Topic: Motor Alarm Help Please

This topic has 3 replies, 3 voices, and was last updated 6 years, 3 months ago by ctfford58.

Viewing 4 posts - 1 through 4 (of 4 total)

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October 2, 2019 at 8:15 am #678510

ctfford58
Participant

Hi folks I need help knowing what my issue is

Okay I finally get to take my boat out and I start getting a weird alarm. It sounds like it should be a solid tone but is broken up by a electrical connection. The alarm sounds like it is straining to come on and goes off intermittently. Not a repeating beep, beep, beep. The oil is indicator on the dash is illuminated whenever the alarm sounds. I shut the motor off and checked the oil and it seemed fine in the hull and on the motor. I restarted and there was normal 2 stroke smoke exhaust. when I started back to the ramp the motor seem to be down just a little causing the boat to be sluggish to get up on plane. Then all of the sudden it perked up and took off. The alarm continued intermittently back to the ramp. Then the boat didn’t want to load onto the trailer. Motor has always showed low water pressure at about 7psi but has a strong stream out the weep hole. I’ve changed the impeller a couple of years ago and it did not change the readout.

Motor is super low hours for it’s age. the dash readout says 97 hours and I’d say that is very close since I only take it out 3-4 times a year.

Here are the specifics on my boat and motor

1998 Sabre

1998 Mercury 150 EFI

Trophy 24p prop

Omega Dash BP100

October 2, 2019 at 10:21 am #678519

knuckle
Participant

The oil float in the reservoir on the motor could be stuck down. Or mine would alarm if that reservoir wasn’t full to the top. The loss of power could be as simple as fouled plugs. Just my 2cents.

October 2, 2019 at 11:01 pm #678553

Bass Cat Boats
Keymaster

Get into a dealership and have the oiling system and water cooling checked.

March 6, 2020 at 11:18 am #687304

ctfford58
Participant

Well sorry for not posting sooner.

Finally got the boat into a shop. Replaced water pump and a check valve that prevents gas from pushing it’s way back into the motor oil reservoir. Also had to locate a short in the alarm wiring that was causing the intermittent alarm sound. The shop decided to do a full tune-up and replace all hoses and remove and lubricate the steering cables. While all that may have been needed they did it without consulting me on price. OUCH! Bill was over $1,000… He said the idle was to high and adjusted that as well but could not get the dash to display the correct rpm

Took the boat out yesterday and no alarm and great water pressure. Boat seems to run really well at speed. It does idle way lower, almost to low. I’m afraid it will die at any second in neutral. Is there a way to correct the dash to more accurately display the rpms?

What is the correct idle rpm for a 1998 Mercury 150 EFI? Dash used to display about 800rpm. He said it was more like 1000rpm. Now it is in the 450rpm range but he says it is set at about 650.

Thanks for the input,

Here are the specifics on my boat and motor

1998 Sabre

1998 Mercury 150 EFI

Trophy 24p prop

Omega Dash BP100
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Viewing 4 posts - 1 through 4 (of 4 total)

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