Mythbuster: continuing project thread of my 1303 '75

[Wally]

Originally Posted by spannermanager

Hey Walter, hows it going, looks like backfire damage to me,...

I think you are right m8. Funny thing is it seems te generate a back-fire on a fuel cut (which comes from the hard-cut rpm limiting action of the ecu).
As I already replaced blown up vacuum lines (pressure lines actually) on the manifolds AND had warpped butterflies, back-fire as a cause is right up that line of thought.
Now, how does fuel cut-off cause a back fire (on a turbo engine)??

@ Mark: thanks man, but I have already replaced the faulty rocker by another one and the engine started right up and ran smooth, so probably no bend valve(s) (again). GB pushrod is also still straight as an arrow!