Hi
I have a 2014 BF225 and after it completes its fast idle, the motor begins to hunt / shutter .
On cold start at times , and when putting into gear first thing in the morning the motor surges and will stall.
Runs well above idle and all the way to WOT. But will hunt at idle , can feel it throughout the boat.
Below is the list of things that i have completed and still am having issues .
Replaced H02 sensor
Checked IAB coil resistance , 42ohms , ok.
Swapped IAC valve with a known good one.
replaced Fuel regulator.
Inspected screen on fuel injection rail and cleaned.
Inspected VST and HP fuel pump , all ok, screen clean on HP fuel pump. Float in VST ok .
Check valve proven from vacuum tank.
Performed fuel pressure check and fuel pressure good at 45PSI
HP fuel filter replaced, LP screen checked and replaced.
Checked all vacuum hoses for leaks and blockages, all ok.
Did find that the vent line off the VST to atmosphere was partially blocked, cleaned and is ok.
Pretty well stumped, the engine has 1050hrs on it .
Any help appreciated.
Cheers
Rob
I have a 2014 BF225 and after it completes its fast idle, the motor begins to hunt / shutter .
On cold start at times , and when putting into gear first thing in the morning the motor surges and will stall.
Runs well above idle and all the way to WOT. But will hunt at idle , can feel it throughout the boat.
Below is the list of things that i have completed and still am having issues .
Replaced H02 sensor
Checked IAB coil resistance , 42ohms , ok.
Swapped IAC valve with a known good one.
replaced Fuel regulator.
Inspected screen on fuel injection rail and cleaned.
Inspected VST and HP fuel pump , all ok, screen clean on HP fuel pump. Float in VST ok .
Check valve proven from vacuum tank.
Performed fuel pressure check and fuel pressure good at 45PSI
HP fuel filter replaced, LP screen checked and replaced.
Checked all vacuum hoses for leaks and blockages, all ok.
Did find that the vent line off the VST to atmosphere was partially blocked, cleaned and is ok.
Pretty well stumped, the engine has 1050hrs on it .
Any help appreciated.
Cheers
Rob