Logo
FULL SITE MENU

Help please!

M

maa37maa

New member
ive got a 86 model chaparral with a 350 that has trouble planeing out... ive never had this prob before until this year... ive changed coil, plugs, plug wires, dist cap, rotor, fuel water sep, and put a new accelerator pump in the carb... still dont want to plane out! prop looks fine. it sputters a lil bit when i lay in to the floor. any suggestions at all? thanks!!!
 
List of possible causes of low WOT (Wide Open Throttle) rpm.

In no particular order

Engine Won't Reach Operating RPM. 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.
__________________
Don S.

Copied and pasted here from another website
 
Back
Top