CarewPat
Active Member
Hi all,
I've tried searching around and I haven't come across a similar issue so I'm hoping for a bit of guidance. I have a 2000 Islandia 240HP EFI
I'm having an issue with this boat. The issue is two fold. First, it takes some time to get on plane (sometimes). At WOT, the engine revs to 6700-6800, but takes between 10-50 seconds to get on plane. As it gets on plane, the RPMs drop as speed increases. It is inconsistent, but it seems to settle at 5500 RPM at WOT on throttle. It also doesn't run as smooth once at that RPM on plane. Is this inverse relationship between RPM and speed on plane normal? Top speed with 2 adults and a cooler was 30ish which seems slow to me.
What could be happening to cause this? At first I was thinking cavitation, but that would be consistent all the time. It wouldn't just go away once on plane would it? It seems to me that if the RPMs were at 6000-6200 on plane we would be achieving normal top speeds. Then I was thinking maybe a cylinder is dropping out under high load, but it stays at high load at WOT without much fuss, it's only on plane that issues occur. For reference, I have checked fuel pressure at WOT and it is around 38. I have replaced the spark plugs. I have checked the coils with a spark gap tester. All did around 11mm as per the specification in the manual. Ground checked the coils. Spec is .2 ohms. All were at about 1. This was out of spec, but all gap tested good. I resistance checked the triggers which appear to be relatively new. They were actually below spec. Manual calls for 1100 to 1400 ohms. With a Fluke meter, they all read 1000.
Hoping for some direction. Hopefully someone has experienced similar symptoms.
Thank you
I've tried searching around and I haven't come across a similar issue so I'm hoping for a bit of guidance. I have a 2000 Islandia 240HP EFI
I'm having an issue with this boat. The issue is two fold. First, it takes some time to get on plane (sometimes). At WOT, the engine revs to 6700-6800, but takes between 10-50 seconds to get on plane. As it gets on plane, the RPMs drop as speed increases. It is inconsistent, but it seems to settle at 5500 RPM at WOT on throttle. It also doesn't run as smooth once at that RPM on plane. Is this inverse relationship between RPM and speed on plane normal? Top speed with 2 adults and a cooler was 30ish which seems slow to me.
What could be happening to cause this? At first I was thinking cavitation, but that would be consistent all the time. It wouldn't just go away once on plane would it? It seems to me that if the RPMs were at 6000-6200 on plane we would be achieving normal top speeds. Then I was thinking maybe a cylinder is dropping out under high load, but it stays at high load at WOT without much fuss, it's only on plane that issues occur. For reference, I have checked fuel pressure at WOT and it is around 38. I have replaced the spark plugs. I have checked the coils with a spark gap tester. All did around 11mm as per the specification in the manual. Ground checked the coils. Spec is .2 ohms. All were at about 1. This was out of spec, but all gap tested good. I resistance checked the triggers which appear to be relatively new. They were actually below spec. Manual calls for 1100 to 1400 ohms. With a Fluke meter, they all read 1000.
Hoping for some direction. Hopefully someone has experienced similar symptoms.
Thank you
