Engine turn over.

[Markd1984]

Hi all

After some advice, probably a stupid question however I am doing my first build on a rev 2 3sgte engine all standard just a hobbie really i have followed all the guides etc however when i turn the crank pully with a socket i noticed the force required is not constant it seems to ease off in places is this normal?

[MartinF]

Yes, if you have the spark plugs in.

It will be one of the pistons on its compression stroke causing the resistance.

[Markd1984]

Ah thanks for the feedback muck appreciated.

I am also hearing air escaping from the flywheel side but that could be anything as their is still plenty to attach yet.

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[Ryan S]

If the engine is operating as normal then yes, This is normal behaviour. Remember the valves are opening and closing as you turn the crank.