jerryjerry05
Supreme Mariner
- Joined
- May 7, 2008
- Messages
- 17,926
1988 125 Force
Rebuilt powerhead.
Compression good and spark on all cyl.
Trigger readings 40OHMS on all 4 cyl.
5-6 volt on 3 cyl and 25 volts on the last.
Packs are all good. Coils are good.
Wiring is ok.
Regulator is good.
It backfires when running.
But when you undo the top plug it stops backfiring???
Unhooked the tach.
Been driving me crazy!!!!
Gonna redo the stator readings and post them. soon.
CDI suggested a double fire but I couldn't find another one firing?
Started as a simple change 2 pistons.
Then: no spark, bad stator,
no fire #4 , bad coil,
bad connections everywhere.(all been replaced)
CDI suggested replacing the bottom pack, now the top cyl. when hooked up makes it backfire?
Before I changed it it did the same on cyl.4
Rebuilt powerhead.
Compression good and spark on all cyl.
Trigger readings 40OHMS on all 4 cyl.
5-6 volt on 3 cyl and 25 volts on the last.
Packs are all good. Coils are good.
Wiring is ok.
Regulator is good.
It backfires when running.
But when you undo the top plug it stops backfiring???
Unhooked the tach.
Been driving me crazy!!!!
Gonna redo the stator readings and post them. soon.
CDI suggested a double fire but I couldn't find another one firing?
Started as a simple change 2 pistons.
Then: no spark, bad stator,
no fire #4 , bad coil,
bad connections everywhere.(all been replaced)
CDI suggested replacing the bottom pack, now the top cyl. when hooked up makes it backfire?
Before I changed it it did the same on cyl.4