BlueSpot 07908 Bedienungsanleitung
8PCE PETROL
COMPRESSION TESTER
User Manual
07908
01
Thank you for purchasing a BlueSpot product, you can find further information
on our range at www.bluespot.uk.com. Please ensure that you are using the
product correctly and that all guidance and cautions are followed in accordance
with the instructions. Please retain these instructions for future reference.
General Information
Please make sure that you read these instructions carefully in order to avoid injury when
using the tool. Follow all health and safety rules and regulations. If in doubt and available
please contact a more knowledgeable source.
DO NOT use if damaged.
• If tool is damaged do not use as this may cause damage to property or injury
• As with all vehicle testing and maintenance please use appropriate fixing such as
axle stands or wheel chocks
• Maintain tool in good and clean condition for best and safest performance.
• Keep the work area clean, uncluttered and ensure there is adequate lighting.
• Maintain correct balance and footing. Ensure the floor is not slippery and wear
non-slip shoes.
• Keep children and unauthorised persons away from the work area.
• Always dress appropriately and wear the correct PPE such as goggles and a dust
mask if required.
Refer to vehicle manual and contact manufacturer if unsure.These instructions are
intended as a guide only.
Safe use
The BlueSpot 8 Pce Petrol Compression Tester is ideal for accurately checking the
compression of petrol engines.The 75mm diameter dial gauge reads up to 300psi.
The set contains 1 x 130mm straight push-on connector, 1 x 130mm angled push-on
connector and 1 x 470mm flexible hose.
Thread sizes: M10 x 1，M12x1.25，M14x1.25，M18x1.5.
Introduction and Specification
02
As always take care not to damage any other parts of the engine when working with
this tool
1. To prepare for the test run engine so that car reaches “normal” operating temperature.
(Refer to manual for this vehicle for normal safe engine temperature)
2. TURN ENGINE OFF
3. Place keys away from car to ensure that engine is not turned back on whilst you remove
and number spark plugs wires according to cylinder. Keep a note of which wire corre
sponds with which cylinder
4. Loosen spark plugs
5. Clean spark plug wells with appropriate tools. We suggest an air blow gun and or wire
brush.
6. Set throttle position wide open and remove the air filter from the vehicle
Remember to reset throttle position after completing test failure to do so could
result in serious damage to engine and/or self
7. Disconnect the ignition system following manufacturers recommendations
8. From the kit select the proper adaptor and screw into the hose and then into the spark
plug well. Hand tighten the adaptor into the well. You do not need to use a wrench to
apply extra force, hand tight is correct for the test.
9. Connect the gauge to the hose and make sure that all fittings are correct and tight.
Vehicle is now ready for test. As a final precaution please review the above steps to
make sure that all instructions have been followed.
How to use
Performing Test
1. Crank the engine between at least 5 times or until the test gauge stops rising.
2. Record the reading and then press the pressure release valve button
3. Repeat the test for all the cylinders on the vehicle
The push on connectors can also be used to test each cylinder
03
1. The test needle should travel up the scale until it reaches the peak for that cylinder. You
should find that each cylinder does not vary more than 10% from cylinder to cylinder. If
you find that they do you may have a problem.
2. If the test result is high then this may indicate that the cylinder has carbon build up. It
may also indicate that the head of the cylinder has been modified.
3. If a reading on two adjacent cylinders is 20psi/kg/cm² (or more) lower than the other
cylinders, the problem may be a cracked cylinder head or broken head gasket. In this
case then coolant and oil may be found in both cylinders.
4. If the readings are too low, or vary too widely between cylinders, pour a teaspoon of
SAE 30 oil into each cylinder and retest them. If the readings increase considerably, the
problem may be poorly seated, or worn piston rings. If the readings remain about the
same, the valves and/or associated components may be the problem. A burned or
damaged piston may also cause the same results.
Findings
Completing test
1. When the test is complete please make sure that you clean and re install the spark
plugs as they were initially removed. You can also take this opportunity to replace the
spark plugs.
2. Reconnect the leads to the spark plugs
3. Return the throttle to closed position – FAILURE TO COMPLETE THIS STEP CAN
RESULT IN SERIOUS DAMAGE TO THE ENGINE
4. Reconnect the ignition system
Contact
Find out more about the Bluespot® Lifetime Guarantee at www.bluespot.uk.com
Tel: 0800 093 0115
Email: [email protected]
Orme Business Centre,
Greenacres Road,
Oldham,
OL4 3NT
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