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M30 Headgasket replacement, part 1

Posted by Jon Evans 20/01/2003 at 22h21

On the weekend of 12th January 2002 I was invited by H at Ashford Motorsport to visit him and let him replace my head gasket for me. I was planning to do it in the street outside my house when H intervened with his offer, and a good job it was too - we started at 14:00 and didn’t finish until 03:00 the following day. Imagine how long it would have taken me on my own (well actually I would probably have broken it beyond repair). Read on for part 1.

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Toolbox contents

Posted by Jon Evans 20/01/2003 at 22h06

In the lid of the boot you will find the BMW toolbox. Sometimes some tools are missing because previous owners lose them, this is what you should find in there.

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Amplifier pinout diagram

Posted by Jon Evans 20/01/2003 at 21h58

If you ever need to connect an aftermarket amp to your head unit, it might be useful to know the pinout of the amplifier which you will find behind the carpet trim on the left hand side of the boot.

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Ultra-bright Glovebox Torch LED modification

Posted by Jon Evans 20/01/2003 at 00h50

I modified my glovebox torch, adding a more powerful battery andconverting the light source to three ultra-bright white LEDs.

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Removing the ignition lock barrel

Posted by Jon Evans 19/01/2003 at 00h15

You might need to remove the lock barrel if you have a problem with it or you are changing your locks. If so, this is how you do it.

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Replacing switch bulbs with LEDs

Posted by Jon Evans 18/01/2003 at 23h59

Many of the switches in your car will illuminate when theheadlights are switched on, but most of them use tiny incandescentlight bulbs to provide the illumination. The problem with these bulbsis that they eventually burn themselves out. The repair procedure I’mgoing to describe here is to replace a burned out lamp with an LED.

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Electric rear blind repair

Posted by Jon Evans 18/01/2003 at 23h52

Symptoms

When the blind is retracted it makes a horrible grinding noise for about 10 seconds

Diagnosis

It seems that the electronic control unit for the rear blind simply applies power to the motor for a set period of time. When the blind reaches the end of its travel it is supposed to stall the motor until the control unit switches off the power. When the rear blind gearbox was disassembled it was discovered that the main gear had several stripped teeth, with the blind in the closed position. This meant that rather than stalling, the motor continued turning, causing the worn gears to make a loud clicking noise.

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Cleaning the electric mirror switch

Posted by Jon Evans 18/01/2003 at 23h50

It turned out that the mirror switch worked fine, but it was so nicely made that I thought I’d post some pictures anyway.

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Mustard-coloured relay repair

Posted by Jon Evans 18/01/2003 at 23h46

I started getting warning messages about the tail lights and sidelights, when there was nothing wrong with them. These are classic symptoms of dry joints in the mustard coloured relay.

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Thermostat replacement

Posted by Jon Evans 18/01/2003 at 23h40

Symptoms

  • temperature gauge not reading at 12 o’clock

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