I have a Punto 16v, and had to change the admission, (plastic water connection for the heater matrix broke)
I noticed that there is a lot of black sooth around the valves.

Should I just leave it be, or is there a way to clean it a bit without disassembling the engine? Like spraying it with brake cleaner?
It doesn't look too good, but I don't want to make it worse by attempting to clean it.


Pics attached

those are intake valves? They shouldn't be so dirty, how much blow by does your engine produce? Try installing a catchcan, injectors spray fuel on the intake valves so they should clean itself after the blow by problem is solved.

Try doing an "italian tune up" but tbh I wouldn't try to clean it with break cleaner, if the carbon buildup drops into the cylinder you can have much bigger problems

I am not sure about the blow by but it does burn a bit of oil.

Anyone knows what this is? I was thinking it could be a ground point. But it seems a bit like a sensor?

crankshaft said:

I am not sure about the blow by but it does burn a bit of oil.

Anyone knows what this is? I was thinking it could be a ground point. But it seems a bit like a sensor?

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It's the knock sensor your looking at. Should really get some wiring tube going around there to protect the wires.

Thank you.
Yes I remove a bit of the plastic conduit that was around the reverse light switch, and put it there.

AnteLo said:

those are intake valves? They shouldn't be so dirty, how much blow by does your engine produce? Try installing a catchcan, injectors spray fuel on the intake valves so they should clean itself after the blow by problem is solved.

Try doing an "italian tune up" but tbh I wouldn't try to clean it with break cleaner, if the carbon buildup drops into the cylinder you can have much bigger problems

Click to expand...

I don't know what an italian tune up is

In any case, about the blow by, I reved up the engine, and I don't notice a high increase in the air coming out of the cart positive ventilation. Actually it seems higher when idling then at 1800 rpm.

You literally just have to google what an Italian tune up is. If it's using oil it may have worn out valve stem seals

Yeah the oil level seems to drop a bit to fast. I got maybe 7000 km and the oil got below minimum. I am using what fiat recommends, 10W-40.

crankshaft said:

Yeah the oil level seems to drop a bit to fast. I got maybe 7000 km and the oil got below minimum. I am using what fiat recommends, 10W-40.

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Yeah definitely look into the oil consumption issue