Fits 2017+ Chevy Silverado & GMC Sierra 2500HD/3500HD (L5P)
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Text tech helpThis kit is specifically designed for the 2017+ L5P Duramax and is rated to 30 PSI — it is not interchangeable with the standard Duramax kits for LB7/LLY/LBZ/LMM/LGH/LML (30 PSI Base Kit, 60 PSI Pro-Kit and 60 PSI Shop Pro-Kit). Includes a green anodized billet aluminum end cap, silicone hose, 30 PSI boost gauge, M-type compressor fitting, T-bolt clamp, and a 5 ft extension hose with on/off valve.
Install the tester at the turbo compressor inlet pipe. Clamp it down with the included T-bolt clamp, and use your shop air compressor to test up to 30 PSI, detecting any leaks in the whole charge pipe path the turbo normally pressurizes while boosting — including the hot & cold pipes, intercooler/CAC, Y-bridge, EGR, and all clamped connections.
You do not need to cap off the other end — the charge pipes and engine will hold pressure without it escaping through the engine into the exhaust.
A good starting pressure is 10 PSI, working up to 20 or 30 PSI (the max rating for this kit). If your system is filling too slowly, increase the pressure on your compressor outlet, but be cautious not to over-pressurize the charge pipes.
The boost gauge on the tester will indicate the charge pipe pressure. Use soapy spray to identify smaller leaks that may be hard to hear. If the system isn't filling at all, there's a leak large enough to prevent pressure buildup, or something is disconnected.
After fixing all obvious leaks, use the shut-off valve to trap pressure in the system and evaluate how well it holds. About 1 PSI loss every second or two is normal — at higher pressure (e.g. 20 PSI) it will drop faster, then slow as it approaches 0 PSI.
Stand clear from the tester when under pressure, as it or any other component may blow off during pressurization. Start with a low pressure and work your way up — do not exceed the 30 PSI rating of this kit.
TURBO BOOST LEAK TESTERS, INC. and its directors, employees, and affiliates are not responsible for any injury, death, or property damage associated with the purchase and use of any product(s) purchased from Turbo Boost Leak Testers, Inc. The purchaser assumes sole responsibility for ensuring all safety precautions are followed. Always wear approved ANSI safety glasses when using compressed air.
