lost my hole shot, top end around 5000-5200 now. Week befor had it out ran great, as my day progressed Sat. problem got worse. Oh yea 2007, what could be my problem?
lost my hole shot, top end around 5000-5200 now. Week befor had it out ran great, as my day progressed Sat. problem got worse. Oh yea 2007, what could be my problem?
Start with a spark test, and inspection of spark plugs.
You may have one cyl. with no spark- if so, you may need a coil. Let me know if you need one- we keep them in stock (and of course, if you're under warranty, they're covered).
If you've got spark on all 6, and spark plugs are in good/new condition, get it in for Computer Diagnostic. Many sensor faults result in "Engine Guardian", which reduces your "Available Engine Power" (This is the PCM taking steps to "protect" the engine).
Dual Mercury Master Technician- for Mercury Outboards, Mercruiser and Mercury Racing at European Marine in Greenville, SC.
Still consider myself a "Marine Apprentice" after 48 years (learn something new every day).
Mercury Parts, Mercury Outboards, Smartcraft & Accessories, Injector Service, TDR Reeds- BBC Sponsor
+1 And just because you may have spark on all 6 when cranking, you may "lose" it while running.
spark test showed no fire on #5, diagnostic showed coil bad. Replaced, hole shot back, go fast now . Thankyou
Good deal it was only a coil
I once ran my 250 XS not knowing that I had blown #6 in a very bad detonation event for a couple of miles at 84 mph back to the ramp. I knew something was wrong bad though as I was down 16 or so MPH but it's still Amazing how strong those XS's are huh
Glad you found the bad coil! And yes, these motors do a very nice job of "masking a dead hole"!
Dual Mercury Master Technician- for Mercury Outboards, Mercruiser and Mercury Racing at European Marine in Greenville, SC.
Still consider myself a "Marine Apprentice" after 48 years (learn something new every day).
Mercury Parts, Mercury Outboards, Smartcraft & Accessories, Injector Service, TDR Reeds- BBC Sponsor
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