You contradict your own theory of the physics multiple times within each post...
You place a lot of power on the small overlap of the valves at really unimportant times in the stroke... but ignore how a malfunction of the separation of the intake/ exhaust functions on a MAJOR movement of the piston ( the exhaust valve open on the downward power stroke ) would affect the situation.
Your impression of the effect 10 feet away down the exhaust pipe and after going through a muffler of a low volume low pressure gas completely ignores the definition of a gas.

__________________
1980 240d ,

chain elongation, cam marks reference:
http://www.peachparts.com/shopforum/diesel-discussion/10414-help-i-need-check-stretch.html

http://www.peachparts.com/shopforum/diesel-discussion/305365-9-degrees-chain-stretch.html

evap fin cleaning:

http://www.peachparts.com/shopforum/diesel-discussion/156207-photo-step-step-post-showing-w123-evaporator-removal-1983-240d-1982-300td.html?highlight=evaporator

A/C thread

http://www.peachparts.com/shopforum/diesel-discussion/297462-c-recommendations-mb-vehicles.html

Guys, there's an easy way to settle this. You both own diesel cars. Why not go out, disable your fuel system somehow, get someone to crank the engine over, and see for yourself if there is suction at the tailpipe. I'd do it myself if I wasn't currently rebuilding my transmission.

Yeah, wire the shutoff and crank it.

__________________
CC: NSA

All things are burning, know this and be released.

82 Benz 240 D, Kuan Yin
12 Ford Escape 4wd

You're four times

It's hard to

more likely to

concentrate on

have an accident

two things

when you're on

at the same time.

a cell phone.

www.kiva.org It's not like there's anything wrong with feeling good, is there?