I've owned a Lombardini 1404 for two years. The engine is 14 years old done 700 hours. Perfect apart from rough idle!! Cruises quietly at 3 litres/hour. Reputedly well built and reliable, should out last me.
Interestingly it is ok at very low rpm
, 6 or 700, bad up to 1000 when it is ok again. Recommended idle is up to 850 I think but if I set it at 1000, it is ok until put In gear
when the slight drop in revs brings back the rough idle. 1100 rpm
is a bit high for the twindisc gearbox
so I idle at 650?? then change gear
and get out of there as quick as I can (get revs up to 1000) Takes a bit of practise with twin controls.
It was worse to the point of feeling like a missing cylinder, but heavy dose of injector cleaner has made a definite improvement.
It is a great engine, easy to service
, can be run at max. revs all day (according to factory). A long term installer of these has always 'commented' on the idle of the 1404, but says the 702 (2 cylinder) is perfect??
Not sure if you realise the injectors are Bosch cam driven pump/injector units. You can hold them away from the cam to isolate a cylinder. Tune up of fuel delivery
and injector advance 'balancing' is a bit of a mission I'm told! Would love to hear from someone who knows about these injector systems.
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