Tag Archives: K-jet

B230E valvetrain refresh

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After 250 000 miles, I finally got around to renewing the valvetrain components of my Volvo 240. Springs and hushers being the main items to replace. I also adjusted the fuel distributor system pressure, control pressure, flow plate and CO mixture.

Cam out and new valve springs in

My new valve compressor tool

All back in!

Next up, tuning fual distributor system pressure

System pressure was only 4.6 (not shown in photo), so I carefully got the pressure regulator out and added shims to it. Quite a lot of shims was needed, I think the spring had gone weak.

After that, I centered the air flow sensor plate and checked the rest height. To be able to tighten the flow plate nut without it moving, fold over a piece of A4 paper and slot it down all round the plate. This has the right thickness to keep the plate centered.
Next, CO tuning. Incidentally, if you can’t find a photo of this either, this is what the bung down the CO adjuster screw tube looks like:
I screwed a little screw down the tube and pulled it out.

That’s it. Next, replacing the power steering pump…