Vacuum gauge - Where to locate ?

[manofgresley]

Hi all.

My Grandson, bless him, has bought me 2 gauges to fit to my 2001, CLK 320 (W208) engine, one is a Voltmeter, i know how to fit that, but a vacuum gauge ???.

Can anyone supply any info, photos would be great on where to splice it into, the gauge comes with a very small bore pipe and a "T" piece so i assume you have to cut into an existing pipe, but which one is the easiest?

 

[whitenemesis]

There should be a vacuum take-off somewhere on the inlet manifold?

 

[John Jones Jr]

Have a look at T'ing into the fuel pressure regulator vacuum hose.

 

[manofgresley]

Hi.

Thaks for tip, excuse my ignorance but where is that located on my engine.

 

[John Jones Jr]

Hi.

Thaks for tip, excuse my ignorance but where is that located on my engine.

Welcome. The FPR is located on the fuel injector rail, not sure where exactly on your engine, just look for a vacuum hose usually black and about 3 or 4mm dia.

 

[John Jones Jr]

Here you go:

https://www.google.ie/search?q=merc...3OHCulfCM:&usg=__07JqGVm3lMi4FO-mkxvdV4pMzWQ=