Like Tree0Likes

What does the circuit breaker do above fuel filter on 454 MAG?

Reply
Old 06-24-2009, 07:48 AM
  #1
Registered
Thread Starter
 
Join Date: Feb 2008
Posts: 140
Default What does the circuit breaker do above fuel filter on 454 MAG?

Its a red button on the left side of the motor (looking backwards) right above the fuel filter. What does it do? It seems like the motor will still turn over but there will be no spark? if it trips? You can't really feel it click or anything when you push it to reset it.
CenturyUltra is offline  
Reply With Quote
Old 06-24-2009, 08:13 AM
  #2
Registered
Thread Starter
 
Join Date: Feb 2008
Posts: 140
Default

The reason I am asking is I have been having problems with the engine quitting randomly and I have been trying to figure out if it is electrical or fuel related. The one time I messed with this breaker and it seemed to start back up after fooling with it. I was wondering if this could be my problem and what exactly its for?
CenturyUltra is offline  
Reply With Quote
Old 06-24-2009, 11:31 AM
  #3
Registered
Thread Starter
 
Join Date: Feb 2008
Posts: 140
Default

I really need an answer on this guys. The one time I had a spark plug out and it had no spark. I messed around down by this breaker and then it had spark. Does this have anything to do with spark at all? The local marine repair shop told me know but I have read it does, power to the ECU or something? It never stopped turning over but it did lose spark?
CenturyUltra is offline  
Reply With Quote
Old 06-24-2009, 07:06 PM
  #4
Registered
 
Join Date: Mar 2009
Posts: 496
Default

It is one of the too, There is normaly one for the [IGN] and some times one for the fuel pump.
Boat Tech is offline  
Reply With Quote
Old 06-24-2009, 08:26 PM
  #5
Owner/Operator
Platinum Member
 
ChristianGott's Avatar
 
Join Date: Nov 2000
Location: Connecticut
My Boats: 1987 33' Sutphen Outrageous
Posts: 1,370
Default

i worked on this type of situation with my 350 mags, seemed like something was tripping the breaker...replaced the starter slave (a bad one lets the motor turn, but there's no fire), rebuilt the starter, got new bats, cleaned and tightened all connections....wound up being the thunderbolt ignition mod...it was so intermittent that it worked when i touched anything, but failed at the ramp....what a pisser...
if you can swap the mod, it might give you a better idea of where the problem lies....
c
ChristianGott is offline  
Reply With Quote
Reply



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
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -5. The time now is 02:28 AM.


Copyright 2011 OffShoreOnly. All rights reserved.