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Author Topic: fuel consumption difference between twin rig 300s  (Read 112 times)
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Posts: 3

« on: March 12, 2018, 08:13:18 pm »

2014 300v23ld twin rigged verados

I have twin 300s rigged with power steering on my stb engine and port engine the slave via a tie bar. Both engines same hours, 1550. Stb engine is right hand rotation port side letfthand (obviously).
There is a large difference in fuel consumption between the 2 engines with stb side using up to 15-20L per hr more than port side at cruising revs (3900-4100rpm). If opened right up there is well over 20l per hr difference. At idle the difference is negligible an nothing to be concerned with but as a commercial operator that sort of difference really hurts. With 4 clients myself and crew, 700L of fuel and fully rigged for gamefishing I can have one side using 60L per hr and the other using 40L! We fish about 240 days per year so this really adds up.  Both engines are religiously maintained and serviced by myself (Im a qualified marine engineer) and a very capable outboard tech when its over my head or specialty tools are needed. Being a commercial vessel and operating in the remote Kimberly region of Western Australia we have no support so we  are very big on maintenance and looking after our engines.
I have done all the trouble shooting I can think of and cant come up with any explanation other than maybe powering the power steering is sapping power from the stb engine.

If anyone else has had this issue or could shine some light on my problem I would greatly appreciate it.

Thank you your time.

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Posts: 4

« Reply #1 on: March 15, 2018, 05:06:09 pm »

I have the same issue with a pair of 2006 250's.  No insight?
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