Author Topic: only getting pressure reading on gauge (Read 4467 times)

superman293 · « **on:** June 20, 2006, 08:49:17 pm »

I just got done installing a pressure/vacume gauge in my 2000 TDI, I installed a fitting in the 3" soft pipe that is clamped to the intake. im only getting a pressure reading, no vacume, I know that the pressure does work on the gauge, do i need to "T" into a different place?
thanks

vwmike · « **Reply #1 on:** June 20, 2006, 10:28:46 pm »

VW diesels don't have throttle bodies and without a throttle body you're not going to see any vacuum.

superman293 · « **Reply #2 on:** June 21, 2006, 01:54:53 pm »

so there is no way to get a vacume reading?
thanks

vwmike · « **Reply #3 on:** June 21, 2006, 02:18:16 pm »

not on that engine.

hillfolk'r · « **Reply #4 on:** June 21, 2006, 09:58:51 pm »

get a boost guage that reads psi only,ya dont need a vacuum scale

therabbittree · « **Reply #5 on:** July 04, 2006, 08:11:51 pm »

yup diesels don't have vacuum ..like a gasser..i guess you could try to tee in to the vaccum pump ..ha ..but it would be a constant reading as its a pump ..not engine load supplying the vacuum
later
Deo
\x/ hillfolk!

hillfolk'r · « **Reply #6 on:** July 04, 2006, 08:31:06 pm »

ive got an inches of water vacuum guage from a big truck that you could put in the pipe from the filter to the turbo,itll tell ya when yer air filter is clogged,its a 2 inch guage,reads to 40 inches,i used to have one in my rabbit truck,with a k+n style filter,i never saw it move

madmatt · « **Reply #7 on:** July 15, 2006, 01:38:12 am »

if you do see a vacuum you need to look at the intake to see where the restriction is.