Go Back   TeamTalk > Maintenance Tips, How-tos and Refurbishing Topics > Electrical

Reply
 
Thread Tools Display Modes
  #1  
Old 09-09-2009, 07:08 PM
johno4ne johno4ne is offline
TT Newbie
 
Join Date: Jul 2009
Boat: MasterCraft, prostar, 1989, 351 ford
Location: Midwest
Posts: 25
no spark coming from the coil

i had the boat running (89 prostar) and one day as i was coming in it died and i got it started a few more times to get me to the dock and i couldnt get it started after that it would turn over but wasnt getting spark i have 11.something at the pos of the coil and i get the same in the center but when i hook up the wire to the dizzy and try and ground it to see if i get a spark i get nothing. i tried useing another center wire that i had still the same thing. any ideas, could my coil be bad? i just bought it not to long ago. if it is bad what would be making it go bad any ideas?
Reply With Quote
  #2  
Old 09-09-2009, 11:10 PM
deereman's Avatar
deereman deereman is offline
TT Enthusiast
 
Join Date: May 2009
Boat: 1987 Mastercraft Prostar 190 Powerslot 351 Ford
Location: Oak Creek, Wisconsin
Posts: 191
what color spark are you getting? if its a good blue color, your coil is good. If not, you should probably replace it. Just had it done on our 87, and it only cost like $40.
Reply With Quote
  #3  
Old 09-09-2009, 11:57 PM
88 PS190 88 PS190 is offline
MC Maniac
 
Join Date: Aug 2005
Boat: 1988 MC Prostar 190, 351 Ford
Location: Midwest
Posts: 3,445
Send a message via AIM to 88 PS190
If you can find what coil you have you can check to see what the values for primary winding and secondary winding resistance are and test them with a multimeter. Takes all of oh maybe 3 minutes once you have the numbers on hand. Thats a surefire way to know if the coil is on its way out.

If you lack a multimeter (I know you have atleast a voltmeter) you can often find a local alternator/starter rebuilding shop listed in the phonebook, and many of them are also sort of guru's at testing things like coils.

Otherwise the pull a spark plug insert in plug wire, ground to engine, crank and watch for blue spark is a decent indicator of the spark problem. But the resistance test is much more sure fire.

11V at coil, what's the reading at the battery just curious as to your voltage drop.
Power at coil with key in run practically rules out kill switch and ignition switch.
Cranks fine.
So then I'd be looking coil and coil terminal corrosion atleast if you can't trip it artificially, that bypasses point and condensor.

Last edited by 88 PS190; 09-10-2009 at 12:02 AM.
Reply With Quote
  #4  
Old 09-10-2009, 11:27 AM
johno4ne johno4ne is offline
TT Newbie
 
Join Date: Jul 2009
Boat: MasterCraft, prostar, 1989, 351 ford
Location: Midwest
Posts: 25
i went and bought a new coil and put it in to check still no spark coming from the coil, so i think the coil is good there is another prob. but what that is i'm not sure. i am having some voltage drop its 12 at the batt. so now i think i will omh out all the wires just to make sure i should be getting 0 right? on the purple wire im getting 2-4 but then it will go down to 0
Reply With Quote
  #5  
Old 09-10-2009, 11:37 AM
TMCNo1 TMCNo1 is offline
MC Hero
 
Join Date: Jul 2005
Boat: Gone
Location: Gone
Posts: 22,134
What's the condition of the kill switch and how are the gauges on the dash reacting?
If the gauges are dead, then check the kill switch, pull the clip off and push it in all the way with your finger and attempt to crank it.
__________________
Charter Member Number 1

Quote: 2RLAKE,
At some point in time people need to wake up, remove their cranial intrusion into their own rectal areas, and take responsibility for their own actions.





Last edited by TMCNo1; 09-10-2009 at 11:39 AM.
Reply With Quote
  #6  
Old 09-10-2009, 12:13 PM
johno4ne johno4ne is offline
TT Newbie
 
Join Date: Jul 2009
Boat: MasterCraft, prostar, 1989, 351 ford
Location: Midwest
Posts: 25
kill switch is new, but just incase i have bypassed it.
Reply With Quote
  #7  
Old 09-11-2009, 01:17 AM
johno4ne johno4ne is offline
TT Newbie
 
Join Date: Jul 2009
Boat: MasterCraft, prostar, 1989, 351 ford
Location: Midwest
Posts: 25
i am getting power to the coil but its not sending it out to the dizzy. what wire is the control for sending out the spark, i feel like for some reason that what ever tells the coil to send the power out isnt working any idea?
Reply With Quote
Reply

Thread Tools
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

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


All times are GMT -4. The time now is 05:58 AM.