Good morning gentlemen,
The big camping trip we had scheduled finally arrived last Thursday, and I had this old 1990 Blue Water looking pretty good for our trip to the lake.
Thursday she ran like a top all day. We spent and hour or so cruising around at various speeds, then pulled a two man tube for awhile too. The 19” prop worked just fine getting out of the hole. We anchored and swam, fished awhile, then pulled the tube some more. I was really pleased with the boat until we headed back to the dock that evening..... on our way back we ran about a mile or so at around 4200 rpms just fine, then the water flattened out and I ran it WOT for a couple minutes. No problem, she purred like a kitten...... I had backed off to about 4000 rpms, Then it just stalled out.... just like someone shut off the gas flow....
ok.... more info needed here. This 4.3 has a 2 barrel carb that was just put on the engine before I purchased the boat earlier this summer. It’s got an electric fuel pump that is obviously auto grade and needs to be changed out to a marine grade with a fuel water separator. But for now it is functioning properly, or was until this came up. I’ve probably only got 10-15 hours run time on this motor since I bought it, and it’s fired right up every time, the idle adjustments running about 6-700 rpms.
ok.... day two I took her back out, and she didn’t fire right up like usual. I needed to use the throttle only button and give it more gas to get her started. But start she did.... ran smoothly until accelerating past 3000 rpms. Then it would stall out. If I was quick enough bringing the throttle back down, it continued to run ok. If not, it would die completely.
I tried both slow acceleration, and quickly pushing it to the stop. Both ways ended up stalling out, but I could get the rpms up to 4000 for a few seconds at faster acceleration pushing it all the way quickly. She was just about out of the hole a few times, but stalled out every time.
so we found a little lagoon to anchor in and I pulled the engine cowl. It was taking more throttle to get it started by now, but she ran just fine out of gear at all rpm levels, but was idling a bit rough at low rpms. Up at 800.... purred like a kitten.
could you guys give me some suggestions where to start trouble shooting this? I think it’s as good a time as any to upgrade the fuel pump to a marine grade electric pump and get a water separator installed. But I’m not convinced the fuel pump is the issue the way it runs so well out of gear.
id appreciate any help you could give me on this..... thanks Kirk
here is a photo of the motor. https://photos.app.goo.gl/tPsp75gwuJwVNco19
The big camping trip we had scheduled finally arrived last Thursday, and I had this old 1990 Blue Water looking pretty good for our trip to the lake.
Thursday she ran like a top all day. We spent and hour or so cruising around at various speeds, then pulled a two man tube for awhile too. The 19” prop worked just fine getting out of the hole. We anchored and swam, fished awhile, then pulled the tube some more. I was really pleased with the boat until we headed back to the dock that evening..... on our way back we ran about a mile or so at around 4200 rpms just fine, then the water flattened out and I ran it WOT for a couple minutes. No problem, she purred like a kitten...... I had backed off to about 4000 rpms, Then it just stalled out.... just like someone shut off the gas flow....
ok.... more info needed here. This 4.3 has a 2 barrel carb that was just put on the engine before I purchased the boat earlier this summer. It’s got an electric fuel pump that is obviously auto grade and needs to be changed out to a marine grade with a fuel water separator. But for now it is functioning properly, or was until this came up. I’ve probably only got 10-15 hours run time on this motor since I bought it, and it’s fired right up every time, the idle adjustments running about 6-700 rpms.
ok.... day two I took her back out, and she didn’t fire right up like usual. I needed to use the throttle only button and give it more gas to get her started. But start she did.... ran smoothly until accelerating past 3000 rpms. Then it would stall out. If I was quick enough bringing the throttle back down, it continued to run ok. If not, it would die completely.
I tried both slow acceleration, and quickly pushing it to the stop. Both ways ended up stalling out, but I could get the rpms up to 4000 for a few seconds at faster acceleration pushing it all the way quickly. She was just about out of the hole a few times, but stalled out every time.
so we found a little lagoon to anchor in and I pulled the engine cowl. It was taking more throttle to get it started by now, but she ran just fine out of gear at all rpm levels, but was idling a bit rough at low rpms. Up at 800.... purred like a kitten.
could you guys give me some suggestions where to start trouble shooting this? I think it’s as good a time as any to upgrade the fuel pump to a marine grade electric pump and get a water separator installed. But I’m not convinced the fuel pump is the issue the way it runs so well out of gear.
id appreciate any help you could give me on this..... thanks Kirk
here is a photo of the motor. https://photos.app.goo.gl/tPsp75gwuJwVNco19