1999 270 Sundancer loss of power and RPM's **HELP!!**

[exoticalex]

First of all, this is one of the best communities I have had the honor of joining!:smt038

Just bought a 1999 270 Sundancer with the 7.4l Merc. Took it out a few days ago for the first time and she ran perfectly. Had some friends come out today, and the boat started acting up. ugh!!

I was cruising at about 20knots with a depth of about 8ft in the delta - making a slight turn and all of a sudden my speed an rpm's started dropping slowly. I figured my trim tabs were out of wack. Evened them out got back on the throttle and all was good.

Well this happened a few times during the day. Feels like a fuel problem. Asked

Oh and when I start the boat I get 2 beep. No other beeps while running. Runs smooth too. I though when I started the boat the other day, I only had one beep. Maybe my mind is playing tricks on me. Is this normal?

I am thinking fuel filter...what do you guys think! I want to take her out again tomorrow

 

[Quint4]

Here is a trouble shooting list for low rpms....some may apply to you...good luck.

Engine Won't Reach Operating RPM (WOT). Check....

1. Fuel condition. Type and Octane possibly old fuel
2. Propeller pitch or diameter, damaged blades
3. Restricted fuel pickup tube or anti siphon valve Fuel System Test
4. Crankcase oil volume, high oil level can cause aerated oil and lifter collapse
5. Marine growth on hull and outdrive
6. Wrong gear ratio in outdrive
7. Restricted carburetor air intake (clogged flame arrestor)
8. Restricted exhaust system (broken exhaust shutters/flappers) in engine transom shield or drive
9. Poor cylinder compression Compression Test
10. Carburetor defective, or wrong type.
11. Fuel pump pressure and vacuum
12. Boat overloaded, improperly loaded, or improperly trimmed.
13. Engine Overheating
14. Engine timing and ignition system operation
15. Remote control cables and linkage for proper travel to open throttle plates fully.