My blazer does not turn on

Greetings friends of Casualida Someone who helps me I have a Blazer 99 Vortec Motor 4.3 which I have already changed all the sensors and I still still manage to turn it but if I did gasoline by the admission turns on and turns off to what is finished as I tell you I have already tried with another truck the injectors the coil the distribution and others

hello. You have to check the gasoline pump ... if you can measure pressure to the system to be 50 psi minimum. and the pump out of going to measure minimum 80 psi .. I hope it serves you .... anything let me know ....

Thanks friend for your advice I have verified that at the time of interacting it too but the clock that is in 60Psi

Greetings Ristaman, I would exchange the battery, when removing the switche should maintain the pressure for a long time, the Blazer engine is delicate with the pressure of the fuel, any low or lack of pressure below 60 prevents it from turning on, trying to remove the air filter and try to turn on, in some cases if it lights it is a sign of insufficient fuel pressure.

Hi Rustaman I think it is not a problem of the battery but of fuel return treats the pressure pressure without return to see if it turns on or at least it is maintained, you should also fix yourself if the injectors are working properly there are times that the tension that reaches the injectors is low and they do not work normally so it does not turn on the normal tension of an injector is 12V but if there are losses it can reach 5V Short obvious.