5.7 volvo

[chriscraftchris]

5.7 volvo won't rev over 4000 rpms other than that it runs perfect

 

[Bondo]

Re: 5.7 volvo

5.7 volvo won't rev over 4000 rpms other than that it runs perfect

Ayuh,.... Welcome Aboard,.... Yer answer is No doubt in this quote, found in Don'S Adults Only section, at the top of this forum,....

Here is a 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.

 

[betroncm]

Re: 5.7 volvo

You may need to change your prop for a lower pitch. And everything Bondo posted above.

 

[Slip Away]

Re: 5.7 volvo

If it does not get over 4,000 RPM, it does not run perfect.

 

[jerryjerry05]

Re: 5.7 volvo

Double post

 

[jerryjerry05]

Re: 5.7 volvo

Welcome Chris,
A bit more info please?
Other than the 5.7 you gave no other info.
What motor/drive combo?
Boat stay in the water?
Is it the original prop?
Any work done?
How much stuff??? on board?
How much load?
How about speed?
Size of the prop?
Fill out the profile location.
You might be close to someone who can help.