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Discussion Starter #1
blimey where do i start.

Ok, occasional misfire on cold starts, so fitted new spark plugs and the problem went away.

Then heaters packed up so i had a new resistor fitted, problem solved.

Then, and this has been the bain of my life for a few weeks now, the heaters started blowing cold air at me. consulted a few people and they said check your water level which i did and it was low, topped it up and it was fine for a while then cold again, water low, topped it up and was ok, few days later same again so i went to the stealership and they told me it was a leaking radiator cap, winner i thought £15. I asked them to renew the coolant for me coz i d been putting water in it and didnt want the antifreeze to fail.

They did this for me and i drove it for a few days and cold air once again. spoke to my mate and he said there will be air in the system because they are hard to bleed properly, so i found the procedure for bleeding and followed it, worked for a while then i had to bleed it again and top up the water, and i must have done this 20 times.

Now the misfire is back there is alot of white smoke coming from the exhaust and i mean alot, i immediately thought head gasket, but i ve had a sniff test done and it came out clean and the oil is clean too.

So i m actually at a complete loss as to what to do next!

oh and just to add the car has never shown any signs of overheating and the needle get to halfway within 10mins or so and never moves.

Any help would be appreciated

Rigy
 

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The white smoke could be the cold outside temp, my 2002 520i is the same.

Check the expansion tank for any signs of a crack also thermostat housing.
 

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Discussion Starter #4
The white smoke could be the cold outside temp, my 2002 520i is the same.

Check the expansion tank for any signs of a crack also thermostat housing.
I was hoping for that to be the case, but misfire on cylinder 3 is playing on my mind too, cos if the gasket has gone I ll have coolant in the chamber burning up hence the smoke, but I ll check the thermostat and tank as well just to be on the safe side. With a bit of luck it's cold weather causing the misfire, and bleeding to much will be the coolant loss, time will tell

Thanks mate
 

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Discussion Starter #6
Just and update to where i am upto.

I ve had it confirmed that my problem is the head gasket, so i now have a few questions i hope somebody can help me with.

1. Why has my head gasket gone, when the car has never over heated?
2. should i replace anything else while its being done. i m replacing the water pump, themostat all gaskets and seals?
3. Related a little bit to question 1 but whats to stop it going again?

Any input/advice would be appreciated.

cheers

Rigy
 

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get the cylinder head pressure tested by a machine shop to see if it is cracked.
if the top of no.3 piston is cleaner than the rest but the gasket looks o.k. there is a good chance the head is cracked.
 

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So what is to stop it going again? If their any cause for a head gasket going? Is it costing you allot of money? Sorry about all the questions... I remember reading your initial thread and I am interested curious:)
 

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Discussion Starter #10
So what is to stop it going again? If their any cause for a head gasket going? Is it costing you allot of money? Sorry about all the questions... I remember reading your initial thread and I am interested curious:)
Well i bloody hope it doesnt go again mate, i m hoping with the new engine only doing 61k it will be sweet for a good few years now.

If i m honest i think the cylinder head had cracked before i bought it and it had the aditive you can get for a temporary repair which lasted me 8k miles before all my problems began.

Here is my pricelist upto now

Head gasket, full gasket set, seals, water pump and thermostat £500
Replacement recon cylinder head £300

Totalling £800, however, all these parts and now returned with a refund, basically because the whole engine just wasnt worth repairing.

So after all this i ve bought myself a new lump costing £720, its done 61k as opposed to my old fooked engine which had done 108k. Also the mechanic has told me that in terms of labour cost, the difference in fixing my cylinder head replacing all gaskets and seals is the same price as swapping the engine so fingers crossed i m better all round.

cheers

Rigy
 

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Head gasket

just read your thread my 735 has the same problem never been cooked but both head gaskets blown. cant even get a mechanic in northern ireland to look at it as it needs specialist tools. Any idea where i can pick up an engine.
 
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