If it helps mine had a very slight but noticeable misfire at idle when it was dumping sludge. Maybe TADTS but could be a sign. It suggests a compression test would show something if the idle was lumpy.
Certainly could use an oil change looking under that cam cover!
Kevin
there is a very very slight blip every 30secs, only someone like a forum member would notice it ( not Mr Joe Public
) but it actually idles fine in relation to revs and consistancy outwith this...
ive cleaned the cam cover and gasket and will turn it over every horur or so today and see how it behaves, i dropped both rad hoses last night and they pretty much sugested that it was HG ( thick with sludge) although the coolant was still flowing freely.
Compression tester on order, locking "kit" on order, nothing happening till Wednesday on strip down..
Of course the other side is it has ahd hgf failure and the seller hasnt had it properly cleaned / flushed but hasnt told me it went previously and assumed its gone again....long shot though.