Technical EOBD fault P0191, intermittent

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Technical EOBD fault P0191, intermittent

Oystein1963

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I have a intermittent engine problem with my Burstner, Fiat Ducato 2,8 jtd 2004.

Sometimes there is a "bang" from the engine (not loud) followed by grey smoke from the exhaust. Normaly this will not lit the engine light, but sometimes i does.
When the engine light is on there is low power from the engine (emergency mode). Stop the engine, wait for 30 sec and everything is normal.
Fault code is P0191, Fuel pressure reg. I have changed the regulator on the fuel pump (bosh nr 0281002500), but still the same.

Øystein
 
I have a intermittent engine problem with my Burstner, Fiat Ducato 2,8 jtd 2004.

Sometimes there is a "bang" from the engine (not loud) followed by grey smoke from the exhaust. Normaly this will not lit the engine light, but sometimes i does.
When the engine light is on there is low power from the engine (emergency mode). Stop the engine, wait for 30 sec and everything is normal.
Fault code is P0191, Fuel pressure reg. I have changed the regulator on the fuel pump (bosh nr 0281002500), but still the same.

Øystein

The grey smoke is unburnt diesel I'd guessing that one of your injectors is intermittantly sticking open dumping fuel into the cylinder and leading to low pressure error. get you injectors tested.
 
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