Luckymann77
Seaman Apprentice
- Joined
- May 23, 2011
- Messages
- 35
Hey Guys,
Needing some help with my Merc...
Starts OK...
Idles just a bit rough...but not bad.
Nature of the beast I think...
Mid throttle is OK...
Holeshot is inconsistent though
Next time ou I plan to open the idle screws a bit to see if that helps...
Thanks to all that have posted this bit of info !!!
I have pulled the plugs and checked them out...
Can't get much of a read on them as they were new a couple months ago...
Did notice that #4 had some weird looking loose black speckle deposits on it that wiped right off...
#3 and #5 had some carbon arcing across the electrode...very small on both.
I must say that I have ran Sea Foam in the gas as well as sprayed her down with Sea Foam Carb fogger/cleaner as well last time out.
I have rebuilt the fuel pump this year also and replaced the fuel line from tank to motor with a new primer bulb and lines.
I have started her up at night to look for arcing and found none.
The voltage between the yellow stator wires set at 20 VDC on my vohm meter was 6.9 to 7.4 and on the 200 VAC setting was only 2.4 to 2.6 but not sure how that translates on this setting.
I checked for a short to ground on both yellow wires and found none.
This was done while everything was still hooked up...
Should I unhook the yellow wires and fire her up and try these tests while they are not hooked up to the rectifier???
Is it OK to run the motor without these wires hooked up as usual???
BTW, the battery is new...Exide Marine Cranking Battery.
While I had the plugs out I did a compression check with my el cheapo Harbor Freight Tools tester and got these results...
#1...107
#2...130
#3...120
#4...125
#5...127
#6...120
Kinda concerned, obviously, of the #1 cylinder but not sure if it's a super bad issue.
Averages out to 121.5 and 85% is 103.28...
If that means anything...
Can anything be tried to raise the compression on #1???
Thanks for all your help !!!
Luckymann77
Needing some help with my Merc...
Starts OK...
Idles just a bit rough...but not bad.
Nature of the beast I think...
Mid throttle is OK...
Holeshot is inconsistent though
Next time ou I plan to open the idle screws a bit to see if that helps...
Thanks to all that have posted this bit of info !!!
I have pulled the plugs and checked them out...
Can't get much of a read on them as they were new a couple months ago...
Did notice that #4 had some weird looking loose black speckle deposits on it that wiped right off...
#3 and #5 had some carbon arcing across the electrode...very small on both.
I must say that I have ran Sea Foam in the gas as well as sprayed her down with Sea Foam Carb fogger/cleaner as well last time out.
I have rebuilt the fuel pump this year also and replaced the fuel line from tank to motor with a new primer bulb and lines.
I have started her up at night to look for arcing and found none.
The voltage between the yellow stator wires set at 20 VDC on my vohm meter was 6.9 to 7.4 and on the 200 VAC setting was only 2.4 to 2.6 but not sure how that translates on this setting.
I checked for a short to ground on both yellow wires and found none.
This was done while everything was still hooked up...
Should I unhook the yellow wires and fire her up and try these tests while they are not hooked up to the rectifier???
Is it OK to run the motor without these wires hooked up as usual???
BTW, the battery is new...Exide Marine Cranking Battery.
While I had the plugs out I did a compression check with my el cheapo Harbor Freight Tools tester and got these results...
#1...107
#2...130
#3...120
#4...125
#5...127
#6...120
Kinda concerned, obviously, of the #1 cylinder but not sure if it's a super bad issue.
Averages out to 121.5 and 85% is 103.28...
If that means anything...
Can anything be tried to raise the compression on #1???
Thanks for all your help !!!
Luckymann77