How can i made maintenance for the injection part becuse when i start the car at morning i need to start it 5 or 6 times until it start without stop by it self

So the truck had been running well with fuses blowing until this morning ? Need vehicle info for wiring diagram .

try a new fuel filter if you haven't replaced it already. you may have a weak injection pump; does it crank for a long time before it starts?

No:5 is cam sensorEngine difficult to start - engine warm

Component check sequence

Electrical connections - engine/batteryAir in fuel systemFuel non-return valveFuel level in tank lowCondition of fuel/fuel filter/fuel pipesAir filter/intake system - blockageEngine mechanical conditionFuel injection pump timingAccess diagnostic trouble codesLow pressure fuel delivery pump(s) - some modelsLow pressure fuel delivery pump relay(s) - some modelsEngine coolant temperature (ECT) sensorFuel quantity adjusterInjectorsFuel injection timing solenoidInjection pump position sensorFuel injection pumpEngine management system - connections/wiringEngine control module (ECM) programmingFuel injection pump control moduleEngine control module (ECM)

this could be due to a miss adjusted fast idle screw on the carburetor. if u have a fuel inject system check the Throttle position sensor.

Your car is fuel injected and has a fuel pressure regulator valve that allows fuel to return to the tank, one sure sign that the valve is bad is that it allows all the fuel pressure to return to the tank so you must crank and crank which in truth is not what gets it going. You attempting to start it multiple times is turning the fuel pump on for @ 30 seconds. Untill you have the valve tested try turning the key to on, when the pump stops running (whirring or light buzzing sound) turn the key off and back on again. After a few times the pressure should be built up enough to start the engine.

Check your cold start curcit in the fuel injection. It puts extra fuel in to help it run when cold ( used to be a choke on old carbs) then when you restart it the engine has warrmed enough to run without the cold strt curcit.
If you just start is and don't move it just let it run will it clear up and not die?

IT COULD BE DIRTY PARTIAL STOPPED UP FUEL INJECTORS.STOP UP FUEL FILTER AND AIR FILTER.ALSO BAD SPARK PLUGS CAUSES MORNING STARTING PROBLEMS.

LISTEN CLOSE. THERE IS A PLUG ON PAN. REMOVE IT. WITH A SYRINGE TYPE CANISTER YOU NEED TO INJECT THE FLUID INTO IT UNTIL IT STARTS TO COME OUT. THEN CAREFULLY START VEHICLE AND INJECT ANOTHER 3/4 QUART UNLESS IT STARTS TO COME OUT OR EVEN A QUART.LET IT RUN FOR 5 MINUTES THEN CONTINUE TO INSERT UNTIL IT OVERFLOWS AND TIGHTEN THE PLUG BACK TO THE PAN. i WOULD ONLY USE AUDI VOLKSWAGON FLUID AND YES IT CAN RUN $14 TO $18 A LITER

check the state of your coolant temp sensor,fuel filter check spark plugs also

Hi hgudmund,
If you have fuel injection, (the diagnosis will be different than for carbs)....What I would suggest, as a first step, replace the fuel filter....

If there is still no improvement, this is how the pump should operate with fuel injection. the pump should start when the ignition is turned on and after a short burst, cut out, until the engine is cranked up, at which time the pump will run all the time ....

Checking the fuel delivery can be dangerous without the correct equipment for the injection system.....You'll need a fuel pressure test guage....The injection pressure should run at around three and a half bar, minimum....if it's lower than that, you'll need to replace the pump....

There are more tips that I can pass to you, but before I do please let me know how you get on with the first stages....and let me know if we are in fact dealing with injection or carburation?

best regards Johngee10