4-Cylinder

The engine isn't in the best condition after what you did to it, so you may need to help it along every now and then and check that nothing moveable has jammed. Other than that, there shouldn't be any tricks to it.

Camera: I don't think you can complete this level without the free camera. Something to note, though, is that the touch controls seem to have more authority over moveables when at the original viewing angles (i.e. 45 degrees to the grid), so you may need to change your angle if something keeps slipping out of your grasp.

Performance: I was noticing lag on my Note II and since this is a physics-based level, any device with less power may render this level unplayable. Sorry - there's almost nothing purely aesthetic that I could remove to enhance performance.

General Tips:

Spoiler: Tip 1

The engine does have some tools for helping to control it precisely when necessary.

Spoiler: Tip 2

One of the cylinders may need a little help getting seated properly, initially, though turning the engine over may be enough.

Spoiler: Tip 3

Sometimes a running engine will be too much for B to handle and you may need to turn it off for a moment or two.

Spoiler: Tip 4

Those brass balls are there for a reason. Seriously; you'll thank me later.

Slightly more specific hints: (in order)

Spoiler: Hint 1

To start an engine, what do you use?

Spoiler: Hint 2

Cycle that oil...

Spoiler: Hint 3

It's a good thing B's so small - I could never get my fingers between those cylinder housings.

Spoiler: Hint 4

B: Turn it off for a moment, would ya? You don't have to, but pistons tend to give me a real headache when they hit me in the... er... head.

Spoiler: Hint 5

If it didn't happen automatically when you passed it, make should to keep/bang your eye on the ball. It's for your own good, honest. You may need it later.

Spoiler: Hint 6

Hey B! I didn't know you could walk on a crankshaft! You can't? Oh. Maybe if it weren't spinning so fast?

Spoiler: Hint 6.1

That caliper may help straighten things out.

Spoiler: Hint 7

Oo - another ball!

Spoiler: Hint 8

If I could just reach that last cylinder block.

Spoiler: Hint 8.1

Location, location, location. Timing, timing, timing. Here it comessss...

Spoiler: Hint 9

B: I'll just have a look inside the air filter and check you haven't wrecked that, too.

Spoiler: Hint 9.1

Oh look, there's a spoke missing. I hope the insurance covers something so small.