D3 start up problem

[gcburch]

I have twin D3-190's and they have become quite hard to start up from cold, taking 4 to 5 times to turnover the engine until started ok. Once the engine has been running for a few minutes the engines start up with no problems? the engines are pretty new having done only 30hrs. any ideas greatly appreciated, Geoff

 

[Nigelhg]

Check for a diesel weep at your lift pump.....could be air getting in.

 

[DAVIDO]

Assuming from the hours you have not had them long? It could be as simple as the ambient temperature dropping, diesels will always be slower to start the colder it gets.

 

[Peanuts]

Hi
As you mention you have twin D3's so the longer starting time is the same on both? The fact that they start does tend to point that the problem if you want to call it that is common to both so I would not touch/alter/mess about with anything and just put it down to as already mention the ambient temperature (cold and damp).

Steve

 

[spannerman]

I don't know about D3's we don't get them in our shop as we sell bigger engined boats, but I know on the larger electronic diesels its part of the software for the engines to crank for several seconds before injection statrts, this is to get the air temp up before injecting fuel to help reduce smoke on start up. This delay is in proportion to ambient temperature, so pehaps now its colder you are more aware of it.

 

[BartW]

our boat also has twin D3-190, new from june, but now over 140hrs, never had starting problems except ones when a retro fitted T-connection in the fuel drain sucked a little air,
but EVC display should show it.
Ambient temperature might be a problem, our boat is on a trailer, and inside when it is cold.

cheers
Bart
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[davedpc]

Have always found when its cold a quick dab on the link switch always does the trick.

 

[volvopaul]

The engines will crank for some time till fuel pressure in the common rail is high enough to inject, also the engine cranks with no fuel at first till the cylinders are warm, the time delay is in the ecu so if its turning over for a really long time then you may have air in the system, if you have no fault codes showing up then there is nothing to be alarmed about.