VWDiesel.net The IDI, TDI, and mTDI source.

General Information => Troubleshooting => Topic started by: rallydiesel on April 19, 2007, 03:36:10 pm

Title: Injector return lines leaking and plug too - help!
Post by: rallydiesel on April 19, 2007, 03:36:10 pm
I recently removed the injector to do a comp. test. The injector return lines are in pretty sad shape. A couple are barely long enough and really stiff. They are leaking pretty badly.

Anyway, my question is:

Is there supposed to be a rubber cap on one of injector one's return nozzles? Because that is leaking as well. Is there some place to get this cap?
Title: Injector return lines leaking and plug too - help!
Post by: Doug on April 19, 2007, 06:36:37 pm
The last injector in line from the pump has a plug on the low pressure side. If you can't find one make one temporarily from plastic fuel line that you heat to melting then squeeze together with a pair of pliers so that it fuses closed. Cut it off a centimetre from the fused part and stick the open end over the spigot on the injector body.
Title: Injector return lines leaking and plug too - help!
Post by: burn_your_money on April 19, 2007, 09:34:56 pm
Loosen all of the clamps and both ends of all the lines. They should fit well. Tighten the nuts and then the clamps
Title: Injector return lines leaking and plug too - help!
Post by: rallydiesel on April 20, 2007, 09:04:20 am
There is a low pressure side? How do you tell the difference?
Title: Injector return lines leaking and plug too - help!
Post by: burn_your_money on April 20, 2007, 09:06:47 am
I'm pretty sure it's all the same, as long as you have the lines hooked up in a logical order (one after the other) you should be fine
Title: Injector return lines leaking and plug too - help!
Post by: jtanguay on April 20, 2007, 10:34:20 am
the low pressure side is basically the fuel return... even being low pressure, there is still a lot of fuel that flows through it.

high pressure is around 155 bar... don't want to be messing around with that too much!  :wink: