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Old 06 January 2019, 08:51   #1
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Country: UK - Channel Islands
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Boat name: Jazcabelle
Make: Ballistic
Length: 7m +
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300 hpdi engine diagnostics

Hi there,

Iím looking at a boat with a used 300 hpdi on it. Iíve got the diagnostic report here, but it looks like 2 cylinders arenít firing in the report.

If anyone has any experience with this type of motor, Iíd be grateful if you could give me any pointers from the report.

Thanks in advance Click image for larger version

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Old 06 January 2019, 12:04   #2
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Country: UK - Channel Islands
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Forgot to mention that the 2 cyl not firing issue could be the idle mode, which cuts 2 cyls on tick over. Same as my 150.
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Old 07 January 2019, 13:28   #3
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Country: UK - Wales
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Unlikely to be idle mode as non-firing cylinders are on the same bank.
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Old 07 January 2019, 21:19   #4
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Country: UK - Scotland
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Engine: Volvo KAD300/DPX
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Quote:
Originally Posted by Jon Tallis View Post
Unlikely to be idle mode as non-firing cylinders are on the same bank.
Not on my engine.

Looking at the engine from rear of boat none firing cylinders at idle are top left and center right. With the engine at idle, removing the plug caps will confirm whether a cylinder is firing or not. The sparks can jump a long way, be prepared for a belt!
The none firing cylinders at idle have neither a spark nor fuel.

As the helm control is put into gear, all cylinders should begin to fire. With the engine running, there is a definite change in note as the gear is engaged and the engine moves to 6 cylinder running. You could have done with an engine check while in gear rather than at idle only.

Idle speed is sensed and held by the engine electronics at approximately 700rpm whether in 4 or 6 cylinder mode.

If you have a none firing injector, it's fairly easy to check whether it's an injector fault or an electronics fault.
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Old 06 July 2019, 03:12   #5
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Did you get to the bottom of this, any outcome ?
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