Going into reverse question..

[brokemerc]

1995 Bayliner Capri, 3.0/ alpha1/gen2... When I place the drive in reverse it enguages fine but my question is after that if I continue to move the throttle further back I get no increase in RPM's.. I get to a point where I can watch the roller on that switch ontop of the valve cover come out of the detent and the motor cuts off. I even tried to go further back quickly but it has the same effect,, motor shuts off. Is this normal or should you be able to build up some rpms in reverse.. I did an engine swap but was careful to not change anything when I hooked it back up..

 

[Don S]

Re: Going into reverse question..

Have you tried shifting forward, neutral and reverse, WITHOUT THE ENGINE RUNNING, to make sure the drive is engaging properly? Something may have slipped out of place when you put the drive on. It happens to everybody if you do it enough.
If everything is ok there, get your manual out (#14), go to section 2, and readjust your shift linkage.

 

[brokemerc]

Re: Going into reverse question..

Yes it shifts fine forward/neutral/reverse both without motor running and with engine running,,, I think it thumps a little hard going into gear but my idle is a bit high (1000 rpm).. In reverse how high approx should your rpm's go with the throttle full back?? I kind of figured it was an adjustment issue I just wasn't familiar with how that switch roller on the valve cover works,,, as soon as that roller comes out of detent the motor cuts off..

 

[Don S]

Re: Going into reverse question..

idle is a bit high (1000 rpm)..

No, your idle is a lot high, about 300 rpm.

In reverse how high approx should your rpm's go with the throttle full back?

Basically, WOT. It should open the throttle just as wide in reverse as it does in forward. The controls are designed to work both directions, depending on how the throttle is setup.

If, after going into gear, and you start giving it throttle and it killes the engine, then the shift cable is pushing even more when it shouldn't be.
Readjust it, you have done too much back there to think it won't change.

 

[fishrdan]

Re: Going into reverse question..

I agree with Don S, slow the idle down, then check the shift linkage adjustments, been there before.

My 73 3.0 idles smoothly at 500 RPM, but it took some fine tuning of the carb and timing to get it there. My Idle is a bit low but I use the main engine for trolling,,, well at least I used to before it sucked in some water...

One thing I found, (might be specific to older 3.0's, don't know if it's the same for Alpha's) if I swiftly move the shifter it will fall right into gear, but if I move the shifter slowly it kills the engine or the gears grind a bit. IE; throw the shifter into forward or reverse so it's in gear, but not accelerating the engine.

 

[JustJason]

Re: Going into reverse question..

yes... slow shifting is called granny shifting and your doing your boat no favors. The system is designed to go from neutral into gear in 1 swift firm motion.

 

[brokemerc]

Re: Going into reverse question..

Maybe that's it,, I do granny it both in fwd and reverse.. If not I'll check the adjustment after I get this idle down where it belongs.. Thanks..

 

[Don S]

Re: Going into reverse question..

When I place the drive in reverse it enguages fine but my question is after that if I continue to move the throttle further back I get no increase in RPM's.. I get to a point where I can watch the roller on that switch ontop of the valve cover come out of the detent and the motor cuts off.

Even when "Granny shifting" it shouldn't engage the shift interrupt switch when he moves the shift level further. It's either way out of adjustment, or the cable is binding for some reason.

 

[brokemerc]

Re: Going into reverse question..

Have you tried shifting forward, neutral and reverse, WITHOUT THE ENGINE RUNNING, to make sure the drive is engaging properly? Something may have slipped out of place when you put the drive on. It happens to everybody if you do it enough.
If everything is ok there, get your manual out (#14), go to section 2, and readjust your shift linkage.

Spent a few minutes looking at this throttle problem today. Tomorrow I plan on going step by step with the manual and adjusting all the cables. I've had this drive on and off probably 5 times do you think I should start with pulling it off and re-installing it (the drives been removed alot but i've personally not driven this boat yet)?? Like I mentioned it goes into forward fine and throttles up fine,, but when it's put into reverse the prop enguages fine but as soon as you apply more pressure back on the throttle the little switch comes out of the detent and the motor gets killed,, if I continue to move the throttle back then the throttle cable kicks in and it'll move to WOT.. Just thought i'd get some forum input before I dug into it.. Thanks..

 

[brokemerc]

Re: Going into reverse question..

Took my time and went step by step,, throttle works as advertised now in forward and reverse,, even have idle at 600 rpm...

 

[Haut Medoc]

Re: Going into reverse question..

Took my time and went step by step,, throttle works as advertised now in forward and reverse,, even have idle at 600 rpm...

We always like a happy ending......

 

[brokemerc]

Re: Going into reverse question..

Yep Thanks.. Only thing that is odd is that when I put it in forward I have about one inch of throttle travel before the rps start to build,, but in reverse as soon as it enguages the throttle is immediately there,, if i'm not careful and just throw it in reverse before I know it i'm over 2000 rpm,, which could proove scarey.. I may go through the reverse adjustment one more time..

 

[Haut Medoc]

Re: Going into reverse question..

I'd have to say that is in the throttle cable, not the shift cable.....