iboats - The #1 Store For Everything Boating
 
  #1  
Old April 23rd, 2008, 03:02 AM
wan wan is offline
Cadet
 
Join Date: Feb 2008
Posts: 9
Default Mercury 90hp not starting

hay everybody, thanks in advance for the help and support.
Well here is some information about it.
90hp, 3 cylinders (serial no 9740819) have three carburators. I do not know how old it is, but it looks old. The machine has a key and an electric choke. It was starting fine. Then, it is ideling but not starting eventhough the choke is clincking.
I put new battery and spark plugs with no luck.
May be the flywheel have sliped, how do I know. Will the carborator cleaning help. How do I know that the starter is ok eventhough it is kicking the flywheel.
Reply With Quote
  #2  
Old April 23rd, 2008, 09:05 AM
JB's Avatar
JB JB is offline
Moderator
 
Join Date: Mar 2001
Location: The Hideout, Whitt, TX, USA
Posts: 36,292
Default Re: Mercury 90hp not starting

Go to the Engine FAQs and do the troubleshooting in "Outboard won't start". Let us know what you find.
__________________
RED SKY at night. . .
JB
Reply With Quote
  #3  
Old April 23rd, 2008, 05:23 PM
wan wan is offline
Cadet
 
Join Date: Feb 2008
Posts: 9
Default Re: Mercury 90hp not starting

I do thank you JB. Please bare with me because my know how about this machine is minimal. I already searched the forum in the morning, and found helpfull information that I tryed. Here is what I did.

Opened the air cover behind the carburators, and found that the floats may be called (vertical round brass peices) are stuck closed in all the three carbs, is it normal. I pumbed some fuel, saw it flowing through the first filter, but didn't see it coming from the nossells. I put about 3ml of mixed oil/fuel into the carbs tryed to start it, but it didn't.

Removed the spark plugs sprayed about 3ml of mixed oil/fuel into each hall reintalled the plugs and wires, fired the babe and it started normally. Tryed to fire her again with no lock.
Reply With Quote
  #4  
Old April 26th, 2008, 01:07 AM
wan wan is offline
Cadet
 
Join Date: Feb 2008
Posts: 9
Default Re: Mercury 90hp not starting

Hi finally it started and went fishing. I did put abit of carburator sparay cleaner into the carb nozels, waited for a while then started it. It backfired a little bit, shut it off and started it again, it started fine. Thanks JB.
Reply With Quote
  #5  
Old April 26th, 2008, 01:12 AM
boatradioman's Avatar
boatradioman boatradioman is offline
Petty Officer 2nd Class
 
Join Date: Apr 2008
Posts: 124
Default Re: Mercury 90hp not starting

you may need to get different spark plugs.I would recommend taking your boat in for repairs.
Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
1982 90hp Mercury difficult starting hertelherd Mercury & Mariner Outboards 1 June 19th, 2006 12:40 PM
1999 90HP Mercury tough starting sprout Mercury & Mariner Outboards 9 December 30th, 2003 10:27 PM
Hard starting 90hp mercury ther2525 Mercury & Mariner Outboards 1 June 12th, 2003 06:00 PM
mercury 90hp trouble starting it guagui Mercury & Mariner Outboards 0 March 10th, 2003 10:47 AM
Starting problems with Mercury 90hp BOBRYA Mercury & Mariner Outboards 1 June 6th, 2002 05:36 PM

iboats Forum Directory
Over 100,000 forum posts organized by topic
Outboard Motor Topics
Mercury Outboards
Johnson Outboards
Evinrude Outboards
Force Outboards
Yamaha Outboards
Mariner Outboards
Suzuki Outboards
Honda Outboards
Chrysler Outboards
Tohatsu Outboards
Nissan Outboards
Outboard Motors: non-repair
Vintage Outboards

I/O and Inboard Topics
MerCruiser
OMC I/O, Inboard
Volvo Penta

Propeller Help
Boat Propellers

Boat Repair and Products
Boat Building and Repair
Fiberglass Boat Repair
Marine Electronics
Boat Trailers and Towing
Boat Names
Boat Covers
Boat Parts

Boating Activities Talk
Boating Topics and Questions
Boating Activities and Destinations
Boating Blunders
Boat Shows
Wakeboarding
Water Skiing

Fishing Discussions
Freshwater Fishing
Saltwater Fishing

Boat Type Topics
Aluminum Boats
Bass Boats
Bowrider Boats
Center Console Boats
Cruiser Boats
Cuddy Cabin Boats
Deckboats
Fishing Boats
Fish and Ski Boats
Houseboats
Jet Boats
Jon Boats
Pontoon Boats
Powerboats
PWC Forum
Ski Boats
New Boats
Used Boats

Boat Manufacturers
Boats 250+ Manufacturers
Bayliner Boats
Sea Ray Boats
Zodiac Boats



Outboards

Power Heads

Lower Units

Propellers

Inflatable Boats

Boat Manuals

Engine Parts

All times are GMT -4. The time now is 03:11 AM.