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S350 Replacement Spark Plug DIY

 JulianWalker
  3
 September 11, 2024
I haven’t been to the jar for a long time, send a post

Open the cover and get ready to start

tools and materials

Must have torque wrench

NGK, bought from NHK Tmall flagship store

Model number, system match

16mm sleeve

Extension pole, conversion head, my set of gadgets is Xiaofei, this Zhongfei needs a conversion head

gloves

The cabin is a little dusty

Remove front trim panel

Pull off exhaust pipe

Remove empty filter box

Three on each side

Remove the ignition coil screws first

Remove all screws

Pull out the ignition coil and slide it aside

Remove old spark plug with sleeve

It looks very dirty. I ran it with a Dafeng 5000 last time. The spark plug is very dry and there is no engine oil, which means that the valve cover does not leak.

23NM

the second cylinder

Comparison between old and new

the third cylinder

Old Bosch

the fourth cylinder

When installing, it should be slow and the motor should not bump. It is a meticulous job

the fifth cylinder

Give a close-up

Sixth cylinder

During installation, replace them one by one, remove one, install another, and then insert the ignition coil back in to prevent foreign objects from falling in

Torque wrenches are a good thing and must be done

The surprise came. After replacing it, it started, but it kept shaking and ran out of fire.

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