Honda BF130 surging

delitubby · 26 February 2011, 17:02

I have twin BF130's on a 7.4m Rib.
My starboard engine started running erratically end of last season. Took it to a local boatyard (Honda dealer) and they can find no fault.
I've just put the boat back in the water and the same fault occurred first time i accelerated.
When accelerating the engine gets to about 2200 revs and then starts to lurch / surge. The rev counter goes from c.3000 revs to sub 1000 revs the back to 3000 and so on.
I have changed all filters and even tried a separate fuel source incase of fuel starvation but the fault persists.
The fault only occurs when under load.
Has anyone had this happen before? Any thoughts?
Thanks

jyasaki · 26 February 2011, 19:04

High pressure fuel pump, maybe? If you can borrow a fuel rail pressure gauge, you can get a reading while running. Might have to bounce that off the good motor to figure out where you should be.

jky

delitubby · 27 February 2011, 07:44

Any more Honda users had this issue i'd really appreciate the assistance!

Jizm · 27 February 2011, 08:40

May also be worth asking here

outboardtech · 27 February 2011, 11:36

Hi, Is your engine a carb model???? Im pretty sure it is??

delitubby · 27 February 2011, 16:57

Hi
It's a fuel injection model. appx age 2001.
Hope this helps

outboardtech · 27 February 2011, 18:59

Ok, ask your local Honda dealer if they put a pair of fuel pressure gauges onto it and if they did what was your fuel pressure??? Sounds like a fuel problem. Sounds like an injector, thats what I would tackle first if the high pressure pump is working and you have good fuel pressure at idle. Does the engine run rough @ idle

ADI · 28 February 2011, 20:19

its probably fuel or ignition, Are you willing to try some engine work yourself ?