Difficult to get rid of vacuum leak and cooler temp compression.

[Leah and David Mueller]

Two of the vacuum connections on the ISV on my 86 4kq do not seal tight yet
despite my attempts to do so.  The idle is a little rough and when I spray
some WD 40 on either one, the idle increases slightly and evens out for a
moment.  Any tricks to sealing these better?  I have tightened the hose
clamps on both to no avail.

Also I did a quick check of plugs and compression. The plugs are tan to
brown color.  The engine was not hot but did a compression test.  At cool
temperature the compression was 120, 122, 130, 115  and 135.  Putting some
oil in the 115 cylinder brought it up to 150  Perhaps I should do a
operating temp test but is the engine still ok or should I be looking to a
ring and valve job.  The oil consumption is getting up to a litre every 2 -
3 fills at the pump.

Thanks

David