My 940 is a slapper

I'm curious about the quieting down after warm-up. Is the knock louder with increased throttle? Also, did you run out of oil at some point?

Mike

Thanks Mike, yes the noise is quieter when warmed up,and when underpower disappears. As I increase the throttle the power-on brings on the knock annoying if it's only 10 thousandth of an inch. My son drove her for about

260 miles on low oil late November."bottom of the dip stick" as much my fault for not checking. Terry

Just wanted to be sure... exhaust leaks are often mistaken for rod knock (sometimes even by pros on an "off day.") It was the "quieter when warm" that got my attention for that. But the great sensitivity to the throttle (as opposed to being sensitive to going beyond, say, 1/4 throttle) and the history of being run oil-starved puts us back in the "slapper" territory again.

With gentle driving you could get years of boring service. Proper repair probably means an overhaul, though, because the effects of oil starvation or pretty widespread. You really should start picking out a replacement car soon if you aren't that dedicated to the old girl. (My wife *hates* it when I talk like that!)

Mike

Jeez, that's bizarre for it to be acting up like that, seriously, 112K is

*nothing*, that motor should easily be good for 300K.

I agree. Have a look at the exhaust manifold gaskets. I had the same problem once and turned out to be the gaskets. You could also do the compression test.

Regards,

Boris Mohar

Got Knock? - see: Viatrack Printed Circuit Designs (among other things)

He mentioned later it was run very low on oil, if it was in fact starved, that'll kill any engine in short order.