finding vac leaks - tricks of the trade?

[TERRA Operative]

Cool, mate at work rides, I'll ask him if he's seen it.

Thanks.

[Bored?]

Wow, this thread got really dumb really fast. The normal thing to use for finding vacuum leaks in other things (such as vacuum bagging for resin infusion or pre-preg composites) is a stethoscope. I suspect it would still be useful even on a running engine.

[RA35GT]

Anyone got any advice handed down over the generations for finding tricky inlet manifold vac leaks. I have done the usual with a stethoscope and a tried a squeegy bottle along join etc with no joy.

Any dye or similar i can try and pressurise the system with?

I've highlighted the appropriate section.