Well first thing to do is to run it richer on a cold day and see if that helps. That'll tell you if the mixture has anything to do with the oil consumption.
Second thing is to perhaps try a different weight oil as the heat will be lowering the oil viscosity. Try both heavier and lighter and see how that affects it. Regards, Dave >>>>>>>>>>>>>>>>>> Original Message <<<<<<<<<<<<<<<<<< On 1/27/03, 12:20:26 PM, "mark krawczuk" <[EMAIL PROTECTED]> wrote regarding Re: engine confusion...: > thats true, the compression rings seal the chamber, and the oil rings just > scrape away the excess oil from the bores, and if these are worn will allow > to much oil on the bores and get into the chamber. > mark k > ----- Original Message ----- > From: "andrew smith" <[EMAIL PROTECTED]> > To: <[EMAIL PROTECTED]> > Sent: Monday, January 27, 2003 11:25 AM > Subject: Re: engine confusion... > > Unfortunatly compression testing doesnt allways give a true indication of > oil > > consumption.Valve guides will just about allways give a puff of smoke on > start > > up if they are worn.Sounds like it might have weak oil control rings.(just > a > > guess).Runing better in hot wheather sounds like it is lean on cold > days.It > > must be nearly at the surge stage on cold days for you to notice the > > difference.Not blowing smoke on hot days has me stumped. > > On my mates drag car we would get it setup right during qualafying(hot > > daytime) and then during eliminations(cold nights) it would run slower and > > would be knocked out in the first round.If you cant run within a couple of > > hundreths of your dial in then you get knocked out.We are now getting a > much > > better handle on the night time tune and let it run slower during > qualifying. > > > > "GREENBURY, Andrew Robert" wrote: > > > > > Hi everyone, > > > > > > The condition of my L18 has seemed to be getting worse and worse - > blowing > > > more and more clouds of smoke predominantly after a closed throttle > > > (taking off, after coasting down a hill etc). Its now doing it > > > consistently after every coastdown. > > > > > > However a compression test revealed a consistent 176 psi (at WOT cold) > in > > > all cylinders, so I thought it might be the valve seals. > > > > > > Now the weird thing is in our hot Melbourne weather the car runs much > much > > > better (runs smoother, more responsive, less harsh). And the really > weird > > > thing is in 40+deg weather Saturday, the engine didnt blow any smoke at > > > all, even after coasting down big hills that usually have bellowing > clouds > > > pumping out. > > > > > > So the reasons for all this have got me stumped. Something I thought may > > > be a factor was that the atmospheric changes (temp, pressure) has the > > > engine sucking less air for the same amount of fuel ie running richer in > > > the hot weather, therefore the engine was running lean before. > > > > > > I also thought maybe for some reason the engine is sucking blowby in > > > excessively, adversely affecting combustion performance, but how all > this > > > relates to better performance and very little smoke in hot weather > > > compared to normal has got me stumped... > > > > > > Any thoughts on this would be greatly appreciated, > > > Andrew > > > > > > > --membersozdat------------------------------------------------------- OZDAT Mailing List Please Note:- Send (un)subscribe requests to [EMAIL PROTECTED] Send submissions to [EMAIL PROTECTED] No unauthorised redistribution of this email http://www.ozdat.com/ozdatonline/index.htm http://www.ozdat.com/ozdatonline/listindex.html http://www.mail-archive.com/[email protected]/ ---------------------------------------------------------------------
