Vehicle Fitment
This part is universal
- Only Petrol Engine.
Product Details
Universal 0 to 300 psi Analog Flex Hose Compression Tester by CTA®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and deliver great quality at an affordable cost.
Specifications
| Spark Plug Fittings: 14 and 18 mm |
| Gauge: 2.5" (64 mm) |
| Measuring Range: 0 to 300 psi(0-21kg/cm²) |
Features
- 15" flex hose allows access to all cylinders
- Side release valve permits multiple readings without removing tester
- Specialty tools to get your job done in a safer and easier fashion
- Practical and efficient solutions for pros and DIYers alike
- No more headaches, beard scratching or tool throwing
- Blend of exceptional quality, convenience and functionality
- Made from superior grade materials to be lightweight yet durable
Preparation
- Run engine for approximately 10 minutes or until it reaches normal operating temperature.
- Stop engine, disconnect & number the spark plug wires. This makes it easy to identify the wires for proper reconnection.
- Clean any loose dirt from around the plugs & remove them. Placing them in order on a clean surface will help to compare any compression problems with the condition of the plugs.
- Remove the high tension lead from the center of the distributor & ground it. On electronic ignition systems, disconnect the electronic ignition module or remove the primary battery terminal from the coil. On GM HEI, disconnect the primary lead from the distributor cap.
- Remove air filter & set throttle plates wide open using caution not to damage linkage or throttle body components.
Testing
- Thread fitting into spark plug hole.
- Crank the engine for at least four compression strokes, or until pressure stops rising on the gauge.
- Record the compression reading. Multiple readings can be taken from the same cylinder by pushing the side relief valve.
- Remove the tester & return gauge to zero by depressing the side relief valve. Continue to next cylinder.
Results
- On a normal cylinder, the tester should record a higher pressure on each stroke until peak pressure is reached. All cylinders on the same engine should show pressure within the manufacturer’s specs.
- If pressure fails to climb, or if it remains at the same pressure for several strokes & then starts to climb, the probable cause is a sticking valve.
- If the pressure on 2 adjacent cylinders are more than 20 lbs. lower than the other cylinders, the probable cause is a defective head gasket.
- If the pressure is considerably higher than the manufacturer’s specs, probable cause is carbon build-up in the cylinder.
- If pressure is low or varies widely between cylinders, put a teaspoon of SAE 30 oil into each cylinder & retest. If the pressure increases considerably, probable cause is poorly seated or worn piston rings. If pressure changes little, probable leakage is through the valve.
CTA® started in 1978 with a few of specialty tools and a lot of great ideas. In time, the founders of the company decided to take some of their ideas to the market which allowed CTA to expand from manufacturing about 20 specialty tools to over 1000 tools. Today, from micro-thin "Plastigage" to 600 foot-pound torque wrenches, CTA Manufacturing Corp. offers one of the widest ranges of professional specialty tools in the industry. Whether tuning up your ‘68 Corvette or changing the oil on a John Deere tractor, CTA can provide you with the tools needed to do the job.
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