Active Active   Unanswered Unanswered

Trouble starting 131 hp kbl 1949 17' deluxe runabout

Post your Boat Buzz technical questions here. We will do our best to respond to your questions in a timely manner.

Moderators: Al Benton, Don Ayers

Post Reply
brandbtn
Posts: 9
Joined: Sun Jul 26, 2009 6:04 pm

Trouble starting 131 hp kbl 1949 17' deluxe runabout

Post by brandbtn » Sat Sep 03, 2016 10:19 pm

I started the summer with a new battery, coil, and condenser. Put new plugs in last year. All summer the boat started right up and ran smoothly. Then today I couldn't start engine. It would crank but just not start. I checked plugs and they sparked. I checked carbs for water and there was none. After about 15 tries and using starting fluid, engine finally turned over. Boat ran great for 20 minutes. I turned off engine and then tried to start it up again but same problem. Just wouldn't start.
Any ideas as to what the problem might be?

joanroy
Posts: 645
Joined: Sun Jan 29, 2012 1:46 pm

Re: Trouble starting 131 hp kbl 1949 17' deluxe runabout

Post by joanroy » Sun Sep 04, 2016 6:10 am

I suspect a spark issue. I'd replace the points and condenser and give it another go. Good Luck!

brandbtn
Posts: 9
Joined: Sun Jul 26, 2009 6:04 pm

Re: Trouble starting 131 hp kbl 1949 17' deluxe runabout

Post by brandbtn » Mon Sep 05, 2016 9:13 am

Thanks, Joanroy...I did change condenser and cleaned points....odd thing is the next morning, after 10 tries, boat started up and ran perfectly for 20 minutes...then when I turned off engine and tried to start it again, nothing....waited a few hours and after several tries it did start again. Now I'm wondering if there is any connection between the engine being warm vs cold...

joanroy
Posts: 645
Joined: Sun Jan 29, 2012 1:46 pm

Re: Trouble starting 131 hp kbl 1949 17' deluxe runabout

Post by joanroy » Mon Sep 05, 2016 11:47 am

Intermittent stalling seems to be a common problem these days. In my case, the Pertronics distributors in my cruiser were losing spark when hot and hard to diagnose because the spark would magically come back after cooling down. Unfortunately I think a lot of the after market ignition parts we're using these days are junk and not suitable for the marine environment. I'm currently waiting for a new pair of Delco Marine distributors. You may want to try to find some better quality ignition parts.

User avatar
tkhersom
Posts: 881
Joined: Wed Feb 27, 2013 6:56 pm
Location: Edgecomb, Maine

Re: Trouble starting 131 hp kbl 1949 17' deluxe runabout

Post by tkhersom » Tue Sep 06, 2016 6:34 am

I am with joanroy on this. The quality of parts today is very disappointing.

Last week I was out for a dinner cruise, got home fine, shut the engines off. When I went to put the AB out on the mooring the port engine would not start. After trying several things I gave up and put her out on one engine. Two days later when I went to investigate deeper I found the spring that holds tension on the points broke. Those points were only two years old and the boat stayed on the hard one of those years. Luckily I had a Pertronix kit waiting to be installed.

Some of what you describe could also be attributed to junk in your carbs.
Troy in ANE - President CCABC

1957 CC 21' Continental "Yorktown" (Mom's boat)
https://www.chris-craft.org/boats/22625/
1958 CC 38' Connie "American Beauty"
https://www.chris-craft.org/boats/22607/
1985 Formula 242LS "Gottago"

Life Is Too Short To Own An Ugly Boat

jim g
Posts: 907
Joined: Wed Dec 14, 2011 10:55 pm

Re: Trouble starting 131 hp kbl 1949 17' deluxe runabout

Post by jim g » Tue Sep 06, 2016 10:09 pm

KBL carbs are notoriously finicky. You need to check fuel pressure and if you have a fuel filter it should be changed. Also how old are the spark plug wires. Since you are running points they need to be solid wires. Not suppression wires.

Also if you haven't change the spark plugs since the problem started. Put a new set in.

Post Reply