How often should you change fuel lines? I'm going in to service injectors and change out FPD. Should I change fuel lines also?

 

I would while you are there. Mazda sells a fuel recall kit that will get about 80% of the fuel system redone (not including dampener or regulator).

 

Thanks for the quick reply! I might go ahead and do it...just out of curiosity...should the fuel lines be changed out on any kind of schedule, or is it one of those "when it goes out" repairs?

 

I think that's one of those judgement calls which is different for everyone. If you have say 70k+ miles on them, and you are working in the area; I would say to change them.

But if you have 20k miles on them and you are working in the area; I would say leave them.

 

generally they will last around 100,000 miles before they tend to crack and seep fuel but conditions vary so there is no real schedule for replacing them. generally i just look things over on a regular basis and replace things that are questionable however while you have the upper end of the engine apart it is a good idea to replace all of the small things like fuel, cooland and vacuum lines.

 

Oh, yeah...already have the hose kit on order. Figured I needed to replace those when I found a hose that got so brittle that it just snapped...and hanging in the air, don't know where the other end is.

 

Its cheap insurance. I replaced mine when I did my PFD and vacuum lines. The fuel line recall kit from Malloy was ~70 dollars, and it came with every line, plus new vacuum lines (rubber) to parts of the car where you had to cut them off to get to the fuel system (didnt use them because I had the silicone kit).