Disco II breather cleaning

[xengineguy]

Was working on my disco today and I thought I would pass on some of what I found. This disco has been maintained very well. But... when looking at some small oil leaks on the valve covers, I stated to think Why do so many disco leak oil ? First removed the oil filler cap,started the engine then placed my hand over fill tube...To my surprise I found pressure. Not alot but you could feel it push and build slightly with time. Reved the engine a little didnt seem to make a difference. Removed the breather hose from the right valve cover to find the oil seperator completly plugged...Removed the seperator by spraying a small amount of throttle body cleaner into the ****** let it set while,then pulled and wiggled it out of the ******. Cleaned and reinstalled... Left side hose,removed,cleaned
reinstalled(no oil seperator in this side.) Results: No more pressure!!!!! Now I have a small amount of vacuum at the fill tube !!! Easy check for vacuum, place a small sheet of paper over the fill tube with the engine running. The paper will dimple in the center showing the vac. Hope this helps everyone.

 

[joey]

Good info...

 

[basstard440]

Thanks for the info, I must check this asap.

 

[wolf]

very practical test - will try asap; mucho gracias!

 

[tcpfl]

Good one... thanks!

 

[wolf]

Was working on my disco today and I thought I would pass on some of what I found. This disco has been maintained very well. But... when looking at some small oil leaks on the valve covers, I stated to think Why do so many disco leak oil ? First removed the oil filler cap,started the engine then placed my hand over fill tube...To my surprise I found pressure. Not alot but you could feel it push and build slightly with time. Reved the engine a little didnt seem to make a difference. Removed the breather hose from the right valve cover to find the oil seperator completly plugged...Removed the seperator by spraying a small amount of throttle body cleaner into the ****** let it set while,then pulled and wiggled it out of the ******. Cleaned and reinstalled... Left side hose,removed,cleaned
reinstalled(no oil seperator in this side.) Results: No more pressure!!!!! Now I have a small amount of vacuum at the fill tube !!! Easy check for vacuum, place a small sheet of paper over the fill tube with the engine running. The paper will dimple in the center showing the vac. Hope this helps everyone.

Hi;

Finally got at mine - and it was jammed full of crud as well - I put a new one in along with new hoses just to be safe and it is good to go now for vacuum.

Wolf

 

[xengineguy]

breather cleaning

Glad to hear it helped ! Everyone should check,esp if they have peskey oil leaks...
I also enlarged the hole in the plastic fitting that screws into the intake to 3/16" .This is just a test,it didnt seem to affect the idle at all ... Will keep everyone posted. Mike