79 chrysler 70hp outboard hard start

[brokenwrist]

Hey guys, Just picked up last week my own very first boat. Boats and working on them is nothing new to me. I picked a 79 striper with the original 70hp skier outboard. Finally got some nice weather to start tinkering with it, and I noticed right away that unless I squirt some fuel into the carbs the engine will not start. This is even after priming the carbs and fuel system with the priming bulb. Once started though it run mostly perfectly. Has some minor issues but those to be worked out later. I have gone crazy today, trying to figure out why the outboard will not start, only thing I can come up with is the needles are plugged or the floats are bad. Any insight would be awesome. Happy boating.

 

[jerryjerry05]

Welcome.
IF???? It's running after it starts then the needles and floats are not bad.

You using the choke correctly?
You squeeze the bulb till firm.
Turn the key and as you turn push in the key and the choke activates.
You'll hear a click when it activates.

 

[SkiDad]

also make sure you try starting it in fast idle - it's either a button on the throttle that put it into neutral and then push the throttle forward - some boats you pull the throttle base toward you and then forward. my boat always starts this way when cold very easily.

 

[brokenwrist]

yep yep and yep. Just on the off chance today, I had watched the carb sync and timing video like 4 times already, and dived in to check the timing. Carbs were mostly synced. Ignition timing how ever was off some ways, reset all and it fired up within 3 turns of the key. Someone had been into my engine previously and I seriously question their knowledge of chrysler/force engines. Whats the idle speed supposed to be? It will NOT idle below 500 rpm, and even at 500 the engine shakes so hard it feels like, it's trying to shake the boat apart. 600-750 it runs smoother than a baby's hairless butt.

 

[jerryjerry05]

Idle in gear in the water,
​750-800 about 1100-1200 on the hose.
The air screws might need adjusting?
Start at 1 and 1/2 turn out from lightly seated.
Then go to the stickies to finish the job.
How did you set the timing? Static or dynamic?

 

[brokenwrist]

timing was set static, and a complete thorn in my side. With throttle at idle it's sparking at tdc, at full throttle its sparking at 32 degrees. Somehow this does not seem right to me. But the engine runs better now, then when I got it and got it running. I know for a fact someone at some point has been inside the entire assembly as theres tool marks on virtually every nut and bolt, and the clamp for the choke solenoid was a little loose.

 

[Nordin]

Sparking at or nearTDC with throttle in idle position is absolutly right and at 32 dgr at WOT seems good too.

If you have Motorola CD ignition with distributer you can set the timing static and it will perform really well.
I would suggest you to set the timeadvance to 30 dgr BTDC at WOT and then set the idlespeed to 750-800 rpm in gear and in water.

If you have the Prestolite CD ignition without distributer you have to set the timing dynamic. You can set it roughly static by setting the advance to 28 dgr BTDC, using the starter.
The you have to fine tune to 30 dgr with a timinglamp at WOT in water.

 

[brokenwrist]

Tomorrow I'll pull the hood and set the timing. I was in process of washing it up today.