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

Engine Specific Info and Questions => IDI Engine => Topic started by: turbotor on March 10, 2006, 04:46:41 am

Title: Air bubbles in the inlet fuel line....??
Post by: turbotor on March 10, 2006, 04:46:41 am
When I rev the engine i can see airbubbles in the inlet fuel line from the filter to the pump.....thats not right??

I didnt see this before I made the governour mod....
Title: Air bubbles in the inlet fuel line....??
Post by: regcheeseman on March 10, 2006, 06:38:19 am
pull the white plastic fitting out of the fuel filter, fill the filter with diesel and refit the white plastic fitting.

The bubbles will now clear.  :)
Title: Air bubbles in the inlet fuel line....??
Post by: turbotor on March 10, 2006, 07:07:02 am
Quote from: "regcheeseman"
pull the white plastic fitting out of the fuel filter, fill the filter with diesel and refit the white plastic fitting.

The bubbles will now clear.  :)


Thanx, I will try that! :)
Title: You may need to replace you fuel filter
Post by: Darkness_is_spreading on March 10, 2006, 07:33:14 am
If you have cracked the bottom plastic water drain, or the filter is clogged it may be allowing air into the system, it usually a sign of an old filter. Open it up and have a look see, filters are cheap and easy to replace,

*Don't forget to have a full fuel filter, I mean go throughly over this procedure, or you will ge air lock*
Title: fuel filter
Post by: fatmobile on March 11, 2006, 01:04:52 am
I'm guessing fuel filter is clogged because there are only bubles when you rev it.
 A vacuum gauge or switch attached tot he fuel line would let you know the filter was getting clogged (or if that's the problem) way before this happens.
Title: Air bubbles in the inlet fuel line....??
Post by: turbotor on March 11, 2006, 04:05:04 am
Im going to change the filter anyway, to be sure I think.....maybe the valve on top of it too.
Title: Air bubbles in the inlet fuel line....??
Post by: okron1k on March 22, 2006, 03:45:54 pm
i have seen this problem on my car as well. let me know if the fuel filter change fixed it.
Title: Air bubbles in the inlet fuel line....??
Post by: wyldman on March 22, 2006, 03:57:11 pm
Usually a fuel filter change will do the trick.Also check the line clamps,and make sure they are tight.
Title: Air bubbles in the inlet fuel line....??
Post by: turbotor on March 23, 2006, 02:03:50 am
Yes, changing fuel filter removed the air bubbles!! but I did have a small leak om my pump too.
It made a BIG difference in how car drives!!!! belive me!  :D