Charge air cooler pressure test cap

**Frank S** · Dec 11, 2023, 08:27 PM

A truck came in with the complaint of no boost pressure
the first thing I did was to make a test cap to use my air compressor to find where the problem was.
I used a standard rubber plumbers cap to block off one tube at the turbo then cut a length of 3" PVC and cemented a cap to it then drilled the cap and installed a Schrader valve After applying air pressure I determined the cooler itself had been damaged in the recent accident So I replaced the cooler.

Charge air cooler pressure test cap-img_20231116_142842cc.jpg

Charge air cooler pressure test cap-img_20231116_142856cc.jpg

**DIYer** · Dec 11, 2023, 11:54 PM

Thanks Frank S! We've added your Charge Air Cooler Pressure Test Cap to our Engine category,
as well as to your builder page: Frank S's Homemade Tools. Your receipt:

Charge Air Cooler Pressure Test Cap by Frank S

tags: engine

**mr mikey** · Dec 13, 2023, 06:15 PM

I have done this many times myself. Between all the guys in the shop we had quite an assortment of sizes. Thanks for your post.

**Frank S** · Dec 13, 2023, 11:44 PM

Originally Posted by mr mikey

I have done this many times myself. Between all the guys in the shop we had quite an assortment of sizes. Thanks for your post.

As it turned out there was a long crack in the top of the cooler that one could have been welded but I noted that it looked like some of the tubes were cracked as well.
I have his truck back together with the new parts, but we still haven't received the insurance check yet