1990 bayliner Capri 19ft. with 120 hp FORCE L-drive

[Spiderman626]

WE NEED HELP FRANK!!! haha! We purchased a 1990 bayliner Capri 19ft. with 120 hp FORCE engine and we have the same identical problem! We purchased the boat not running and we seen water coming in the bottom cylinder, We dont have any history on the boat as far as the last time it ran. We replaced the exhaust, head and powerhead gaskets ( all the gaskets) Replaced Spark plugs and cleaned carbs, (we have 2 carbs on our engine) we finally got the boat to crank, Smokes really bad at first. (I figured this is normal for a 2 stoke engine when cold) then when we put the boat in gear it would always die. We adjusted the carbs to get a higher rpm. The boat runs now. Cranks well and sounds okay except we can hear it missing/skipping. we took our children out (4 of us) and the boat would not run fast enough to plain out. We assummed the prop was the reason. We took the boat to a prop dealer and he advised us that it should not have any play in it. (He installed a spacer (plastic washer) and tested the prop. He said that the prop was good!! Sooo.. We took it out on the water again... Same thing.. Would only go around 15 mph and 3,000 rpm's. The boat sounds like it wants to go, But, just cant get any speed out of it. we have tested the plugs while in motion, all were firing with a good blue spark. (so, I assume my coils are good?) I did notice rust inside the boot on the spark plug wires. We are changing the spark plug wires this week. Does ANYONE have a freaking clue of whats going on?? We really want a fising boat and a ski boat. right now, we just have a fishing boat. (trolling motor) Lol!! WE wanna go faster!!!

 

[Spiderman626]

Re: 85 Bayliner Capri - 125 Force Outboard - Very low speed

Re: 85 Bayliner Capri - 125 Force Outboard - Very low speed

Does my 1990 Bayliner Capri 120 hp Force engine I/O L Drive have a air filter?

 

[ezmobee]

Re: 85 Bayliner Capri - 125 Force Outboard - Very low speed

Re: 85 Bayliner Capri - 125 Force Outboard - Very low speed

You hijacked another thread. I moved your posts to a new thread. Feel free to post again in this thread with the symptoms you're experiencing and I'm sure one of the techs will be along shortly to help. Starting your own thread is the best way to go about things here to avoid confusion.

 

[Spiderman626]

Re: 85 Bayliner Capri - 125 Force Outboard - Very low speed

Re: 85 Bayliner Capri - 125 Force Outboard - Very low speed

Thank you... kinda new to this!

Jerry

 

[Frank Acampora]

Re: 85 Bayliner Capri - 125 Force Outboard - Very low speed

Re: 85 Bayliner Capri - 125 Force Outboard - Very low speed

While the block on the L drive is the same, I have never worked on one and controls may be different. HOWEVER: Frustrating as it may seem, ANY engine, if it has sufficient air, fuel, and spark at the correct time, will run to its full potential.

SO: What you are left with is diagnosing lack of power in a logical method. Anything else will just cause more frustration.

First step (because it is so simple): Check compression on all cylinders. This will tell you immediately the basic health of the engine. With low compression numbers, no matter how well the engine seems to run, it just will not produce full power.

Second step: Again, because it is relatively simple, check for spark on all cylinders. If a problem shows then investigate further. Since you already know that you have good spark on all cylinders, at this point, changing the terminations and boots will do nothing. Do it because you want to and prevent problems further on but if spark is as good as you say, don't expect a performance increase.

Third step: Check the entire fuel system from tank to carbs for partial clogs or inadequate fuel delivery. Do not mess with carbs unless a definite problem appears. (BTW: Adjusting carbs to adjust speed is just looking for trouble. Read the sticky in FAQs Synchronizing---)

Fourth step: Now start looking for the more esoteric problems--Understand though that These usually are a bit rare--Broken reed petals, driveline binding etc.

Unless a prop is totally mismatched to the engine/hull, It will not cause that much loss of speed. At 3000 RPM, the boat should get up on plane and be running more than 15 MPH. You need to check for weight distribution, water in the hull and on and on. If the boat is just running bow high and not breaking over into plane, ( and most will do this at around 18 MPH) it is digging a hole and the engine will never be able to rev up into its power band

 

[Spiderman626]

Re: 85 Bayliner Capri - 125 Force Outboard - Very low speed

Re: 85 Bayliner Capri - 125 Force Outboard - Very low speed

Thank you very much!! just one more question? Could it possibly be anything in the throttle cable or linkage??

Jerry

 

[Frank Acampora]

Re: 85 Bayliner Capri - 125 Force Outboard - Very low speed

Re: 85 Bayliner Capri - 125 Force Outboard - Very low speed

If the carbs are not opening fully, then yes, they could be restricting power. Try reading in FAQs synchronizing carbs and timing ot set them correctly.

 

[benfica311]

Re: 1990 bayliner Capri 19ft. with 120 hp FORCE L-drive

hey i have the same boat with the same problem and what i been doing to get by is have everyone on the boat stand in the front end of the boat untill it planes out. hope this helps for now let me know what the real fix is if you find out thanks.

 

[phet]

Re: 1990 bayliner Capri 19ft. with 120 hp FORCE L-drive

I have the same boat can't get power to the ignition and need help for ignition wiring too.. thank

 

[MickLovin]

Re: 1990 bayliner Capri 19ft. with 120 hp FORCE L-drive

Phet start a new thread this is 3 years old I doubt you will get a response.

 

[jerryjerry05]

Re: 1990 bayliner Capri 19ft. with 120 hp FORCE L-drive

Under the dash there is a fuse panel.
Check the fuses and go from there.