02-03-2015, 01:37 AM
great question!
Google "engine smoke machine to find vacuum leaks."
the commercial machines are $$$, easy to make, DIY , has a Diesel glow plug in a box and some diesel oil and a 12vdc power supply,
no engine is off. or it gets lung cancer... LOL
keys in pocket.
you pump in smoke (to plenum) using shop air, regulated. to low flow.
and find the leaks,?
the hard part (very hard) is knowing what must not leak and what will. (there will be some that look bad, and are not, like TV shaft, tiny leaks.)
normal leaks is the shorter list.
1: the main air intake will leak, so you block that at air cleaner.
2: the tail pipe will leak because 1 head valve is always open.
one poor guy with nasty 8v throttle body had internal leaks, cracks from icing we guess. a monster to find,
can see injector cushion leaks here.
on other gaskets.
Google "engine smoke machine to find vacuum leaks."
the commercial machines are $$$, easy to make, DIY , has a Diesel glow plug in a box and some diesel oil and a 12vdc power supply,
no engine is off. or it gets lung cancer... LOL
keys in pocket.
you pump in smoke (to plenum) using shop air, regulated. to low flow.
and find the leaks,?
the hard part (very hard) is knowing what must not leak and what will. (there will be some that look bad, and are not, like TV shaft, tiny leaks.)
normal leaks is the shorter list.
1: the main air intake will leak, so you block that at air cleaner.
2: the tail pipe will leak because 1 head valve is always open.
one poor guy with nasty 8v throttle body had internal leaks, cracks from icing we guess. a monster to find,
can see injector cushion leaks here.
on other gaskets.
http://www.fixkick.com