Baller Ed_Johnson Posted January 30, 2012 Baller Share Posted January 30, 2012 Wonder if Jody or anyone has heard of this problem ? When my CC200 with the 409 reached 80 hrs. it started missing really badly. Since it was under warranty I called the dealer and he sent a Tech Rep to the house to try the boat out. Put in a new set of plugs and everything was fine. Yesterday, now at 165 hrs, the same problem occurred. After the 4th pass, went to come out of the water and the driver shut the boat down. There it was again, missing and idling like a fuel dragster. I thought the AC Delco plugs that the factory used must be cheapo and I should get a higher quality plug like Bosch Platinum, or something like that. I go to a Auto Specialty Store, explain the situation to the Rep,and give him one of the AC Plugs to cross reference. He checks the computer and tells me that the Plugs I have, AC Delco number 8#41-110, are "Iridium," and the best available. So I get another set, put them in, and the boat runs great....The question is, will these only last eighty hours again ??? PS: When I pulled the old plugs out I looked for one to be really bad but they all looked the same. Any suggestions would be greatly appreciated....Thanks, ED Link to comment Share on other sites More sharing options...
Baller_ RichardDoane Posted January 30, 2012 Baller_ Share Posted January 30, 2012 iridium is a good plug, but if they don't last I'd cross reference to a laser platinum and see how they hold up Link to comment Share on other sites More sharing options...
Baller alex38 Posted January 30, 2012 Baller Share Posted January 30, 2012 I was told iridium are supposed to go about 500 hours Link to comment Share on other sites More sharing options...
Phil2360 Posted January 30, 2012 Share Posted January 30, 2012 What did the old plugs look like when they were removed out of curiosity? Link to comment Share on other sites More sharing options...
Baller_ Jody_Seal Posted January 30, 2012 Baller_ Share Posted January 30, 2012 Would like to see the plugs. Is it consistent to one or two holes or is it random to all eight? Wonder what the tops of the pistons look like. I have 200 hours on my 409 with no problems what so ever. Link to comment Share on other sites More sharing options...
Baller Ed_Johnson Posted January 31, 2012 Author Baller Share Posted January 31, 2012 It felt to me like one plug was missing badly, not all eight. All plugs looked relatively the same. No burnt electrodes or excessive carbon buildup. If it happens again, I will change them one at a time and run it, to see if I can find the guilty cylinder. The strange thing is it happened both times close to eighty hours with no warning. Both times I had completed 4 passes, everything running fine, and the driver shutdown the boat pulling me up on the 5th pass, saying , "Somethings really wrong." Link to comment Share on other sites More sharing options...
Baller danbirch Posted January 31, 2012 Baller Share Posted January 31, 2012 I'd check the distributor/rotor. Link to comment Share on other sites More sharing options...
Baller_ Jody_Seal Posted January 31, 2012 Baller_ Share Posted January 31, 2012 Sorry no Dizzy on a 409! Coil over plug.. Link to comment Share on other sites More sharing options...
Baller danbirch Posted January 31, 2012 Baller Share Posted January 31, 2012 Bummer! That may have been an easy fix. My 197 mcx has a "Dizzy".... Link to comment Share on other sites More sharing options...
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