1988 bayliner bass force 125 hard to get on plane

[pwilson]

i have a 1988 bayliner bass, rigged with a force 125.i bought the boat without a prop. i ordered a brand new vortex prop, which my mechanic installed. it is the correct prop by the book and is installed properly, but the boat will barely get on plane. the carbs are clean and i have plenty of compression. we can't find anything wrong.someone please help. the new prop is a 19 pitch.

 

[DJ]

Re: 1988 bayliner bass force 125 hard to get on plane

Your prop sounds like it is about the right pitch. Are you sure your engine is running properly?

 

[sony2001]

Re: 1988 bayliner bass force 125 hard to get on plane

Is the diameter 13.5"?? If so then you could be running on 3 cylinders not 4. There are not may aftermarket prop companies that can outfit your motor. Your store may have tried to made do with their line of props. I have the same engine.

 

[pwilson]

Re: 1988 bayliner bass force 125 hard to get on plane

the new prop is a 13.5 diameter.what is the correct prop for the 88 force 125? surely i can find a prop out there somewhere that will get the boat on plane, and run at top speed.

 

[bret walters]

Re: 1988 bayliner bass force 125 hard to get on plane

are the engine rpms high and the boat going slow or is the engine bogging down? what does your tachometer read? is the exhaust/trim tab installed on the lower unit just above and behind the prop.?

 

[sony2001]

Re: 1988 bayliner bass force 125 hard to get on plane

YOUR PROP IS PERFECT. They don't plane when running on three cylindres. Probable cause is CD module but do all the tests leading up to it.

 

[pwilson]

Re: 1988 bayliner bass force 125 hard to get on plane

the exhuast/trim tab is off the boat we have the bolts ordered. do you think that could be causing the probs? the rpms are low. the tack is not working properly, but i would say under 3000@ full throtle.<br />

 

[Hooty]

Re: 1988 bayliner bass force 125 hard to get on plane

After trying to get up on plane, shut the engine off, pull the sparkplugs and see if one (or two) is wetter than the rest. If it is, that's the cylinder that's not firing.<br /><br />c/6<br /><br />Hooty

 

[miloman]

Re: 1988 bayliner bass force 125 hard to get on plane

I agree with Hooty seems like a cylinder is not firing I checked my refrence and your proped right

 

[mrmuskie]

Re: 1988 bayliner bass force 125 hard to get on plane

What do you mean by plenty of compression? The secret to compression and performance is to have compression in all cylinders that is within 15% of each other and nothin lower than 100#. Below 100# and engine will run but badly. If you have acceptable compression and poor performance like that described, I would suspect, fouled spark plug first and bad coil module second. Be careful buying plugs to make sure you are using the plug designed for your engine. The wrong plug can cause major problems that cost big bucks to fix. I have the same engine and the prop you have is fine if you can get the engine to perform properly. Once you have the engine running properly, check your wide open throttle RPM's and you should be operating at 5500 RPM. If lower than 5500 you need to drop the pitch on your prop to 17, if over 5500 you need to increase your pitch to 21. Good Luck, your problem can be difficult to resolve but don't give up on your engine. Once you get it running properly you will fall in love with the performance. mrmuskie

 

[pwilson]

Re: 1988 bayliner bass force 125 hard to get on plane

my compression is 125 # in all 4 cylinders. thats is plenty.

 

[pwilson]

Re: 1988 bayliner bass force 125 hard to get on plane

O.K. Guys, i installed the missing trim tab. The boat seems to do a little better but, it is still very hard to get on plane.I don't think i'm losing a cylinder at high rpm's, because when (if) you get it on plane it runs very good. My tach is not working properly, but i'm getting alot higher rpm's with the trim tab installed. The engine is very easy to start and runs like new. I'm sure we have got it proped right. I just can't figure out what the problem is. Someone please help. Here is a list of things that have been done. <new prop 13*19> <carbs cleaned and checked> <new impleller> <lower unit checked new fluid> <compression checked good all 4 cyl> <new plugs> PLEASE HELP

 

[muskyone]

Re: 1988 bayliner bass force 125 hard to get on plane

is the boat waterloged take it to a scale and weigh it

 

[pwilson]

Re: 1988 bayliner bass force 125 hard to get on plane

Thats a good idea. What is the proper weight? It is a 18'9 Trophy Bass Bayliner.

 

[12Footer]

Re: 1988 bayliner bass force 125 hard to get on plane

Now that is a good posability, Muskie.<br />That hull has a lot of floatation in the bow, on both sides of the bait box. The decking in my B'liner Cobra is actually buldging-out from expanded, waterlogged foam. No biggie for me, as I plan on completely removing it all and re-decking when funds and time are available. But if the boat's bow squats low in the water, I'll bet Muskie1 is dead-on.<br />Also, check out the stringers wherever possable below decking, as the manufacturers did not coat them very well at all,and you may have some spongy stringers and bulkheads under there.

 

[pwilson]

Re: 1988 bayliner bass force 125 hard to get on plane

one other thing the boat has had a hydro foil wing mounted on it sometime in the past. there are 4 bolt holes where it was. do you think that could have anything to do with it? i know it would probably help if i installed another one, but it still should plane out without it.

 

[12Footer]

Re: 1988 bayliner bass force 125 hard to get on plane

Yes, the holes wont have any effect on it, as long as there is no cavitation, which you would've noticed right off the bat.<br />The stablizers do werk well, and are sure to help a little bit. But that hull should fly with all that motor back there. Mine has a mere 50HP Force on it. It is slow,waterlogged,and now in mid-revamping, but I could reach plane in less than 30seconds with the 50HP.

 

[Solittle]

Re: 1988 bayliner bass force 125 hard to get on plane

The trim tab will have an effect on how it steers but not how quickly it gets up on plane.<br /><br />Start the boat in the driveway with the cover off. Using an insulated plyers pull the spark plug wire off of a spark plug. If the motor slows down that indicates that the plug was firing before you took the lead off. If the motor does not slow down that indicates that the plug was not firing or firing properly. Repeat with the other cylinders. If all are firing next step is to rig a way that you can see how far the spark will jump. Spark should be a brigh blue and jump a 1/2" gap. Bet you find one or more is not firing. <br /><br />Prop should be OK as best we can tell at this point.

 

[pwilson]

Re: 1988 bayliner bass force 125 hard to get on plane

If my boat is "water logged" . Is there anyway to repair it? If not i may have a good Force 125 for sale. Hopefully, thats not the prob.

 

[pwilson]

Re: 1988 bayliner bass force 125 hard to get on plane

One more thing that might help.When the boat gets on plane and i trim it all the up it does pourpuss.I mean it bounces up and down. The only way to stop it is to trim it back down. I should have mentioned that befor.