Forum: WHALER
  ContinuousWave
  Whaler
  Moderated Discussion Areas
  ContinuousWave: Whaler Performance
  No Spark, No Start

Post New Topic  Post Reply
search | FAQ | profile | register | author help

Author Topic:   No Spark, No Start
caddis posted 03-21-2004 11:38 PM ET (US)   Profile for caddis   Send Email to caddis  
My 1988 Johnson 40 hp. won't fire. Plugs are brand new, plug wires are in great shape, sprayed starting fluid in plug holes to see if it was bad gas. Not even a spit or sputter. Battery is brand new as well. Need some suggestions on where to look next. I'm not too good at these things.
jimh posted 03-21-2004 11:39 PM ET (US)     Profile for jimh  Send Email to jimh     
Check the KILL SWITCH safety lanyard.
caddis posted 03-21-2004 11:41 PM ET (US)     Profile for caddis  Send Email to caddis     
First thing I looked at. On there tight.
greyg8r posted 03-22-2004 01:41 AM ET (US)     Profile for greyg8r    
The title of this heading says no spark, but you make no mention of testing it.

If you haven't done so, you need to check if there is spark to the plugs. Go to an auto repair shop and ask for a spark tester. They come in various flavors, but will either spark or illuminate if there is spark to the plugs.

If there is spark, check the fuel supply (hose, bulb, carbs, fuel filter, fuel pump)

If there is no spark, I would check the coil, power pack or a loose or bad connection first.

When was this engine run last? When did the problem develop?

Richard

Joe Kriz posted 03-22-2004 05:42 PM ET (US)     Profile for Joe Kriz  Send Email to Joe Kriz     
caddis,

Obviously you have an electric start 40 HP..
Do you have a Key Switch with a "Push to Choke"???
If you do you might want to check if it is working... You should be able to hear a clicking noise from the engine if it is working although the little primer hose may be clogged.

Suggestion:
Somewhere under the engine cowling, usually the Starboard side/front, there is a manual Choke/Primer lever.... This lever is RED.... Try flipping the Red lever 180 and then starting your engine...

Let us know what you find out.....

caddis posted 03-22-2004 09:26 PM ET (US)     Profile for caddis  Send Email to caddis     
Well, when you flip the red lever, it deposits gas all over the driveway from free flowing fuel.
Buckda posted 03-22-2004 09:33 PM ET (US)     Profile for Buckda  Send Email to Buckda     
There is your problem.

I'd run it over to your mechanic since you're "not to good at these things."

Sounds like you have a rupture somewhere.

Dave

caddis posted 03-22-2004 09:51 PM ET (US)     Profile for caddis  Send Email to caddis     
Okay, I may have a rupture, but does that prevent the plugs from firing? I realize if it floods it could, but I tried the tester and it ain't lightin' up. Probably using the damn thing wrong. Remember, I put starting fluid in the plug holes and it still didn't spit.
Kelly posted 03-23-2004 10:20 AM ET (US)     Profile for Kelly  Send Email to Kelly     
caddis,
I had a 1987 70 hp Johnson and it was not getting a spark. If I remember correctly, I found that one of the main wires had corroded and was not making good contact at the switch. I fixed this connection and it fired right up. Check all your wiring connections.

I also had an experience with a motor cycle that involved pushing it several miles to a phone that involved a fuse. I always check fuses first now.

Kelly

caddis posted 03-23-2004 11:22 AM ET (US)     Profile for caddis  Send Email to caddis     
I was thinking after opening up the cowling that there may be fuses in there somewhere. I am assuming that the rubber pods that are in-line with the wires are fuses, correct? Damn hard to open up, if they are. One is red the other black.

I'll have to make this a learning experience, as the local shop (yes, the main one- haven't found another) is booked for service until the second week in June.

Kelly- did you take apart the controls to check at the key switch?

Anyone know where I can get a manual for this engine? It would be great if I could identify each part so I knew what they were for.

Thanks everyone for your help.

Kelly posted 03-23-2004 11:40 AM ET (US)     Profile for Kelly  Send Email to Kelly     
On mine, there were several wires attached to the back of the switch.

Kelly

andygere posted 03-23-2004 11:50 AM ET (US)     Profile for andygere  Send Email to andygere     
Caddis,
If you don't have the OMC shop manual for that motor, try to get one. It will have wiring diagrams and photos as well as flow charts for troubleshooting. They are often sold on E-Bay and other internet sources.

If you decide professional help is in order, consider this: Many marine mechanics employed by dealers often do side jobs on the weekends. Some of the best work I have paid for was done this way, in my driveway, and I was able to watch and learn while my pesky old Merc 40 was repaired. Ask around at the tackle shops or local chandlery, often these guys will leave a card or generate their business by word of mouth, just on good reputation.

Joe Kriz posted 03-23-2004 02:25 PM ET (US)     Profile for Joe Kriz  Send Email to Joe Kriz     
caddis,

Back to the Red Lever...
You say fuel is flowing out on the driveway...
Where is the fuel coming from?
The fuel should be going into the carbs via the little black primer hose which should be connected to the top of the carb... If the hose has become disconnected, maybe this is the problem...

Toad2001 posted 03-24-2004 04:14 AM ET (US)     Profile for Toad2001  Send Email to Toad2001     
Also check where the main electrical harness meets the engine. Unplug it and inspect for corrosion. There are more than a dozen male pin connectors that come in contact within this harness as well. Use a small probe and gently spread them open a bit so when you reconnect it you establish a better connection. I have seen engines fail first hand for this reason.
caddis posted 03-24-2004 06:24 PM ET (US)     Profile for caddis  Send Email to caddis     
Thanks everyone. I will try your suggestions tonight and let you know how it goes!
caddis posted 03-24-2004 09:12 PM ET (US)     Profile for caddis  Send Email to caddis     
Okay, I'm going backwards here. Now the flywheel won't even spin. This is a change from last night, and I didn't do anything (honest)! So does this signify a powerpack issue?
Chuck Tribolet posted 03-24-2004 10:37 PM ET (US)     Profile for Chuck Tribolet  Send Email to Chuck Tribolet     
Flywheel won't spin?

Electric start, I hope? First thing to check is the
battery. Second thing is to run jumper cables from the
battery to a good ground on the engine and the big lug on
the starter (this bypasses a lot of potentially corroded
wiring) and then jump from the big lug on the starter to
where ever the starter switch connects to the starter
(manual helpful here). If it doesn't turn over, it's the
starter. If it does, it's wiring.

Not electric start? Not good, something's siezed if it
won't turn when you pull the rope.

Chuck

Chuck Tribolet posted 03-24-2004 10:40 PM ET (US)     Profile for Chuck Tribolet  Send Email to Chuck Tribolet     
Flywheel won't spin?

Electric start, I hope? First thing to check is the
battery. Second thing is to run jumper cables from the
battery to a good ground on the engine and the big lug on
the starter (this bypasses a lot of potentially corroded
wiring) and then jump from the big lug on the starter to
where ever the starter switch connects to the starter
(manual helpful here). If it doesn't turn over, it's the
starter. If it does, it's wiring.

Not electric start? Not good, something's siezed if it
won't turn when you pull the rope.

Chuck

Post New Topic  Post Reply
Hop to:


Contact Us | RETURN to ContinuousWave Top Page

Powered by: Ultimate Bulletin Board, Freeware Version 2000
Purchase our Licensed Version- which adds many more features!
© Infopop Corporation (formerly Madrona Park, Inc.), 1998 - 2000.