70hp w/ a mind of its own

[Blacksting]

I bought an '85 70hp johnny last year and it runs great on muffs but stalls on the bay when i shift into gear . but heres the weird part , when i drop it back into neutral , it starts back up on its own . i don't hear the starter pinion gear winding out as its running , but its certainly restarting the motor when it stalls . i had an issue w/ the selonoid so i took it off , drilled out the rivets and the contacts were spotless . reinstalled and it worked fine . ,... i removed the vro and was'nt able to get my hand underneath the oil nipple to plug it up . so i put a peice of duct tape over the hole . am i getting air in the fuel pump ? this puppy barks when she wants .,,, help!

 

[Bosunsmate]

Re: 70hp w/ a mind of its own

It could be a problem in the control box, the starter key barrell getting stuck on and then being shorted by the "starting in gear switch"

 

[Daviet]

Re: 70hp w/ a mind of its own

The starter drive isn't stuck in the flywheel is it?

 

[LongLine]

Re: 70hp w/ a mind of its own

I'm guessing an idle problem. When you put it in gear rpms drop. Set your idle up just a little & see what it does.

Tom B.
(LongLine)

 

[Blacksting]

Re: 70hp w/ a mind of its own

Thanks for the replys guys , but apon further inspection i took it out yesterday after i changed the gas filter and adjusted the stop screw to lower the idle and get her under load . well as bitter sweet as it was my shifter cable broke at the controls and the freyed ends of steel cable were being injected into the box and shorting out the ign. sw. . good pick-up Bosunmate . at least i know i don't have a ghost riding shotgun but i'm still baffled why she doesnt run going into gear . maybe the shorting out is causing this somehow ??? anymore thoughts are welcomed,....thanks again , you guys rock !!!,...

 

[Blacksting]

Re: 70hp w/ a mind of its own

Something else just came to mind . the primer selonoid w/ that little red handle . 1st of all it does'nt click when i push in on the ign. sw. . and when i start it cold i keep it foward to choke the motor . after warm up i move it straight down to run the boat . i've moved it back and then down and heard a click several times . so just how does this thing work ? and how do i check it ? the days are getting warmer and my wallets getting thinner . ,.......

 

[Bosunsmate]

Re: 70hp w/ a mind of its own

Good to hear its not some ghost ready to slime you.
Yep id still keep the shorting out in mind of that switch. Have you looked at the engine running with cover off?you could disconnect all the control leads and run it manually to see if that works.
The solenoid acts as a valve it allows a shot of fuel through under pressure from the fuelline (which is pressurized when you prime it)

 

[glenn property of pam]

Re: 70hp w/ a mind of its own

the red lever is meant to be back in line with the solinoid i think. to early to go look. if its manual open you wont hear the click when you push the switch. all your problems seem to be pointing at the controller and the cables. there are switchs on the motor that stop you from starting in gear etc. i think the controller needs to be checked for any more stray wires in the ignition switch and the cable replaced then take a fresh look at new problems you find

 

[Bosunsmate]

Re: 70hp w/ a mind of its own

Yeah id second the possibility of more wire in the switch
heres a forum today about a guy and his solenoid you could read up on Blacksting
http://forums.iboats.com/showthread.php?t=543480

 

[Blacksting]

Re: 70hp w/ a mind of its own

Good Post Bosunmate . ok , so i probably have a bad selonoid primer valve and need to check the connections and or replace it . i had the control box open the other day and didnt see any broken ends of the cable . Glen property of Pam , lol (***great name btw ) , what and where are these switches on the motor are you talking about . i checked the neut. stop sw. and its fine . are these switches tied into the shifting linkage ? a friend had me check the timing lever under the flywheel to see if it moves freely , it does , thats when i noticed shes' idling way too high . i found the cable on CL today for $20 , so after i change it , i'll try running it manually . now that i think about it , i can give it gas manually without all the throttle linkage , but at the carbs. , where the throttle cam meets the linkage for the 3 butterflies . more input needed !!! ,................***your family jewels are redeemable but i'm afraid you more than likely will have to give up the boat , its called divorce court ...lmfaooo

 

[Bosunsmate]

Re: 70hp w/ a mind of its own

Yep, you should be able to disconnect gear and throttle cables on the motor and try direct from there
You may want to try that in a barrel and also again with muffs so you can try with and without exhaust backpressure
NB itl still be idling high if you have still got the solenoid open or if it isnt closing properly even in manual mode. You can pull it off after start up and plug the other end so you dont get air ingress into the carbs to check that

 

[Blacksting]

Re: 70hp w/ a mind of its own

You may want to try that in a barrel and also again with muffs so you can try with and without exhaust backpressure
NB itl still be idling high if you have still got the solenoid open or if it isnt closing properly even in manual mode.

what does NB it mean ??? ,......rain here , so i'll try these methods as soon as it clears up .

 

[Bosunsmate]

Re: 70hp w/ a mind of its own

NB i think its another way of writing PS but maybe not, school was quite a few winters ago

 

[Blacksting]

Re: 70hp w/ a mind of its own

Ok, I assumed the ign. sw. was shorted out by the broken cable , but theres' no way it could've touched the terminals . But now i'm convinced theres a short somewhere cause the damn horn buzzer is going on when i turn the key . Tyvm Glenn p o p . I'm going to take the sw. out and start from scratch . But I'm back to the ghost theory why it was restarting when i shifted into neutral .

 

[Blacksting]

Re: 70hp w/ a mind of its own

This is just nuts . yesterday between rain falls a friend/mech. stopped by and i wanted to show him the ign. sw. and buzzer going on . But it did'nt . NOW the selonoid primer is working fine when i tried pushing in on the sw. . Evey time i turn around its something different w/ this motor . I still have'nt installed the shift cable and just wanted to keep you guys updated . He suggested try timing it to fix the original problem of stalling when giving it gas . But i don't know the degrees . Does anyone know for an '85 70 Johnson J70tlcos ? I read another post w/ a similar motor its' 19 degrees btdc . I added a pic of the controls i have before the cable broke to refer back to .

 

[Bosunsmate]

Re: 70hp w/ a mind of its own

Sounds like the solenoid and your first problem could all be to do with your ignition switch and connecting wires. Maybe a part of the wire cable out to the motor has being compressed and has broken the internal wires or they have being stretched. Maybe it happened when the shifter cables were stressed and frayed. If you have a digitial meter try testing each wire between the ignition switch and its connector plug outlet and seeing if the resistance is normal (ie small, ie the wire has good continuity).
If there was a stripped connection in the cable and the horn has a wire feed from the motor then that could cause it to be intermittent if it was getting cross feed from another wire in the cable.
A digital meter is quite cheap($10)
If that doesnt show anything id be putting some lock lubricating oil into your ignition switch.

 

[Blacksting]

Re: 70hp w/ a mind of its own

I have a meter and will check out these tests . I have the shift cable and will replace it , but it does'nt look like it comes right out . do i have to disconnect half the control box to get it off the pin ? if so , do i risk misaligning it when i put it back together ? after all said and done , its on to the motor and the stalling problem . i'm hoping a simple timing adjustment and i have the idle right . thanks for your input Bo, if i have any doubts , i'll just buy a new sw. and be done with it .

 

[Bosunsmate]

Re: 70hp w/ a mind of its own

I havent worked on that control box before but it looks like a clevis pin so it should either unscrew or have a cotter pin on the other side to undo (looks most likely a cotter pin type). Installation doesnt really require any alignment in the control box, just adjustment at the motor so the gears get put into gear fully. Forward N Reverse. Sometimes you have to turn the prop slightly to get it to select a gear, so check that is not stopping it selecting gear when adjusting.
Sorry Ive no info on the timing degs for it
Keen to hear what happens

 

[Blacksting]

Re: 70hp w/ a mind of its own

damn horn buzzer is going on
,....silly me , the knife connector from the vro was shorting out on the block. still raining here on and off and every time i take the cover off it starts to drizzle. cover it up, go horizontal on the couch and it clears up . south fla. is calling my name .

 

[Blacksting]

Re: 70hp w/ a mind of its own

ok , to finish up , got the pin out , it just slips in and out , changed the 'ghost' cable shorting out the neutral safety sw. , put it in a barrel, top cylinder was missing and had to clean out the carb bowls and high speed jets . she ran like a champ till the flywheel key sheared off . $4 later and a new key and i splashed her yesterday . thanks for all the help guys , have a great and safe summer.