Vacuum Line Location? (1 Viewer)

[xumFJ40]

Were is the most convienient place to hook up a vacuum gage on these trucks?

 

[xumFJ40]

No takers?

No one w/a FSM?

Want to do a quick check to make sure there are no leaks...

I am of course assuming that the same principles apply and I will be able to detect an exhaust leak with a vacuum gage on a 100...

 

[calamaridog]

Work with me here. How do you find out if there is an exhaust leak by measuring the vacuum?

I've got an FSM but not with me right now. I can look Thurs or Fri if need be.

 

[xumFJ40]

Calamaridog,

No problem....I believe that the basis for detecting a leak w/a vacuum gage is this:

If there is no leak, the gage should hold steady at n/in mq(inches of mercury) at idle...if there is a leak, then the gauge will jump.

Check out this link: http://www.ih8mud.com/tech/vacuum.php

 

[calamaridog]

Got it, good tech article.

I'll check the FSM when I have a chance and see what it says about the exhaust system.

I haven't gone there yet as I'm paranoid I might have a cracked exhaust manifold, like so many others.

 

[xumFJ40]

Right!...just the reason I want to check...

Thanks,

 

[xumFJ40]

Btt...

 

[calamaridog]

FSM doesn't say anything about leaks from exhaust manifold, as far as I can tell. I found a diagram having to do with vacuum lines but my scanner is on the s***ter. When I get the new one plugged in, I'll post the diagram here.

PCV valve is a possible location for vacuum. Used the PCV for introducing SEAFOAM to the 3.4 on the Taco.