OTC 5605 Deluxe Compression Tester Kit Review: The Kit You Need

If you buy the OTC 5605 Deluxe Compression Tester Kit, you’ll be provided with:

• An Analog Gauge with a 2.5-inch chrome ring and cover
• Gauge Measurement Range from 0 to 300 PSI and 0 to 2100 kPa
• A 25-inch flex hose with quick coupler
• A 5-inch Flex adapter of 16mm
• An 8-inch lengths deep well connector of 14mm
• A black rugged blow-molded hard plastic case.

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The OTC 5605 Deluxe Compression Tester Kit has the following specifications

• Brand: OTC
• Model Number: 5605
• Gauge size: 2.5-inch diameter
• Gauge’s Measurement Range: 0-300 psi, 0-2100 kPa
• Hose Length: 25-inch
• Quick coupler included with hose
• Deep well connector: 14mm, 8-inch length
• Flex Adapter: Ford Triton, 16mm, 5-inch length
• Standard Reach Adapter: 14mm, 12-inch length
• Long Reach Adapter: 14mm, 12-inch length
• Thread Adapters: 10mm, 12mm, 18mm
• Case Material: Blow-molded hard plastic
• Case Dimension: 3.5 x 15 x 4.6 inches
• Kit weight: 2.09 Grams

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Gauge Quality

The OTC 5605 Deluxe Compression Tester Kit’s Gauge is one of the best things of this tester kit. An analog Gauge that can help you measure both psi (pound per square inch) and kPa(kilopascals) allows you to do two jobs at once. You measure one thing and you get the other immediately without any conversion steps. This measurement matches international standards so you won’t have to worry about it! The gauge is also really precise and the reading work you do can be so effortless. You just need to look at the steady needle on the gauge, instead of looking at the digital numbers that sometimes struggle to appear. With a protective glass and some metal cover, your gauge can easily withstand the workshop conditions like dust, grime, bumps and knocks without being too affected by these.. 

Hose Length

With a 25-inch hose, you have excellent flexibility and reach if you want to access some spark plug in your small engine. This is especially good if your engine spark plug is located deeper in the engine bay, as you can connect to the spark plug so easily with this hose.

Adapters

With the standard reach adapter of 14mm and 12-inch length, you can easily connect to any spark plugs in common gasoline engines. The long reach adapters with the same length and size can still do a pretty good job if you want to connect the tester to spark plugs that are further down in the cylinder head. The threat adapters with 10mm, 12mm, 18mm can be good options if you run into some new engines with different spark plug types. With all these adapters, it means that you can also try out something other than small engines like some motorcycles or older vehicles.

Carrying Case

Your carrying case is highly durable as it is constructed from hard plastic. This means that not only the outside part looks protected, but the inside components of the kit can be protected as well. As long as you place all the components correctly, you won’t have to worry about the damage when you bring your kit around or when you are storing it. 

The case layout is also really intelligently designed as it helps you keep all your tools neat and separated. Once you open the box to get any of them, you can easily get the tools you wanted from the layout!

The OTC 5605 Compression tester kit can bring a lot to the table:

• An adapter set for many kinds of engine
• A Speciality adapter of Ford Triton
• Great durability for the case and components with nickel finish 
• A Dual-Scale analog Gauge
• A long flex hose
• Rugged case
• Repair kit included

However, this kit also have some potential drawbacks:

• A little high cost
• Still lack some other adapters
• Not for those who don’t like analog gauge

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With the brilliant design from OTC, the 5605 model of compression tester kit surely has a high and steady quality for the users. Some users have used and told us that this tester can bring a lot of consistent and reliable readings for them. However, to correctly measure compression, the testing procedure is also really important, as you should know how to correctly measure compression with the compression tester.

Your OTC 5605 Deluxe Compression Tester Kit can be accurate for a really long time, up to several years if you store it correctly and not use it too roughly during your work.

We believe that the OTC 5605 Deluxe Compression Tester is built for long lasting performances. With the carrying case that can protect all the components during the transportation and storage process, you won’t have to worry about the tester kit being damaged. About the replacement part like the hose gasket, then eventually you’ll have to use it, but it will be long until that day. This kit is built to withstand wear and tear if you have to use them in workshop conditions.

We believe that the OTC 5605 Deluxe Compression Tester Kit can help you enhance your experience as well as the engine performance. With a gauge that can measure both psi and kPa at the same time, you can easily work with any type of manual. Different manuals of each brand can have different guidance about the type of unit, however, you just need this compression tester for both of those. This eases your working process a lot!

With a wide range of adapters, this compression tester kit allows you to work with different types of engine at the same time. With its exceptional hose length of 25 inches, you can fix not just your small engine but also other machinery too!

In our team's opinion, this kit works the best with those gasoline powered engines. This is the case as the set of adapters matches the size of the normal gasoline engine’s spark plug. While the adapter set allows you to work with many types of engine, this kit is usually more ideal for small engines that are usually found in lawn mowers, generators, trimmers or outdoor power tools.

This kit might not be the best choice for an engine with deep spark plug wells, so remember it when choosing the kit or the engine!

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The OTC 5605 Deluxe Compression Tester Kit is a reliable and flexible tool that you can use to diagnose your small engine health. Either you are a DIY mechanic or a professional technician, this kit is always user friendly and gives you high quality components with a wide set of adapters. With the accuracy and flexibility it gives to users, this tester kit is an excellent choice for those with engine compression issues.

1. How do I use the OTC 5605 to perform a compression test?

Once you buy the kit, there’s always an included manual to follow. This manual give you guidance on how to use the kit to test your small engine compression. In our experience, we believe the steps can be warming up the engine, then disconnecting the spark plug. Next, you may have to connect the adapters and hose to the tester. After that, you can provide some testing on each of the engine cylinders. Your manuals also provide you with some safety cautions to follow with.

2. What are normal compression readings for different engine types?

Normal compression levels can be different for each type of engine, especially their size or their manufacturer years. To get the right number, we believe you should check your engine manuals for the right values.

3. Can I use this kit on a diesel engine?

The OTC 5605 Deluxe Compression Tester kit is designed for testing on gasoline engines. If you need to use it for a diesel engine, we suggest that you consider another option.

4. Where can I find newer replacement parts for the OTC 5605 kit?

If you have already used all the replacement parts, like hose gaskets or adapters, then it’s time to buy new ones. These part might be available through the manufacturer store or other distributors. You can also search online by typing the model or the part name that you need to get one.

5. Are there any limitations to the OTC 5605 kit?

We believe that the kit's 12-inch adapter length might not be suitable for very large engines. This length might not be enough for engines with deep spark plug wells. Remember that this kit is designed for gasoline engines so you should just use it for gasoline engines only. If you want to use it for diesel engines, you may need some additional adapters or other kit.