| Author | Message | ||
     Ratbuell |
Symptom? 1qt consumption every 600 miles or so. No smoke out the exhaust except at night when I can see it waft past the headlight once in a while. No 'oil smell'. No external leaks. Compression on both cylinders 170-180 dry, 180 wet. I have yet to do a leakdown...but I'm leaning towards valve seals? FWIW, the bike has the factory breather setup that runs the puke pipe into the air filter. No drips out of the filter, but could it possibly be venting that much through the breather and into the carb? Oh, and the other piece of the puzzle...admittedly I'm not a "gentle" rider, and my commute is only about 20 minutes a day. I do try to stretch it on the way home to 30 minutes or more though, "for the bike". LOL. | ||
| Djkaplan |
I had the same problem with my bike when it was brand new. It turned out to be a bad exhaust valve guide that was letting oil get into the exhaust system. Your muffler might have oil in it if this is the case. | ||
| Onahog |
What yer plugs look like...Black and wet? Hb | ||
| Onahog |
Joe... Another situation I have run into with oil consumption, is the little umbrella valves in your rocker boxes not letting the engine breath properly, thus oil is sucked thru whatever place it can find to get out to relieve excess pressure...Kinda like a really good wet fart! etc... Just a thought man...Hb.. | ||
| Mbsween |
Check your tranny fluid, see if the level is going up. if it is then you have a leaky primary side crank seal. So effectively your engine oil drains into the primary. if the leak gets bad enough you'll get oil out the tranny vent which is usually towards the rear of the bike. mines been through 2 of these in 35,000. The first warning sign in both cases was a dropping oil level | ||
| Bad_karma |
Joe I'm with Mbsween on this one. Joe | ||
| Ratbuell |
Primary fluid level is unchanged; went down that road a couple years ago on my FLHP so that was one of the first things I checked. Plugs are clean at the electrode, slightly sooty at the bottom of the threads - burning clean with good spark, but some junk being burned. And, it's got a Supertrapp on it so no place for oil to collect in the muffler...but thanks for the tip  The whole top end is only about 7k old (thunderstorm conversion). Umbrellas are also new. The thought that keeps me up at night is that my mechanic is a moron...and I mis-installed an oil ring (or 2 - hey, consistency counts for something...right?). Damn thing runs great though, so I suspect I'll just keep feeding it oil, at least for the time being. | ||
| Bluzm2 |
Rat, If you get the middle ring in upside down you're going to consume oil. My S2 has the top end from my 00 Cyclone. Shortly after I installed it, I started geting oil on my fron cylinder. It's coming out of the exhaust port. Looks like I have a exhaust valve seal that is totally gone. Plug is clean aas a whistle, exhaust port iw wet! Sounds like a winter project... Brad | ||
| Ratbuell |
The middle ring, or the middle (wavy) oil ring? I do remember putting the dots in the right place on the fire ring (top) and the one below that...and I'd like to think I did the same on all 3 pieces of the oil rings...but the oil usage seems to say otherwise. It didn't help that the ring sleeves weren't labelled "top" on one side in the package like I'm used to in my car stuff. | ||
| Onahog |
Joe...The bottom 3 piece ring has NO markings...up or down is fine... Ya put the wavy in and then install the 2 rails...Gap should overlap 1" plus on all 3...The top and second ring show dots which is UP...If no dots, no matter which way... Oldtimers doesnt help with memmories Bro...LOL... Hankb... | ||
| Ratbuell |
Yah, I did dots-up on the top two rings. Wasn't sure if the oil rings had a directional edge; couldn't remember seeing (or not seeing) any dots on them. Maybe I should make Build Nights a beer-free zone, LOL. Good thing I only work on my own stuff! | ||
| Natexlh1000 |
Mine has always eaten about a quart per thousand miles even when it was new. I just assumed that they all did. | ||
| Mikef5000 |
Mine has always eaten about a quart per thousand miles Me too. I'm putting about as much oil in between oil changes as I do at the oil change. | ||
| Ratbuell |
Well, this is going to sound crazy. I recently changed from 10r12 plugs to the stock 6r12s, just to see. I'll be damned if the oil consumption hasn't slowed noticably. Either my rings decided to seat at the same time just by coincidence, or something about the plug heat range affected what may or may not have been a valve seal/guide leak...either way, I'll take it | ||
| Numb_nutz |
I don't no if this will help, but when my 99 S3 was new it was using a quart of oil every 300mi or so. The dealer told me this was normal. After warranty i pulled it down and you could see streaks up and down the cylinders where the rings were seating and where they were not. Was the bore checked when it was torn down? | ||
| Ratbuell |
Yeh, when I installed new pistons I put in .005" o/s, and the cylinders were bored to match. |
