cleaner.  reconnect.

[bcarey]

Replacing the line is probably a good idea! I've read on here that 8mm is the stuff to go with, but about how much new rubber do I need? Also, what does this entail? I've tried to piece it together from other posts--do I run rubber from the trunk to a plastic (or metal?) line that's under the rear seat, and then do the same under the hood?

[TobyB]

Oooh, wait on the carb cleaner on that plastic line- it might not like it.

 

The way I'd do it is to pressurize a pot of gas to something like 10 psi, then 

squirt it through the lines.  Yes, replacing the 8mm rubber line is a good idea

(8mm=5/16, as far as fuel line is concerned)

 

but a flush with clean gas at SPEED (versus pressure) will do a good enough job.

 

I put a filter at the inlet to the carb.  That helps, too.

 

hth

 

t

[M3M3]

Oooh, wait on the carb cleaner on that plastic line- it might not like it.

 

correct!!!!!!

 

i was talking about the hard METAL line under the car.  should have been more clear. 

[bcarey]

Thanks for the clarification -- I probably would have screwed that up!

 

As for the actual procedure, does the rubber run the entire length of the car, or just a few feet from tank to the plastic tube, and then again into the engine compartment? If the latter, where are the connecting points?
 

Thanks!

 

Bjorn

[M3M3]

the latter.  connecting points are obvious once you take out the trunk boards in the back, and look at the firewall right behind the head in the engine compt for the other end.