Golf 93 GL 1.8 with failure

Could someone help me?
The golf goes out when lowering high (when stopping in a semaphore) on high works well to xecpion that with low gasoline it pulls a little, changing spark plugs and came out black, changed gasoline and air filters and put an injector cleaner to the tank.
I put that it could be a censor, since it disconnects and connects it one that has the opposite side of where the acceleration chicote is and the problem was corrected for about 15 days.


Thank you in advance a thousand

Do you stop dry?

That is, at once.

Or does tatata, tatata, tatata ... and is falling to k stop?

It is vital to know if it is an ignition problem or is a relief control problem.

do it always?

or only in cold, or only hot?

Try to specify a little more Aver that I tell you.

I think the same as Tráler, tries to specify a little more.

The "acceleration small" ??? I don't know what you mean.

Anyway, if black spark plugs come out, they are correct for the engine, they indicate two things:

1st burning oil

2nd mixing too high gasoline.

The difference between the first and the second is that when you burn oil, there are bark and inlays. And in the second it is fine and black soot, as dust.

The correct color must be gray or yellow brown in the lower part of the insulator next to the central electrode.

Regarding the symptoms you mention, I suppose that the injection will be more blamed than the ignition.

And assuming that this only does it in a hot engine, it can be a butterfly contactor, idle valve, motor temperature probe, flowmeter, and one hundred more things so please require a little more.