Palio Adventure Motor Failure

greetings.
The problem is as follows, I have a 2004 Adventure Palio when the engine is hot begins to fail, even when I accelerate the engine tends to die (the current will be cut) and when it does not go out it stops that only three cyclnders work, because it fits a lot, and the focus Engine focus on (only when it fails) since when you turn off and turn on the engine, the problem correct by itself).
The last service was done at the agency at 60 thousand (now it is 64mil) and verify the spark plugs and cables and seem to work well, (I did the test of disconnecting cable by cable when it is failing and there was no change)
please I appreciate all the help possible, thanks thanks

An interesting fact would be to know that engine is the one that equips your vehicle, but on the other hand the sensation that it was an electrical problem in the fuel system. The manifestation of this would be given under certain circumstances because the electronic system corrects the injection times according to a band, for a low fuel precion would widen the iny pulse. You can get to Umax. after which if the pres. It is low to begin to read that the Lambda Zonda generates low tension values ​​and there is no way to correct them with which there is an electronic problem.
There may be obtained filters. Pump spent due to dirty fuels, etc. With continuous functioning, the current consumed by the pump increases, this increases the work of work and therefore its internal resistance falling its performance.
PD: The pump has internal filters (aspiration) and external, check both, compare current consumed by it with a new one (approx. 4 AMP) If the current increases with the working time it is confirmed that something of what is referred to + above.

Luck.

Hello, how do you look, look at the Air Precion sensor MAP Sensor. This normally stops working, it is normally unusual with a hot motor, if that sensor does not do well the ignition Avse is outsourced and paired that 1 cylinder that stops working probes the following disconnect the file to the same MAP sensor and try if the same fault does if the spark plugs is not changed. Of factory, well I hope you solutions greetings

Thanks for your answers Maurog and Edosr
the engine is gasoline, 4cil 1.6lts. 16V The gasoline filter was already replaced, I will start with the simplest solutions (disconnect MAP, change spark plugs) Fuel pump filters are interchangeable or are they only washed? And is the pump located inside the tank? As soon as I do the tests I inform you of the results, thanks again.