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RE: 84kq vacuum hose problem?
>The vacuum hose on my 4kq is collapsing on idle. It is the hose that goes
>from
>the intake manifold center left, looking back, and then connect to the
>idle regulator? I think. Off idle it looks normal and the car runs fine.
>I have an 86 Coupe with the same setup and the hose does not collapse.
>Could
>this be due to the older hose weakening or is this inherent to another
>problem. I have traced out all the vacuum lines and cleaned up some of
>the older ends so it all seem tight.
>Any thoughts.
Yep. Not an uncommon problem on older hoses there. Mine split
there after I fixed it so I had to tape it to fix it but here is the fix
for collapsing. Its a 2-part thing.
1) On the part of the Y that goes to the Idle Stabilizer Valve
take a piece of Copper tubing that is a good TIGHT fit and with lost of
WD-40 shove it down into the hose to support it from the inside. I found
a 1" section of connector pipe (to connect two sections of plumbing
together) and I found this to the correct size. Just make sure you dont
cover up the little hole that the Small plastic vacuum hose goes in to.
This takes care of one side of this hose. Now time for the other
Big end.
2) Get a Hose Clamp. Wrap some Electrical Tape around hose to
protect it and then put on hose clamp and tighten just snugly to add
rigidity to hose.
There problem fixed. Now your are on the road for only about $2.
Good Luck.
Todd Phenneger
1984 4000s quattro / modified/ awaiting Turbo Transplant.
1985 4000 quattro / Silver / Fixing it Up.
1987 4000cs quattro / Saphire Metallic Blue/ Girlfriend's
1996 A6q / Volcano / Dads Car
*****1985 5kt / PARTING OUT!