why is my car heater not working??

[Admiral208]

The stat i put it is rated at 89 degrees. The factory fitted one is 90 degrees. Ive read that there is a bleeding screw just behind the carb. Do you know if its easy to do? I might just let it heat up and leave the filler cap off. Do you think that will do the same thing?

 

Good luck with the MOT. I left mine about 6 weeks before i realized that it had expired. oops. Wont be doing that again!

[Sirbendy]

Carburettor? It''s been a few years now since I've owned a non EFi car, I'm afraid.

 

Both my MK3s and the MK4 are MPi, so no carburettor or equivalent manifold unit.

 

If you run it without the cap, you'll leave the cooling system under a no-pressure condition, which will lead to it boiling. Leave the cap on, let it run up until the fans cut in, maybe rev it a bit to push water around. Then off, let it cool, open the cap to release the pressure, top up if needed.

 

The MK4 failed the MOT, bless it. 2 advisories - 1 tyre at legal minimum (bothered, I have spares), 1 brake valve rusty (bothered, I said show me when I pick it up, when I get it on ramps I'll sort it out).

 

The Failure reason was the rear brake load adjusting valve, seized totally. Cost of repair is £18, I can have my car ready pre-4pm so I can pick up tiddler. Job done, and I'm happy with that. Last year was 2 new brake lines. Stupid non-copper standard fit junk.