problems on

Hello friends, I need if you can help me my uto is a Chevrolet Monza year 93 and the problem is that when turning it on, although it starts after a while because it stops injecting the mechanic, he told me that it was an electrical problem I made a scanner and does not throw failure ... I change the distribution cables .... I also change the coil of the distributed the cover. Help ...... Atte Pato

Good, I don't know what you say or I find out, you first say that you have an injection failure and then conceded.
If the failure is on, I tell you, the car has a spark in the spark plugs? If so, it does not have to fail. If it is intermittent? ETCES You may have a failure in the low current feed (12 v) that is the one that generates the high current for both the high coil, until the distribution of the spark in the spark plug, if you do not check the low circuit you do not finish checking the concession system (possible causes, false contacts, alarm failure or anti -theft system if you have it or any electronic component).
Well, as you have changed half a car you are already missing ........... is a joke.
I recommend a test with an oscilloscope, with this machine you can verify in real time the jump of the spark, generation, time, and compare the different cylinders to whether as the tuning of the car, you can also check the low system of the touched.
You also check the injection injection times that have to follow the order of convenient.
If the failure is fuel, mainly, buy that you have the recommended pressures according to manufacturer throughout the fuel circuit, (eye that has the car gas).
Well I hope my contribution serves you.