air and fuel lines

**third_shift|studios** · 03-07-2009, 03:24 PM

Part 1: Air lines...this is a continuation from an older thread. I had noticed a broken air line (A) and it never threw a code, so i followed the line (B first pic to B second pic) and put a cap on it at that joice-is that ok?

Part 2: i'm trying to attach 6AN braided line to the main hard fuel line(A)-but i don't know what i need to do it. Also-is it true that the Evap line (B) can be capped off b/c it's only for emissions? There is currently fuel in that line, is it ok to cap it where it is?

**Cutlass** · 03-07-2009, 05:29 PM

I believe you did part 1 correctly.
Part 2 however looks like the fuel return line, not the evap purge line. Especially since it has fuel in it.

**third_shift|studios** · 03-07-2009, 05:41 PM

Originally Posted by Cutlass

I believe you did part 1 correctly.
Part 2 however looks like the fuel return line, not the evap purge line. Especially since it has fuel in it.

the car is a 2000...is it possible i had 2 fuel lines? Line B DID have an evap regulator cap on it for sure.

**pajeff02** · 03-07-2009, 05:59 PM

Part 1 is your secondary air injection system. After startup, the electric air pump in front of your left front tire pushes air into the exhaust manifolds through the air valve. The line "A" is the vacuum supply to the air valve from the electric solenoid. Surprised it hasn't thrown a code.

**third_shift|studios** · 03-07-2009, 06:40 PM

Cool, so Part 1 is safe-anyone have any thoughts on part 2?

**JoshieDoom** · 03-08-2009, 03:06 AM

Those lines need to be kept. 1 of them is the fuel return line and I think the other is a vent to the charcoal box. I would keep them if you ever plan on driving it on the street. Might have fuel issues otherwise

**Cutlass** · 03-08-2009, 06:03 AM

Ok I just went and looked at mine. TSS you are correct. B in photo 2 is the evap purge line. You should be able to plug it but it might throw a SES light for a EVAP purge solenoid problem.

**third_shift|studios** · 03-08-2009, 11:43 AM

Originally Posted by JoshieDoom

Those lines need to be kept. 1 of them is the fuel return line and I think the other is a vent to the charcoal box. I would keep them if you ever plan on driving it on the street. Might have fuel issues otherwise

Originally Posted by Cutlass

Ok I just went and looked at mine. TSS you are correct. B in photo 2 is the evap purge line. You should be able to plug it but it might throw a SES light for a EVAP purge solenoid problem.

conflicting info

cutlass, are you talking about "issue 1, photo 2" or "issue 2?"

**Cutlass** · 03-08-2009, 01:19 PM

oops my bad issue 2 which is actually photo 3. B in photo 3 is the evap purge line. You should be able to plug it but it might throw a SES light for a EVAP purge solenoid problem.

**third_shift|studios** · 03-09-2009, 04:50 AM

Originally Posted by Cutlass

oops my bad issue 2 which is actually photo 3. B in photo 3 is the evap purge line. You should be able to plug it but it might throw a SES light for a EVAP purge solenoid problem.

THanks for clearifying. I was told that by an Ls1 mechanic too so I'm hoping the code is all that needs done.

**shady milkman** · 03-09-2009, 07:01 AM

id keep the evap because it helps regulate fuel tank pressure ..it would be a good thing to keep around since increase pressure = increase heat...it doesnt rob power or anything so i would keep it..piece of mind really

**JoshieDoom** · 03-09-2009, 09:39 AM

Originally Posted by shady milkman

id keep the evap because it helps regulate fuel tank pressure ..it would be a good thing to keep around since increase pressure = increase heat...it doesnt rob power or anything so i would keep it..piece of mind really

Yep. Evap is usually kept unless your running a fuel cell.

**third_shift|studios** · 03-09-2009, 11:08 AM

ok thanks guys! more or less worried b/c i'm running braided lines all over the engine now and was hoping i could cut some corners. thnks!

**shady milkman** · 03-09-2009, 11:37 AM

Originally Posted by third_shift|studios

ok thanks guys! more or less worried b/c i'm running braided lines all over the engine now and was hoping i could cut some corners. thnks!

cutting corners...you bastard

**third_shift|studios** · 03-09-2009, 11:52 AM

Originally Posted by shady milkman

cutting corners...you bastard

considering each line costs about $20 to run, yes i am

**shady milkman** · 03-09-2009, 12:02 PM

Originally Posted by third_shift|studios

considering each line costs about $20 to run, yes i am

you know it costs to play

**third_shift|studios** · 03-09-2009, 06:09 PM

Originally Posted by shady milkman

you know it costs to play

since when did you graduate Mod School and become the professor?

**shady milkman** · 03-09-2009, 06:10 PM

Originally Posted by third_shift|studios

since when did you graduate Mod School and become the professor?

since i realized that cutting corners will come back to haunt you

**shady milkman** · 03-09-2009, 06:21 PM

i am not giving you a hard time jaison..i was just saying ..

**third_shift|studios** · 03-10-2009, 04:53 AM

Originally Posted by shady milkman

i am not giving you a hard time jaison..i was just saying ..

it's cool man! I mean, only what, 5/6 months ago you were still asking "how should i mod my car" then in the last 7 days you post all kinda techy shit, what with that PM and all too! Good for you