deejay391 0 Posted May 18, 2006 Hi guys Engine isn't really specific to this forum but the knowledge i know is here Saxo VTS engine, 708 cams & KMS ecu Been kicking out lots of smoke & oil at high revs... not sure why we did a compression test last night and results came back as Cold: 240-250 Warm/Hot: 233ish across all plugs Oil (little bit dropped in): highest was approx 350 (guage went to 300), then 280, 290 & 266 Anyone have any ideas?? To us untrained eyes they dont look good but we dont know reason behind it. cheers DJ Share this post Link to post Share on other sites
mbayley77 0 Posted May 18, 2006 From what i understand the normal compression reading is around the 200 - 220 for a good engine. So 233 is good i would say. When you say it kicks out smoke and oil, where are you saying the oil comes out from? Share this post Link to post Share on other sites
deejay391 0 Posted May 18, 2006 comes out exhaust... only high revs tho say about 6kish big puff of smoke and oil also went around combe a few weeks ago and ended up on side of road... oil came up the head and was dumped out of the overflow pipe on side of head that help explain anything.. was about 2/3 laps in and wasn't hanging about :S Share this post Link to post Share on other sites
Guest smokinslim Posted May 18, 2006 Is the breather on your head kicking out excessive amounts of oil at high revs that could be burning in the combustion chambers? Just an idea like.... Share this post Link to post Share on other sites
deejay391 0 Posted May 18, 2006 Is the breather on your head kicking out excessive amounts of oil at high revs that could be burning in the combustion chambers? Just an idea like.... yes thats where the oil came from out on track... wat can be done to stop this?? Share this post Link to post Share on other sites
Guest smokinslim Posted May 18, 2006 An oil catch tank would be a good place to start, will stop oil getting into your air intake anyway. These can be bought ready made (and shiney) or home made as a few peeps on the forum have done. A search should tell/show you everything you need to know about these. Read up on sump and rocker cover oil baffles also, again a search should help. There may be improvements that could be made to these to reduce the amount of oil exiting the engine through the breather. Share this post Link to post Share on other sites
jonD6B 0 Posted May 18, 2006 Alot of rally cars take the breather system off all together to stop this issue, however, this isn't a good idea for a road car as it is also a part of your cold start system so it won't idle until it's warmed up. Share this post Link to post Share on other sites
Rippthrough 98 Posted May 18, 2006 Alot of rally cars take the breather system off all together to stop this issue, however, this isn't a good idea for a road car as it is also a part of your cold start system so it won't idle until it's warmed up. It ain't on the TU's I've seen? Share this post Link to post Share on other sites
jonD6B 0 Posted May 18, 2006 Oooooops! I didn't read the post properly There's always one.... Share this post Link to post Share on other sites
stu_woac 1 Posted May 18, 2006 are you sure its oil as black smoke is over fueling and when my float was gone on the twin 40s I had fuel spitting out the back alot too I still have it now on change over as my idle jets are rich is the ecu correct ? any sensers miss reading? the oil coming out the breather out on track is very normal I lose 200ml every 15min session at combe catch tank is the answer Share this post Link to post Share on other sites
deejay391 0 Posted May 19, 2006 An oil catch tank would be a good place to start, will stop oil getting into your air intake anyway. These can be bought ready made (and shiney) or home made as a few peeps on the forum have done. A search should tell/show you everything you need to know about these. Read up on sump and rocker cover oil baffles also, again a search should help. There may be improvements that could be made to these to reduce the amount of oil exiting the engine through the breather. Theres a catch tank (little water bottle) and oil is still coming out.. Will look at oil & rocker cover oil baffles are you sure its oil as black smoke is over fueling and when my float was gone on the twin 40s I had fuel spitting out the back alot too I still have it now on change over as my idle jets are rich is the ecu correct ? any sensers miss reading? the oil coming out the breather out on track is very normal I lose 200ml every 15min session at combe catch tank is the answer Haven't checked ECU or Sensors, which sensors are likely to be playing up.. its got kms ecu so can put it on computer tonight and have a look Share this post Link to post Share on other sites
