Hello all- I have a problem with my recently acquired boat and it's engine vibration.
It's a Beta and the whole boat shudders on lower revs ie: tickover or up to 1100 rpm in or out of drive hot or cold.. It is nowhere near so bad when giving more throttle.but it is becoming a major issue. As a result, a fuel pipe sheared off recently, depositing 40 odd litres of fuel into the bilge.. It has done it for ages- even with the previous owner.
Apparently, the engine mountings were replaced recently, (although a liberal coating of diesel won't help) An engineer I respect suggested another mounting change to different ones but recent events suggest otherwise. After having some work done on the boat, I took it out and forgot to check the fuel supply was turned on. The boat spluttered to a halt after a couple of hundred metres, The boat would re-start, but conked out. The engineer came out and helped, and and bled a lot of air out of the system to get me going. Bingo- hardly any vibration!.
I saw the engineer later and said thanks for tightening the mountings on the original work and he said he hadn't touched them, leading me to believe this could be an air in the system issue. Other engineers had noticed there was no "return"? on the fuel lines and that this needed modifying.
This need sorting and I was going to get the mountings replaced, but is this a symptom of not having the "fuel return" in place? Sadly, everything is shuddering again following a grounding and a hefty throttle exercise, so I could do with some informed advice here.
Thanks in advance..........