Spark plug gap and wear OK. The look black from running rich (misfiring perhaps).

The plug with broken tip should be replaced.

Are you asking about the thin plastic spacer that goes between the mirror and the door? It is similar to a shim.

I do not known what "plug seal" means.

Datsun 1200 in Kenya

the schmidt TH in the photo has 28 slots

the wheels in first pic have 14 slots

Plug seal?

Hmmm ... it does not seem to lose power when it makes the noise, and will rev higher at which point the noise ceases.

Is the leak inside the passenger compartment or in the engine compartment? The dashboard (firewall) divides the two.

The easiest fix is to bypass the heater (connect the long heater hose to the back of the cylinder head). It usually solves a leak unless the fitting is rusted out.




You may leave it this way temporarily or permanently -- the engine runs fine either way. Just depends on whether you need the heater for de-misting the windshield.

Video is dark, but I'm revving it to about 6500. As it sweeps past 6 it makes the sound. It is more pronounced when actually driving the ute, in the video it is just sitting in the garage.

10 second audio

True that.

From the photo it can be seen it is not a camber problem. It is the wrong wheel fitted (too much positive offset).
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