OTC 5613 Vacuum/Pressure Gauge Kit

The OTC 5613 Vacuum/Pressure Gauge Kit is an indispensable tool for accurate engine diagnostics. Whether you're troubleshooting vacuum leaks, fuel pressure issues, or HVAC performance, this kit delivers professional-grade results without the shop price tag.

Very accurate readings and easy to use. Comes with all necessary adapters and a sturdy case. Perfect for diagnosing engine issues or vacuum leaks. A must-have tool for any serious DIY mechanic or technician.

Just what I needed to determine manifold vacuum for sizing the power valve on a Holley carb. Easy to read.

Works good

The first gauge I ordered from Amazon came reading 4" of vacuum out of the box. I hooked it up to my MityVac pump and confirmed it stayed at 4" off throughout it's entire range. I was disappointed. So I returned it for a replacement. Amazon handled the exchange quickly and with zero hassle. The 2nd gauge to arrive read 0 at rest, and stayed right on track with the MityVac pump through it's entire range. Ahh, much better.So far I have only used this on 2 cars, and they have both had excellent readings with very steady needles on the gauge, so I cannot say it has actually helped me diagnose anything other than properly tuned vehicles, but I am certain it will come in handy one day and I like having it in my tool collection. My only minor complaint about this gauge (other than the questionable quality control on the first one I received) is that I would have liked the case to have been molded a bit differently. While it is plenty large overall, the way the recesses are formed for the gauge and hose means you need to disconnect the hose from the gauge to really get it to set in the case properly. It would have been nice if there was more clearance molded in to allow the hose to stay connected to the gauge and allow for nice gradual bends instead of sharp creasing bends. As I said it is a minor complaint, overall this is a nice gauge.

This is a must-have for any mechanic's tool chest. Whether you are tuning up an old Mustang or troubleshooting a new Honda, a vacuum gauge is indispensable.My kit included:-One 3/1/2" Vacuum gauge encased in rubber--this thing is heavy duty-One 24" hose-One in-line barbed connector-One Fuel Line Universal Adapter-One "T" barbed connector-One conical nozzle adapterThe gauge also reads both vacuum and pressureScale reads from 0-30 inHg, 0-70 cmHq, 0-15psi, and 0-100kPaHow does it work. By getting a good vacuum reading (generally off of your vehicle's intake manifold), you can tell a lot about your engine's health. there are some great YouTube videos on how vacuum/vacuum gauges work, but here are some basics (engine idling and warm):-Most engines read between 16-22 inHg. This should be a steady reading once the engine is warmed up-A reading of 8-14 inHg that is steady could indicate a small vacuum leak, a slight timing issue, or poor compression-A reading of >22 inHG that is steady is most likely a timing issue-Small intermittent drops are caused by a problem with the valve spring or a sticky valveThis list isn't even close to being all inclusive and doesn't even go into non-idling vacuum diagnostics. There are plenty of online resources for more information.Bottom line is if you have the skills to at least change your own oil, you can benefit from using a vacuum gauge.This gauge kit is durable, comes in a great sturdy case, and has a large easy-to-read gauge face with a handy. I would recommend this to anyone with a rough running engine or a home hobbyist who likes to keep their car in top condition.

I use this to set up my Holley carb on my SBC. It does a great job.

Needed a Vacuum gauge ......one I had for years has seen its time This works very well