Best quality spark tester spark plug tester MST-880

**Precautions
1.1 The product is a high-voltage detector, so when the detectors are not in use, be sure to take the battery out to avoid danger.
1.2 If the discontinuous state appears in the process of using, that is normal, please loosen the switch with 3 seconds, you can continue to use.

Compared with MST770, this one has two testers, one is for good plug, another one is for bad, user could compare the difference

**Feature Locations



**Test Principle
In automobile ignition system, the high-voltage ignition coil generates a high-voltage (10,000 volts or more), and the spark plug diverts it from high-tension ignition coil into the cylinder engine, spark between the spark plug electrodes will ignite the mixture. The detector could tell the good spark plugs from the bad by the strength of the spark.


**Test Method

1). Place the spark plug on the pedestal
2). Power-on
3). Press the key switch, the red LED will illuminate and the good spark plug will generate a strong spark and the bad will generate a faint one or not .

4). Loosen the key switch, take the spark plug down the tester by pinching the bottom of it.

**Accessories

1. 12V linear regulator
2. Operating Manual
Shippment Time:
1 to 3 business days for order processing afer received the payment.
The shipping time is about 2 to 5 days via UPS DHS and EMS. 15 to 30 days via HK POST AIR to worldwide.
If you are from Russia, ukraine, Argentina, Brasil, please choose EMS as delivery way.
Note:
We hope it can arrive on time but since it is the international delibery, shipping time will highly depend on the courier company and local customes/duties. Thanks for your understanding.
Return Policies:
If you are not satisfied with the purchase, please contact us quickly, we can exchange one to you, but you should be responsible for the returning shippment cost.
If you have item problems, just email us quickly, we will try our best to solve your problems. Please kindly don’t leave the bad feedback before contacting us. It is not a best way to solve the problems.
Bigger quantity, more favorable price given.
Other polices:
We declare low value on invoice to help customers avoid high payment import tax, if you need write real value please leave messages to us.

>>> Main products include:
     1, Diesel engine parts (nozzle, plunger, delivery valve, head Rotor, injector, fuel pump and other accessories) 2,  Injection pump test bench 3,auto tools 4  Auto parts 5, special vehicles 6 , Turbocharger.......
     Production process using advanced computer control and digital display systems, production technology, strong technical force . High quality, high technical performance, with micro-controller and digital functions. Products are sold  more than 100 countries and regions of all world .

Contact: Guodong Zhao (MANAGER)

Tel:+86-538-6311676 

Fax:+86-0538-6306706
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