Home Tournaments Calendar Weather Merchandise Sponsors

Go Back   Spearboard.com - The World's Largest Spearfishing Diving Boating Social Media Forum > Boating > Repairs to Engines and Boats

Repairs to Engines and Boats BOAT means "Break Out Another Thousand" to many of us. Discuss your engine and hull repairs here.

Reply
 
Thread Tools Rate Thread Display Modes
Old 08-11-2016, 11:31 AM   #1
Castor
Registered User
 
Castor's Avatar
 
Join Date: Sep 2004
Location: San Diego
Posts: 935
Tohatsu 90A Starts, revs up to 3000 rpm then stalls

I just went through my Tohatsu 90 and installed new base gasket, head gasket, water jacket gasket, exhaust gaskets, new lower crank seal, rebuilt carbs (with new carb kit), rebuilt the fuel pump, new plugs, new t stat, new water pump. When I put everything back together it starts right up, revs to 2500 or more and then stalls.

Compression is good (105 cold and even with throttle in neutral). Gas is fresh.

I checked my coils and it look like I have one dead one. I have ordered a new one but I am having a hard time believing this would cause it to rev up.

Any help would be greatly appreciated.

Thanks.

Rob
Castor is offline   Reply With Quote
Old 07-14-2019, 09:33 AM   #2
Castor
Registered User
 
Castor's Avatar
 
Join Date: Sep 2004
Location: San Diego
Posts: 935
Re: Tohatsu 90A Starts, revs up to 3000 rpm then stalls

If anyone has a similar issue it was a bad coil
Castor is offline   Reply With Quote
Old 07-14-2019, 11:11 AM   #3
Marcus
Naval gazer extraordinair
 
Marcus's Avatar
 
Join Date: Jan 2003
Posts: 42,214
Re: Tohatsu 90A Starts, revs up to 3000 rpm then stalls

Thanks. That's very interesting as I would've never had suspected.such. The reving up to a certain RPM range all by itself had me puzzled. The coil has nothing to do with that. It sounds like it was being throttled into that range and coil opened once heating up.
__________________
“If the natural tendencies of mankind are so bad that it is not safe to permit people to be free, how is it that the tendencies of these organizers are always good? Do not the legislators and their appointed agents also belong to the human race? Or do they believe that they themselves are made of a finer clay than the rest of mankind?”
― Frederic Bastiat, The Law
Marcus is offline   Reply With Quote
Old 09-15-2020, 03:08 PM   #4
Kahuna
Registered User
 
Kahuna's Avatar
 
Join Date: Feb 2004
Location: Gulf Harbors( The Woodlands)
Posts: 1,137
Re: Tohatsu 90A Starts, revs up to 3000 rpm then stalls

Either that or for some reason the engine still thinks its in neutral and the rev limiter kicked in.
Kahuna is offline   Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

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

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -5. The time now is 04:03 AM.


The World's Largest Spearfishing Diving Social Media Forum Powered by vBulletin® Version 3.8.1
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Copyright ©2002 - 2014 Spearboard.com