Hi team, I have a 1998 Lancaster (BH9, EJ254, manual w/ Hi/Lo) with a shade over 125,000kms on the clock. I have only owned this for a 3-4 months and when I bought it it had blown HGs. Fixed the HGs but haven't really driven it much as i mostly use my motorbike for the commute to work. Also the clutch is coming up due for replacement in the next 15,000km (plate is getting skinny but not slipping yet)
HOWEVER... I have noticed when driving at a steady speed that if i let off the gas slightly then gently apply the gas again sometimes the drivetrain will feel loose and shunt a little, kind of feels like weight transfer or similar. This has happened on the flat, going up and down hills, sometimes changing gears- basically small shifts in power/weight front to back or vice versa.
Its not quite like surging (fuel or timing advance problems), feels like its in the drivetrain and not the engine.
So my questions are:
Is it normal to have this kind of drivetrain slop (or whatever it is)?
If it is not normal, what is it a symptom of? Clutch worn out? Diffs? Box?
Any points in the right direction, or tests to perform, general help would be greatly appreciated!