Felix, Concerning your write up re timing, do you refer to valve timing and/or injection timing? If injection timing is it Common rail timing or the ( now old ) mechanical system? If Common rail whose system are you referring to ? If the old mechanical system duplex or single chain? Spur or straight...

IMG_0807.JPG So the way to measure compressions in a Diesel engine with electric start with NO dismantling whatsoever? By measuring the resistance of the starter motor. How to perform the test; Disable the engines fuel injection system. Using a Engine diagnostic Oscilloscope ( preferably a four cha...

Greetings Alex, What a super illustration of valve bounce and obviously well knackered guides. If that depicted valve is an exhaust one and the wrist watch engine depicted has run for many hours then the red hot gases flowing continually across its seat during the bounce cycle must have been apparen...

RESISTANCE is the word applicable here. Everyone must have encountered it in some form or another in their lives. So Mr Ohms and that upside down circlip symbol denoting the unit of resistance is how to measure each and every cylinder compressions accurately and very quickly with no dismantling what...

It appears to me to be somewhat of a problem here engineering wise to crack this one? As there are more than one ways of skinning a cat ( as they say ) perhaps a different angle of attack might be the way to go. A personal approach maybe. So I put it to you in a different format. Winding back the ol...

How far back though? Back to that voice speaky tube with that whistle, long Morse cable or fly by wire jobby? Perhaps the same team who designed the system used to work for Boeing, they have it worse that computer taking over and bringing down fully loaded aircraft. Perhaps computer designed systems...

BP and Revolver,

Further clues required here methinks?

This is what your first girl friend put out to you on your first date together?

Good old Frank Perkins, started out with them, R6 and P6.
Still got the workshop manuals for them.
And the old smokey Cats.
So racking the old brain then re the Wheatstone Bridge clue which I remember doing in the early sixties what's the answer to it all?

Don't see many ( if any ) 36 v engines but lots of Common rail stuff circuits on 5-5volts for modules and -5 volts for oxy. sensors etc. However you are ( intentionally or otherwise ) on the right track here mentioning voltage. Think about other measurements in the voltage field era and see if you c...

Only the readings amigo, only the readings.

Remember my " What's the difference between a R/H machined liner and a L/H one? "
Nobody got it over several months period.
The answer was staring you in the face every time our read the question?
Things are not always what they appear to be speech again.
The clue is in the question.

And RPM
I reckon those squirters are the worst.
Up on the top end of the governors for most of their lives.
Screamers all day X 4 of 'em performing ( well down to 3 a lot of times )

On smaller stuff Cats /Perkins Cummings / Volvo etc you can measure each and every cylinder compressions within minutes by not removing anything whatsoever on the engine to be tested. 24v 12v engines. Introduced to me in approx. 1980 and used it regularly since. Not cylinder leakage tests but straig...

Cylinder compressions, are they showing 1000 to 1500 psi?
Seems a tad high?

Way back when I measured engine noise levels by downloading an android app.from the net on my mobile phone. measured ER noise levels no probs.
Brain just remembered