taylor1 Posted March 23, 2010 Share Posted March 23, 2010 Hello all,I am new to this forum and new to owning an oil head.I have been in the shadows asking a few questions through pm and have gotten,in my opinion,the best advice that could be received. Having said that, I do not want to keep hounding this individual with what I am sure to him are unchallenging questions.{Many Thanks} Any way, I purchased a 2002 rt with 15,000 miles with no service records.Before the riding season starts I am sure it would be smart to change all fluids etc.and start a log.The bike runs great but like most,from what I have read,it has a surge to it.It is not bad at all and I can live with it But my Question is:I will be changing spark plugs and I have seen on different threads that people change the type of plug to help solve this problem.With out doing anything else,is it worth me changing or just sticking with the original plugs Thanks Dave Link to comment
Woodie Posted March 23, 2010 Share Posted March 23, 2010 Welcome! Please fill in your profile, that way we can send an "official" volunteer to test ride your nice new bike! That and invite you to the next TechDaze in your area. Changing the plugs means pulling off the valve covers, which makes this a slightly more difficult job. If you're going to pull the covers off, I would go ahead and check the valves and do a TBS as well, all of which is likely to help with your surging problem. But that's just me. Link to comment
philbytx Posted March 23, 2010 Share Posted March 23, 2010 Howdy Dave ! Ok. Firstly, you do NOT need to pull the valve covers to remove the spark plugs. Just the plastic cover. Secondly, given the lack of documentation, I believe it best to do a COMPLETE service on your bike before going any further. Oh!Surging CAN often be cured or minimalized by an anal valve and TBS job. A complete service for the powertrain, would mean new spark plugs (I would recommend you stick with the recommended NGK's, at least for this service), valve adjust, TBS and a full set of fluid changes (engine, tranny and FD). While you have the bike stripped down, I would heartily recommend you do an iABS brake system and clutch bleed. This would then be your base-line for service. Lot's of links and info on here regarding the work/tools needed and, hopefully, you will be near one of the learned gentlefolk on this board who, perhaps, would assist you for a a couple of fine brews ! Welcome to the asylum Link to comment
taylor1 Posted March 23, 2010 Author Share Posted March 23, 2010 Hi All, Would like to pre Thank everyone for your comments They all are extremely helpful. Phil,that sounds like sound advice so that is what I will do.Also you comment on a fine brew,It is funny how well you can know someone before you ever meet them Ha Link to comment
T__ Posted March 23, 2010 Share Posted March 23, 2010 Taylor, on the spark plugs & surging question.. The proper answer is to use what BMW recommends.. That is not saying you need to but that is BMW’s recommendation.. Now on using the Autolite spark plugs? A lot of us have done just that.. In some cases using the Autolite3923 or Autolite3922 can effect surging a little (won’t make it go away on the single spark 1150RT but on some bikes in some instances it can help.. The Autolite3923 really matches up better to the 1100 engine requirement & the Autolite3922 matches the 1150 application better.. Many riders have successfully used the Autolite3923 in the 1150 though (it’s a little hotter plug than the Autolite3922).. In my estimation there are a couple of small advantages to using the Autolite3923/Autolite3922,, the first is cost.. Those Autolite plugs are real cheap & a LOT cheaper then the OEM spark plugs.. The second is they allow a slightly larger electrode gap to be used & in some cases that can help idle & light throttle runability.. Get your bike all serviced,, a proper valve adjustment,, & good quality TBI balance,, new spark plugs,, good stable idle speed, etc (use the Autolite’s if you want).. Then ride it a while to see how it runs & if the surging bothers you.. That way you will have a good baseline to work from if you decide to make other changes in the future.. Twisty Link to comment
boatzo Posted March 23, 2010 Share Posted March 23, 2010 Hi Taylor, You have received some good advice from the other posters that I cannot add to. Welcome to the group and we hope you will check in often. Link to comment
Woodie Posted March 24, 2010 Share Posted March 24, 2010 Ok. Firstly, you do NOT need to pull the valve covers to remove the spark plugs. Just the plastic cover. I stand corrected. I have never changed the plugs w/o doing the rest of the service work, so mis-remembered that. I love this place! Link to comment
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