08-11-2018, 10:50 AM
Last night Burt became very unwell....
The engine has had a light rattle at higher engine speed when warm, but not significant to pull the engine apart.
But yesterday things got pretty noisy pretty quickly! Symptoms now are:-
- Engine will idle but with a light rattle
- As soon as off idle with no load the engine is extremely clattery/knocking.
It's not a big end noise, and obviously the enigine needs to come out for inspection and repair. But until I do that in the next few days my mind is wondering what it could be. Is it possible for a 3 bearing engine to still run with a broken crank? Could be the flywheel has decided to start removing itself from the crank. Could be a piston fallen apart. No holes in the crank case (yet!). Or maybe rear main has disintegrated?
What is the 'normal' failure mode for a 3 bearing engine?
Ray
The engine has had a light rattle at higher engine speed when warm, but not significant to pull the engine apart.
But yesterday things got pretty noisy pretty quickly! Symptoms now are:-
- Engine will idle but with a light rattle
- As soon as off idle with no load the engine is extremely clattery/knocking.
It's not a big end noise, and obviously the enigine needs to come out for inspection and repair. But until I do that in the next few days my mind is wondering what it could be. Is it possible for a 3 bearing engine to still run with a broken crank? Could be the flywheel has decided to start removing itself from the crank. Could be a piston fallen apart. No holes in the crank case (yet!). Or maybe rear main has disintegrated?
What is the 'normal' failure mode for a 3 bearing engine?
Ray