Originally Posted by
ShelGame
Well, err, uh, nothing - yet.
So far, I've only pulled the dist cap to see how much rotor play there is. Seems to be quite a bit, but I'm not sure what's acceptable. Or, how to cure it. I have not checked the shutter wheel yet. But, when I assembled the engine last spring, it was solid.
If it's in the gear lash between the intermediate and the oil pump, there's really nothing I can do. If it's between the oil pump and the dist shaft, I guess I could try to take the play out with a shim, although that seems like it would be difficult to do. If the shutter wheel is loose, well, that seems straightforward enough.
Mostly, I was wanting to see if this is even a problem, or if it's just a typical RPM signal for our cars.
The data above is logged direct from the ECU. So that's the RPM that the SMEC is reading from the HEP pulses...