Volvo 8.1 OSI-DF Random misfire

The Main Exchange

Latest, advised to remove the injector and coil harnesses and have those checked. Pins removed from plastic connectors and check for wear or bad connection. Refit harness then diacom hooked up to engine and take some logs etc... 

Michael T

Maddening! Good luck this time! 

The Main Exchange

Thanks MT. Hopefully this will find something. We are having some pretty good weather so the boat looking sorry for itself in the slip is not working!! Hopefully this thread may help someone else in the future.

F1100

Have you checked the coils with a multi meter yet? Have you checked the injectors yet with a multimeter?

The Main Exchange

@F1100 new coils, plugs, wires. Ran totally fine on Tuesday going to check the harnesses and the injectors tomorrow. The problem was there from cold before now seems to be only when hot on Sat. This is getting old but going to finish the ohm checks tomorrow. 

The Main Exchange

We have ran the boat 2 times with no faults so I guess it could've been a coil or injector harness connection. Thank you for all your help.

MarkB

Sounds good. As they say "hold thumbs" that it keeps working!

Michael T

Hopefully the end of a frustrating journey! 

The Main Exchange

No kidding hopefully this post may help someone in the future.