After installing new plugs, bike ran great for a couple of days. Now its back to its old rough ways. Each plug still has spark. I guess my question is "how do you know if it has enough spark?"
I checked the points and gap is still correct. Plugs are black, but no heavy build up or anything. Do I need to gap the plugs,if so what is correct plug gap? Will cleaning up the plugs make a difference? Do plugs "slowly go out" or do they die all at once? Lots of Questions I know, thanks for any help.
-Kent
CA 77 eats plugs??
CA 77 eats plugs??Slopokecr,
Do as davomoto suggests. Is your battery new, with a full charge? Weak batteries can cause ignition woes. Also, does your bike have original mufflers with baffles? How clean is your air filter? Is it an OE paper filter or some other aftermarket type? Hoosier Tom
Kent, your plugs aren't your problem, but they definitely need cleaning before further checks if they're blackening. The 14:1 air/fuel mix is too rich (too much fuel). But follow fuel flow hints/checks first:
http://www.honda305.com/forums/viewtopi ... c&start=10 Then, clean the plugs & remove the air filter, running the bike for a short ride without it. Check the plugs' colours again -- they should be a dark, sandy tan colour; if they are, after a ride without the filter, then the filter is clogged. Don't make any carb adjustments until a possible filter problem has been eliminated.
Last edited by e3steve on Fri Jan 02, 2009 9:27 am, edited 2 times in total.
Be sure they aren't too big of gap, narrow like 28 sound about right. On a split secondary type like your bike has, the spark has to jump both gaps at the same time, so if they are wide it will act like you said. Be sure they are perfect to start with or they will never recover from being the least bit fouled. You can try spraying some of that brake cleaner, on them, it leaves no residue, but it might take a new set, with anarrow gap.
Thanks!!
After posting, I have realized that if I dig around enough in the forums, there are usually a few postings on my exact same problem(s). I suspect my fuel mixture is too rich. I'm going to raise the clip a notch, install new (and properly gapped) plugs and see how that goes---Ill let ya know. I really appreciate all the helpful folks on this site. Aloha, Kent
Kent, don't fiddle with the carb settings until the possibility of a clogged air filter has been eliminated. You'll run the risk of making the mixture too lean -- veeeery undesirable (and potentially fatal for the pistons/valve seats) -- once you do replace the filter.
One step at a time, chum! Cure the fault, not just the symptom. If you recently replaced the plugs, they should be fine (unless they're too 'cold'). Which make & type are you using?
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