Oil leaks.

The old Rover is leaking a lot of oil. Crankcase is pressurized beyond what the breather system can handle. It's done a lot of miles so just
assumed worn rings, and was intending doing a full overhaul. But money is tight, so that will have to wait a while.
Someone said they'd had the same with head gasket problems. But it still runs as well as ever. If it were a head gasket, I could afford to change them.
Any tests to show definitively if it is a gasket problem or just worn rings? I did do a cranking compression test some time ago which was normal. As you'd expect if it runs well.
--
*If God dropped acid, would he see people?

Dave Plowman snipped-for-privacy@davenoise.co.uk London SW
  Click to see the full signature.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
On 14/06/2018 14:39, Dave Plowman (News) wrote:

A leak down test will help. Pressurise each cylinder (valves closed and crank locked), and see whether any cylinder is leaking more rapidly than the others, if it is significant you can hear whether it is leaking into the crankcase. Head gasket will generally manifest with overheat/water loss and may be detected with a gas test of the air above the coolant, using a 'block test' kit (both are cheap from ebay, you need compressed air for the leak down test)
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
On 14-Jun-18 5:06 PM, MrCheerful wrote:

If you don't have the 2nd pressure gauge and restrictor to make a leak down tester then just pressurizing each cylinder in turn to about 100psi and looking for bubbles or rise in the coolant tank level with pressure cap off will show a gasket leak.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
On 14/06/2018 19:29, Peter Hill wrote:

and you may hear ring leakage by listening at the oil cap.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

Looked on Ebay for leak down testers, and didn't realise how cheap they were.
How much air do you need? In other words, does it need a full sized compressor?
--
*'Progress' and 'Change' are not synonyms.

Dave Plowman snipped-for-privacy@davenoise.co.uk London SW
  Click to see the full signature.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
On 14/06/2018 23:52, Dave Plowman (News) wrote:

a small one would be fine
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

Good - that's all I have. Been Googling on using one and looks like it might well identify the problem. Have ordered one from Ebay.
Just a question - doesn't the air pressure tend to push the piston down? Or do you have to set that piston at its TDC?
--
*Eschew obfuscation *

Dave Plowman snipped-for-privacy@davenoise.co.uk London SW
  Click to see the full signature.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
On 15/06/2018 10:05, Dave Plowman (News) wrote:

You do need to lock the crank with the valves closed, so a bit after tdc, then the rings will be back in the most worn area of the bore.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
On 15/06/2018 13:38, MrCheerful wrote:

That doesn't sound a trivial thing to do.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

Not having yet got the device and therefore instructions, it could be it doesn't actually need much pressure. Plenty friction in a V8 ;-)
Found a U-tube video of one being used. Looks like it may be the answer to finding problems like this without major dismantling. Seems you can often hear where the air is escaping from.
--
*'Progress' and 'Change' are not synonyms.

Dave Plowman snipped-for-privacy@davenoise.co.uk London SW
  Click to see the full signature.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

Ah - bit more of a problem with an auto. ;-)
--
*INDECISION is the key to FLEXIBILITY *

Dave Plowman snipped-for-privacy@davenoise.co.uk London SW
  Click to see the full signature.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
On 15/06/2018 14:33, Dave Plowman (News) wrote:

not necessarily, a hammer handle in the alternator belt at the bottom pulley should do, or even a spanner on the bottom pulley, as long as you don't let it get a run up then either would do. if it has one, then you could drop off the lower part of the 'adaptor plate' to expose the ring gear.
and before anyone says take the starter out, it isn't easy !
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

Motorsforum.com is a website by car enthusiasts for car enthusiasts. It is not affiliated with any of the car or spare part manufacturers or car dealers discussed here. All logos and trade names are the property of their respective owners.