peanut 0 Posted April 19, 2007 Report Share Posted April 19, 2007 right, any help here would be greatly appreciated. Working on a rado vr at the moment, its just had the head gasket done Whilst it was being done it was found to have no thermostat. According to the owner this had been removed 2yrs previous due to overheating problems (which will explain why it always ran cold). The gasket didnt fail completely but had started to go and was losing a bit of water. Used a little bit of oil but nothing major, circa 1ltr per 1000miles which iirc is acceptable on a 160k engine which this is. Head was checked for trueness, all was fine and no cracks. H/G replaced as was new thermostat. Since this was done its started smoking quite heavily on overrun, most noticeable when changing donw through the gears and slowing down (like coming upto a roundabout or junction) Its using a fair bit of oil, the smoke out the back is mostly blue with a hint of white. Did a compression test and came up with the following no1 cyl- 160spi no2 cyl- 180psi no3 cyl- 160psi no4 cyl- 180psi no5 cyl- 160psi no6 cyl- 165psi According to autodata this seems to be within tolerance. Any ideas what this could be? initial thoughts were that it could be valve stem oil seals, but now leaning more towards it being the rings possibly due to it now working at normal operating temp and the oil being sucked up past the rings. When the plugs were romoved the rear 3 were slightly oily and sooted up but the front ones were nice and clean. Can the valve stem oil seals be replaced with the head still on? Am i right in thinking there is a special tool for this? Any opinions would be greatly appreciated Gav right, any help here would be greatly appreciated. Working on a rado vr at the moment, its just had the head gasket done Whilst it was being done it was found to have no thermostat. According to the owner this had been removed 2yrs previous due to overheating problems (which will explain why it always ran cold). The gasket didnt fail completely but had started to go and was losing a bit of water. Used a little bit of oil but nothing major, circa 1ltr per 1000miles which iirc is acceptable on a 160k engine which this is. Head was checked for trueness, all was fine and no cracks. H/G replaced as was new thermostat. Since this was done its started smoking quite heavily on overrun, most noticeable when changing donw through the gears and slowing down (like coming upto a roundabout or junction) Its using a fair bit of oil, the smoke out the back is mostly blue with a hint of white. Did a compression test and came up with the followingno1 cyl- 160spino2 cyl- 180psino3 cyl- 160psino4 cyl- 180psino5 cyl- 160psino6 cyl- 165psi According to autodata this seems to be within tolerance.Any ideas what this could be? initial thoughts were that it could be valve stem oil seals, but now leaning more towards it being the rings possibly due to it now working at normal operating temp and the oil being sucked up past the rings. When the plugs were romoved the rear 3 were slightly oily and sooted up but the front ones were nice and clean. Can the valve stem oil seals be replaced with the head still on? Am i right in thinking there is a special tool for this? Any opinions would be greatly appreciated Gavright, any help here would be greatly appreciated. Working on a rado vr at the moment, its just had the head gasket done Whilst it was being done it was found to have no thermostat. According to the owner this had been removed 2yrs previous due to overheating problems (which will explain why it always ran cold). The gasket didnt fail completely but had started to go and was losing a bit of water. Used a little bit of oil but nothing major, circa 1ltr per 1000miles which iirc is acceptable on a 160k engine which this is. Head was checked for trueness, all was fine and no cracks. H/G replaced as was new thermostat. Since this was done its started smoking quite heavily on overrun, most noticeable when changing donw through the gears and slowing down (like coming upto a roundabout or junction) Its using a fair bit of oil, the smoke out the back is mostly blue with a hint of white. Did a compression test and came up with the followingno1 cyl- 160spino2 cyl- 180psino3 cyl- 160psino4 cyl- 180psino5 cyl- 160psino6 cyl- 165psi According to autodata this seems to be within tolerance.Any ideas what this could be? initial thoughts were that it could be valve stem oil seals, but now leaning more towards it being the rings possibly due to it now working at normal operating temp and the oil being sucked up past the rings. When the plugs were romoved the rear 3 were slightly oily and sooted up but the front ones were nice and clean. Can the valve stem oil seals be replaced with the head still on? Am i right in thinking there is a special tool for this? Any opinions would be greatly appreciated Gav Switch to full edit form Link to post Share on other sites
lee060 3 Posted April 19, 2007 Report Share Posted April 19, 2007 were the valve stem seals not done as part of the course whilst the head was off?? . back three plugs slightly oil'ed , coencides with the ones with slightly lower compression . that shouts rings doesnt it?? is the engine brething heavy at all?? high crank case presure??let us know how you get on .liam Link to post Share on other sites
jaysVR6 2 Posted April 20, 2007 Report Share Posted April 20, 2007 http://www.vr6oc.com/e107_plugins/forum/forum_viewtopic.php?97545Check out the problems I had. Sounds like rings to me buddy. Link to post Share on other sites
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