coil question
#1
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coil question
Could a bad coil cause an engine not to rev past 5000 rpm.Motors run great till I hit 5000 and then I see one motor has a bounce in the tack and both motors wont run past the 5000 point even with different props.These motors ran to 6000 on the dyno and the only thing I changed is the coil.I also checked fuel supply and 5 psi at max rpm and O2 sensor says they are running 10.8 afr.
Thanks Nordic95
Thanks Nordic95
#2
Toxic FORMULA
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Re: coil question
Originally Posted by nordic95
.These motors ran to 6000 on the dyno and the only thing I changed is the coil.I also checked fuel supply and 5 psi at max rpm and O2 sensor says they are running 10.8 afr.
Thanks Nordic95
Thanks Nordic95
It's also unlikely that BOTH coils have the same problem.
#3
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Re: coil question
Originally Posted by mopower
The boat have a rev limiter in it? Mine at 10.8/10.9 A/F left the plugs DARK brown. Might want to take out a little jet.
It's also unlikely that BOTH coils have the same problem.
It's also unlikely that BOTH coils have the same problem.
Thanks Nordic95
#6
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Re: coil question
Originally Posted by nordic95
Could a bad coil cause an engine not to rev past 5000 rpm.Motors run great till I hit 5000 and then I see one motor has a bounce in the tack and both motors wont run past the 5000 point even with different props.These motors ran to 6000 on the dyno and the only thing I changed is the coil.I also checked fuel supply and 5 psi at max rpm and O2 sensor says they are running 10.8 afr.
Thanks Nordic95
Thanks Nordic95
I had that problem in Lake George. Tach was bouncing back from 5000-4800rpm. Thought it may have been the tach,found out in LG was the coil. Motor died out in the first leg of the run.
I have had 2 MSD Blaster coils go down on me in the last 40hrs on my boat! I now have a spare on board.
#7
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Re: coil question
Originally Posted by DRIPPINWETII
I would say yes.
I had that problem in Lake George. Tach was bouncing back from 5000-4800rpm. Thought it may have been the tach,found out in LG was the coil. Motor died out in the first leg of the run.
I have had 2 MSD Blaster coils go down on me in the last 40hrs on my boat! I now have a spare on board.
I had that problem in Lake George. Tach was bouncing back from 5000-4800rpm. Thought it may have been the tach,found out in LG was the coil. Motor died out in the first leg of the run.
I have had 2 MSD Blaster coils go down on me in the last 40hrs on my boat! I now have a spare on board.
Epoxy filled and can be mounted in any position.
#9
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Re: coil question
Originally Posted by Iggy
If I was to use this with the stock Thunderbolt IV set up will a ballast resistor be necessary??
If you have a ballast resistor now, then I believe you would keep it.
#10
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Re: coil question
Originally Posted by Wobble
MSD tech recommended this coil for marine use. http://www.msdignition.com/coil_blaster_3_8222.htm
Epoxy filled and can be mounted in any position.
Epoxy filled and can be mounted in any position.
I will switch to those if I keep having problems.
Both coils had made in Mexico stickers on the bottom.