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Old 24-08-2017   #1
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Chile 
Fiat doblo doesn't start

Hi. I have a fiat doblo 1.3 diesel multijet, 2007. The engine is Z13DT
I repaired the engine, so i disassembled everyting, common rail, diesel
Pump, pistons, chain. My problem comes when now i assemble all the items, but the engine doesnt want to run and i dont know why. The car was for more than 2 months without battery, maybe the ECU got any trouble. Please help. I attached the dtc' codes. I have checked the relays and the fuses. I dont know what to do?
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Old 24-08-2017   #2
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Re: Fiat doblo doesn't start

This is a tricky one, as you've had the engine apart, it could be anything!
But try a few basic checks.

Is the fuel getting to the injectors?
If the rail, injectors and pump have been off it could have airlock in the fuel system.
The fuel system is a closed circuit from cold and can't vent out any air.

The fuel from the injector spill off goes around and around the pump/filter and rail until it detects some heat, only then does the spill off get diverted back to the tank where it can vent.

Crack open the union on the last injector on the rail (furthest from the pump) and crank the engine in short bursts until it start spitting fuel out of the open union, then tighen it back up.
This should allow all the air in there to escape.

If after a few cranks there's no fuel at the open union, you'll need to check how/if it's lifting the fuel from the tank to the high pressure pump.


The ECU needs to detect crank and cam angles to timing the fuel injection.
As the timing chain have been off, is the cam and crank aligned correctly when reassembled.
Also is the crank sensor working, if it can't work out when each cylinder is at or approaching TDC, it'll not fire the injectors.
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Old 24-08-2017   #3
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Quote Originally Posted by Marco Escobar View Post
Hi. I have a fiat doblo 1.3 diesel multijet, 2007. The engine is Z13DT
I repaired the engine, so i disassembled everyting, common rail, diesel
Pump, pistons, chain. My problem comes when now i assemble all the items, but the engine doesnt want to run and i dont know why. The car was for more than 2 months without battery, maybe the ECU got any trouble. Please help. I attached the dtc' codes. I have checked the relays and the fuses. I dont know what to do?
Hi. Look in the panda section..

There are some great threads regarding nostarting 1.3 mj engines
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Old 24-08-2017   #4
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Chile 
Re: Fiat doblo doesn't start

Thank you for your quick answer.
The cam and crank are aligned correctly because they have 2 slots on the cam and one hole on the flywheel.
The electric fuel pump on the tank works because i took off the union on the high pressure pump entry and it spill off a lot of fuel.
When i disconnected the return line from the top of the inyector, while i crank the engine it does not spitting fuel out but if i open the union on the exit of the high pressure pump while i crank the engine it spitting a little fuel out.
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Old 24-08-2017   #5
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Re: Fiat doblo doesn't start

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Old 24-08-2017   #6
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Re: Fiat doblo doesn't start

Quote Originally Posted by varesecrazy View Post
Hi. Look in the panda section..



There are some great threads regarding nostarting 1.3 mj engines


Panda section? Do you have the link? I'm a new user
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Old 24-08-2017   #7
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Chile 
Re: Fiat doblo doesn't start

Quote Originally Posted by Goudrons View Post
This is a tricky one, as you've had the engine apart, it could be anything!
But try a few basic checks.

Is the fuel getting to the injectors?
If the rail, injectors and pump have been off it could have airlock in the fuel system.
The fuel system is a closed circuit from cold and can't vent out any air.

The fuel from the injector spill off goes around and around the pump/filter and rail until it detects some heat, only then does the spill off get diverted back to the tank where it can vent.

Crack open the union on the last injector on the rail (furthest from the pump) and crank the engine in short bursts until it start spitting fuel out of the open union, then tighen it back up.
This should allow all the air in there to escape.

If after a few cranks there's no fuel at the open union, you'll need to check how/if it's lifting the fuel from the tank to the high pressure pump.


The ECU needs to detect crank and cam angles to timing the fuel injection.
As the timing chain have been off, is the cam and crank aligned correctly when reassembled.
Also is the crank sensor working, if it can't work out when each cylinder is at or approaching TDC, it'll not fire the injectors.


Goudrons, i answered you below
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