S3silver
New member
My 2008 BF150 25” ran great until the last time on the water. Halfway through the day it will not rev pass 2000 rpm. Got home and changed the following:
-new Quicksilver bulb and external fuel lines
-new low and high pressure fuel filters
-new mid shaft bushing
-took apart and inspected vst - was super clean
-cleaned the filter above the vst
-spark plugs look great
Took it out today and still will not rev over 2000 rpm under load. With it in neutral it will rev all the way to 6000 rpm and hold it as long as you leave it there. With the prop halfway out of the water, it will rev all the way to 6000, smooth and strong. Under load, it just poops out and will not rev over 2000 rpm.
I’m stumped. It starts right up, idles smooth, shifts smooth, goes in forward and reverse smooth, and will putt around all day without issue at the limited 2000 rpms. Receiving good fuel all the way up the vst and high pressure fuel filter.
The only things left I can think of:
-high pressure fuel pump
-compression check (if this the issue, will it still idle smooth and rev to 6000 strong and smooth without load?)
Hoping to receive some good troubleshooting from the more skilled and experienced folks from this forum, which has taught me a lot so far. Thanks in advance.
-new Quicksilver bulb and external fuel lines
-new low and high pressure fuel filters
-new mid shaft bushing
-took apart and inspected vst - was super clean
-cleaned the filter above the vst
-spark plugs look great
Took it out today and still will not rev over 2000 rpm under load. With it in neutral it will rev all the way to 6000 rpm and hold it as long as you leave it there. With the prop halfway out of the water, it will rev all the way to 6000, smooth and strong. Under load, it just poops out and will not rev over 2000 rpm.
I’m stumped. It starts right up, idles smooth, shifts smooth, goes in forward and reverse smooth, and will putt around all day without issue at the limited 2000 rpms. Receiving good fuel all the way up the vst and high pressure fuel filter.
The only things left I can think of:
-high pressure fuel pump
-compression check (if this the issue, will it still idle smooth and rev to 6000 strong and smooth without load?)
Hoping to receive some good troubleshooting from the more skilled and experienced folks from this forum, which has taught me a lot so far. Thanks in advance.