QD-20 Maiden Voyage

Beefer

Lieutenant Commander
Joined
Aug 4, 2008
Messages
1,737
Had my maiden voyage today on my 8'6" Achilles and 1959 Johnson QD-20 10hp. Not so great. :( So I come to you seeking advise...

I spent most of the earlier part of the day test running the Johnny on the kicker bracket of the main boat. Was able to start it pretty quickly/easily, but it was dying at lower rpm's (about below half throttle). I finally got it to idle at low-ish rpm's, and decided to take the test ride before dark set in. Upon first leaving the dock, she stalled about 25yds out, but restarted right away. Got going again, and seemed to be going fine. Got used to the steering/handling, and got up on plane. Went out to the main channel (not really a channel but a small bay off the ICW), and headed north. Wind was out of the north, so I figured it would blow me in the general direction of home if need be. She died again about 1/8 mile away, and restarted. I decided to head back, as she needs some work still. Never made it. Died again just outside my canal, and wouldn't restart for more then a couple of seconds at a time, and that was few and far between tries.

A neighbor was returning from a cruise, and gave me a tow back to my dock.

I just rebuilt the fuel pump, cleaned the filter, and put in brand new plugs. The primer bulb and the fuel line from the tank are old-ish, but appear to be in good working order. The only tank connector I had available was an anti-siphon type. I have a feeling this is my problem. My local WM was out of stock on the non-anti-siphon, but I'll be picking one up tomorrow. Fuel is brand new (about 5 gals left in a 6 gal tank), and the fuel-oil ratio is at 24:1.

What else should I be adjusting/checking/etc., assuming the anti-siphon doesn't fix it?
 

steelespike

Supreme Mariner
Joined
Apr 26, 2002
Messages
19,069
Re: QD-20 Maiden Voyage

You have the high and low speed needle valves.Be sure the tank vent is open,Your connectors could be leaking air
and still not leak fuel.If the coils haven't been replaced they will need it.
 

Beefer

Lieutenant Commander
Joined
Aug 4, 2008
Messages
1,737
Re: QD-20 Maiden Voyage

Yeah, an air leak was my second guess on a cause. I'm about 80% convinced at this point that it's a fuel side problem, and not a motor problem. When she's running, she purrs really nicely. I'm going to see about that anti-siphon, then ask my neighbor if he has a primer bulb line I could try out.

Vent was open, and I have considered the coils, but haven't checked them, only because like I said, she purrs when she runs.
 

kfa4303

Banned
Joined
Sep 17, 2010
Messages
6,094
Re: QD-20 Maiden Voyage

hmmmmm......the start/stop makes it sound like an ignition issue, but the fact that it idles so well and seem to start with ease makes it sound like the ignition is ok. I would pull the flywheel and give it a look-see in addition for check for air leaks. Perhaps the points just need to be cleaned and reset. Here are some great links. I had a QD-22 and it was awesome, once I got it dialed in. It would usually start on half a pull, and just barely get my old 14' f'glass skiff on plane, but would get most 12' and below up on plane with ease. Good luck. Holler if you get stuck.

http://forums.iboats.com/showthread.php?t=167352

http://www.outboard-boat-motor-repa...on 3 HP 1952-1967 Ignition System Tune-up.htm (not your exact motor, but same process)

http://forums.iboats.com/showthread.php?t=167352
 
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