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+--- Thread: Engine noises (/showthread.php?tid=7778)
Engine noises - JoeRowing - 26-07-2022
Yet another Question from your enthusiastic new owner...
With petrol and electrics sorted she (yet to be named) is now running....
... But there are a few odd noises. I'm not sure if these are "normal A7 ruby" noises or "loose flywheel uh-oh" noises.
Anyone want to offer an opinion or non-binding advice?
RE: Engine noises - Andy Bennett - 26-07-2022
Others will offer better advice than I can, but might ask things like, does that background knocking change if you put your foot on the clutch pedal? But perhaps don't run it again until those more knowledgeable have contributed as you might get a 'don't whatever you do start the engine again' reply.
RE: Engine noises - JoeRowing - 26-07-2022
Not much different - I'd have to start it again to double check...
RE: Engine noises - Charles Levien - 26-07-2022
Sounds to me like tappets or ‘little end’ rattle — has the engine been reconditioned recently?
If so, unlikely to be the latter.
Sounds to me like tappets or ‘little end’ rattle — has the engine been reconditioned recently?
If so, unlikely to be the latter.
RE: Engine noises - JoeRowing - 26-07-2022
Well, I've checked the tappets and though there are a few wear spots on the followers the gaps are spot on. 6 and 7 thou in the right places.
If it's little-end who is the go-to for new bushings? or is it new piston time?
I have a set of Renault rods and pistons that I was going to use in a spare engine but if I recall correctly they'll be to wide and too long for this standard engine.
I wonder if piston slap might be a culprit as it hasnt run for ages - but i dont know if that's a thing with sevens?
RE: Engine noises - Ivor Hawkins - 26-07-2022
Does the clacking sound go after the engine has warmed up?
RE: Engine noises - JoeRowing - 26-07-2022
Not particularly. Getting normal oil pressures I think. Very high on first starting then it tailed right off to very little at all at tickover and more at higher revs. So I had discounted big ends, it's a bit of a rattle so I might try listening for little end click and then sticking a wooden dowel against the dynamo
RE: Engine noises - John Mason - 26-07-2022
Others will know better but unless it is a pressure fed crank the oil pressure will not change with big end wear.
John Mason
RE: Engine noises - Ivor Hawkins - 26-07-2022
I think you ought to check for sticking valves, either whip the head off and check to see if they are closing when turning over on the handle or do a compression check...mine is suffering from sticking valves and the sound is very familiar!
RE: Engine noises - Charles Levien - 26-07-2022
Joe, I think if it was me I’d take the engine out and have a good look inside. I’m not sure I would run a car making that noise without knowing exactly where it was coming from.
Not a bad job really — about eight cups of tea should see it out.
Charles