Hi. I took of the cylinder head of my Cinq Sporting. It had issues that it would overheat for me. With or without the thermostat it would still overheat and the water pump was changed. Did a compression test and one cylinder was weak... The results when the cylinder head was removed, the head gasket was ok... Not thorn or anything but there was a weak point in the weak cylinder which the test had resulted.

I am fine with that, what is wondering me is that the valves are all black, even the surroundings of the values, Apart from that the cylinders are black too...

Is this normal?

Going to get the Head skimmed too.

seems pretty normal to me.

Ok ok... Thanks for your reply. Will it be difficult to clean so that I will tell my mechanic to do so if its not a big job...

You'll be cleaning and lapping the valves anyway, along with fitting the new seals.

Cheers

SPD

Thanks for the reply. I would be doing nothing, just paid my bills of this blessed car. My mechanic will do the cleaning.

davscer said:

Thanks for the reply. I would be doing nothing, just paid my bills of this blessed car. My mechanic will do the cleaning.

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Make sure he does!!!!!

No point in not doing the job properly.

Cheers

SPD

Fine with that. Tomorrow I will call him and check that he does it. I will upload some photos of the block and cylinderhead. I would like to know how......

beau said:

seems pretty normal to me.

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aww crap my cylinders are not black, what i done wrong?

1 and 4 run cooler than 2 and 3 which will explain some of the difference in colour but it does look like number 4 has been burning some oil.

Cheers

SPD

Do you think by skimming the head and fitting a new head gasket it will solve this issue of the cylinder burning some oil?
In fact when I started the car in the morning, White smoke use to come out from the silencer. The oil comsumption was high too. After 6 months I had to fill the car with oil as on the dipstick it would result to be low.

Thanks.

dave said:

aww crap my cylinders are not black, what i done wrong?

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you probably keep pouring acid down the plug holes

every head i ever take off its all carboned up alot inside.

beau said:

every head i ever take off its all carboned up alot inside.

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same here but cylinders normally all shiny

dave said:

same here but cylinders normally all shiny

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hit and miss i think, looking at pics my saxo vts was nice and shiney but escorts tend to be carboned up, but escorts tend to burn oil too. (1600 zetecs)

my cylinders even in standard form have always been pretty carbon free with just a nice tanned colour. guess it depends on what the car is used for (motorway runs usually break/burn carbon up) and fuel quality and even how well its looked after.

have you checked the bore on the weak cylinder for deep scratches or marks