Adding a vacuum gage to boost line to check for leak...?

[fkovalski]

I just added gauges to my truck (don't ask why I waited so long... ) But in order to insure I did a proper install and make sure there are no leaks, can I draw a vacuum on the line to see if it holds to insure it is hooked up properly to the boost gauge? I would draw it at the end of the line at the manifold.



Can I do damage to the boost gauge if I draw a vacuum on it?



Is there abetter way to check the line integrity?

 

[Bob4x4]

You can apply vacuum to the engine end towards the gauge but there shouldn't be any leak points in a one piece line. The only connection risk would be at the gauge and there is very little likelihood of. Leak there

 

[JJPage]

Build a chuck like this, insert into the turbo intake tube or onto the turbo itself and apply pressure until you find the leak. Start around 10 lbs, increase to around 35 lbs, if you have a leak, you should find it by then.

 

[B.G. Smith]

If you get the pressure up to 35#and the plug is still in the hose be sure you have it pointed down range, you will have over 300# force on the plug and should it come out you can probably take an elk early up to 50 or 60 yards. bg

 

[JJPage]

If you get the pressure up to 35#and the plug is still in the hose be sure you have it pointed down range, you will have over 300# force on the plug and should it come out you can probably take an elk early up to 50 or 60 yards. bg

Good point, should have mentioned it can be dangerous. I have had it blow off the turbo on my 03 and severely damage the oil filter in it's path.

Another suggestion, when installing the quick connect plug, install it into the side of the square on the PVC plug, instead of into the end like in the picture. That will give you more clearance between the turbo and oil filter on a 3rd gen, will also be easier to connect air hose.