Omc 5.8 1988 bayliner starter issue

[scotty628]

Hey everyone.

I have an 88 Bayliner 2455. Been working great with no issues in the last 2 months ive owned her. Went fishing and had the radio and fridge on for about 1-2 hours, engine off. Went to start her and no issues. Then after about 5 mins of running she stalled a low revs ( i was approaching my mooring) I couldnt restart her. Since then i have recharged the batteries (1 700 amp and 1 125 amp). The engine turns over but wont start. I have put a spark tester in the spark plug and have a spark. All bty connections are good and tight. There is fuel at the bottom of the carb. fuses ok straight after batteries.

Are there any other fuses / safety switches i need to check? BTW i have also checked the lanyard and bypassed the button in case it was screwed but still no change......is my starter knackered??????????? any help greatly appreciated. SRW

 

[Kawasaki]

The engine turns over but wont start

Well that suggests your starter motor is working!

Are there any other fuses / safety switches i need to check? SRW

Yep
There is a 'micro switch' that is postioned by the gear cables
It comes into play when you select neutral as per your berthing/ mooring stalling situation.
This might be playing up.
It can be adjusted too
Hard to diagnose from a distance but take a look at this switch it could be mucking you about!
Oh an welcome to the Forum scotty
Some right good experts on here
Someone else will give you tips as well no doubt

 

[scotty628]

Kawasaki,

Hi and many thanks for the reply.

The micro switch you speak of, would that be the `cluster of rubberised shotgun sized pods` located at the top of the engine to the stern of the air filter?????

Having looked at other posts i have also heard about the ignition fuse / 20 amp fuse. I havr the Seloc manual but am not sure where it would be located. The only fuse box i have found to date is under the steering wheel. I have remover the battery again and have had it on charge overnight. Im gonna pop out and have another look this morning.

Would you believe i came away from bikes (ZX9 / Blade / R1 to go onto boating......apparently its safer????????

 

[lovezoo]

If you google "OMC shift interrupter switch" you will get loads of information on this, including diagrams. eg:

http://support.crowleymarine.com/fo...witches-and-electronic-shift-assist-operation

You do need to know what model you have.

On the OMC the switch doesn't kill the ignition completely, just cuts the spark to half of the cylinders - at least when it is working properly.

 

[scotty628]

Omc 5.7 starter issue

Lovezoo,

Morning and thanks for the tip. Its in my favourites bar so i can have a look once i eventually get her started.

Cheers

 

[spannerman]

Does it try to start while cranking but die when you stop cranking?
I remember some years back a mates OMC had this problem and OMC used a ballast resistor coil, where its an 8v coil fed via a resistor under normal running to drop 12v down to 8v.
But under crancking it gets a full 12v from the starter solenoid so the coil gives a stronger spark while when the starter is sucking a lot of current.
There is a wire from the solenoid to a relay if I remember which switches on 12v to the coil while cranking.
There is a resistor on the normal supply to the coil and when these burn out you lose power to the coil.
So get a voltmeter and measure if you have power to the coil + with the ignition on, and while cranking.

 

[scotty628]

1988 omc 5.8 starter issue

Cheers Spannerman,

Heres where i am at the mo. The starter struggles to turn initially as though the btys are low, however they are fully charged. After a second or two the starter sounds as though its upto normal speed, but still the engine fails to kick in. Ill check the voltage where you suggest and go from there.

Thanks pal

 

[scotty628]

Hi all, thanks for your input so far. I have attached a photo of the engine compartment. Id really appreciate if i could be pointed in the right direction regarding the location of the microswitch mentioned above.

cheers

 

[RIN]

Hi all, thanks for your input so far. I have attached a photo of the engine compartment. Id really appreciate if i could be pointed in the right direction regarding the location of the microswitch mentioned above.

cheers

Has the carb been adjusted recently?

We had a 1990 (I think) Bayliner 2455 with the same engine and at one point had great difficulty with the engine cutting out. The engine had been serviced and the engineer had made an adjustment to the carb making the mixture leaner. The choke is automatic and because it thought the engine was hot, it was making the mixture even leaner which caused the engine to stall

There is a microswitch which as stated already cuts out one bank of spark plugs when you change gear . Can't remember exactly where it is though but it will obviously be on the end of one of those cables coming in. I will check to see if I still have the workshop manual

 

[lovezoo]

Id really appreciate if i could be pointed in the right direction regarding the location of the microswitch mentioned above.

As I suggested google "OMC shift interrupter switch" for a load of information inlcuding diagrams. The crowley link I gave you has a lot of information on OMC engines/legs.

 

[scotty628]

Lovezoo,

thanks again, am i right in understanding though that i need to get the engine running first? i didnt experience any real problems shifting from forward to reverse before this. And still dont now. The links you suggest are relating to shifting issues not a non starter or have i missed the point??? sorry im not mechanically minded and should be looked upon as a total novice.

Im trying to id these microswitches. I can a see a cluster of shotgun cartridge size rubberised pods which appear to be connectors. But no `switches` to reset??????

 

[scotty628]

Rin,

thanks. Nothing has been touched since i owned it and it has been running fine. As i am totally new to this engine and have sod all mechanical experience im pretty much stabbing in the dark. If i knew where to look for these microswitches it would be somthing less to worry about i guess. Any help in this area is very much appreciated.

Cheers

 

[RIN]

Have looked for manual but must have got rid of it. I think the switch is located just to the left of the flame retarder in your pic (big thing on top of carb that says Cobra 5.8)

Also see here http://www.dougrussell.com/partscat...7,709,708,710,711,712,713,714,715,716,717,718

The switch is 58 or 60 and is operated by momentarily by the cams 34 as you select forward or reverse gear

 

[Kawasaki]

Lovezoo,

t i didnt experience any real problems shifting from forward to reverse before this. And still dont now. The links you suggest are relating to shifting issues not a non starter or have i missed the point???

OK Scotty, I / We may have missed the point here!
Just-- you mentioned the motor mucked about when berthing.
So
Back to basics
Whip a spark plug out and 'ground' it, ie earth it to the block or somewhere and get a Bod to turn the enginge over whilst you check you have a spark.

Remove the fuel line where it enters the carb and again get someone to turn the motor over to see that fuel is pumping.

If you have spark and fuel summat should happen!
'Pump' the throttle lever a few times first
Then leave it kinda half open whilst you crank the engine
This is basic stuff I know but you just might get the engine to fire then you can investigate further
IE , if summat happens then you eliminate stuff like a coil or a dizzy cap or a fuel blockage etc
The motors are pretty simple really.

Have you not got a Car Mechanic mate handy?
Although its in a boat it's just like an old Yankee car basically!!
Cept for stuff like micro switches mentioned earlier.


RIN mentioned the Carb
It may muck you about if adjusted wrongly but should not you actually starting the engine unless it is way out!
However RIN's piccie/schematic does show where the switch is, good un RIN.

Scotty
Had a similar prob with one of those motors a few weeks back
Eventually got the thing to go (by doing the above method with the throttle lever etc etc) but it spluttered and f%rted!!

Turned out to be the Ignition Coil that was knackered.

So yeh, back to basics Mate
I bet it's summat simple
Good Luck!!

 

[scotty628]

Kawaski,

Thanks for your reply and more importantly your patience. I will go out tomorrow and go from scratch again.

I have so far checked for fuel to the carb by releasing the fuel line at the bottom of the carb and cranking over so i know there is fuel from the tank and the line is clear.

I have placed a spark plug tester between the plug and the ht lead and observed spark.

I have pumped the throttle 3 times then left the throttle 1/3 open and tried cranking (like i always have done and she fired right up before) but i still get the engine turning over but not firing up.

ill checK the microswitch located by Rin.....thanks Rin BTW.

I know this will be a real simple fix and its somthing real stupid but at least when i find it ill know.

You mention the ignition coil, would that allow the engine to turn over but not start???? if so, if i checked for power into that it might be the issue?

thanks again everyone....U R true legends!!!!!!!!!!!!!!

 

[spannerman]

The microswitch is part No 60 in the link from RIN, you could try just unplugging it to see if the engine runs, as it normaly only works when shifting gear but could be out of adjustment and giving you starting problems.