do a compression test, you most likely have worn rings.
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| Author: | dc4241201 [ Mon Aug 17, 2009 5:22 pm ] |
| Post subject: | oil burn |
i have a 69 cuda with a 76 super six it has burning oil puffing out the oil fill stem on the valve cover any suggestions? |
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| Author: | terrylittlejohn [ Mon Aug 17, 2009 5:56 pm ] |
| Post subject: | |
do a compression test, you most likely have worn rings.
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| Author: | dc4241201 [ Mon Aug 17, 2009 5:59 pm ] |
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thats what im thinking too |
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| Author: | 66aCUDA [ Mon Aug 17, 2009 6:29 pm ] |
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Leak down test maybe just needs valve adjustment. Frank |
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| Author: | Aggressive Ted [ Mon Aug 17, 2009 9:33 pm ] |
| Post subject: | |
Be sure the PCV line is not plugged and the PCV valve is working properly. Even a new motor will puke oil if it is not vented correctly. The more HP the worse it can become. Depending on the engine care and type of oil and driving habits, thermostat temp, the oil rings could be plugged with carbon deposits. Start it on a diet of Rislone to clean them out. |
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| Author: | dc4241201 [ Tue Aug 18, 2009 4:25 am ] |
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pcv would be too easy, no? |
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| Author: | dc4241201 [ Tue Aug 18, 2009 4:38 am ] |
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the pcv valve seems fine the ball moves when i shake it |
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| Author: | dc4241201 [ Tue Aug 18, 2009 5:52 am ] |
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a new pcv valve and rislone oil treatment seamed to have lessened the smoke out of the oil stem lets see how this week goes still have a rough idle in drive she likes to stall idle rpm is 1000 but 700-800 in drive when stopped |
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| Author: | Aggressive Ted [ Tue Aug 18, 2009 10:43 am ] |
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Good! A little high on the idle..... What do you have it timed at? Rislone is a good safe start. A quart of synthetic oil per change will also clean out the oil rings. Both are very gradual so the filter will take out the debris over time. I have saved many engines that were once neglected or didn't have good maintenance. Transmission fluid will also work but it is allot more aggressive and could cause problems if you use too much at once. A cup will go along way. Hopefully the engine is not doing short hops and it gets throughly warmed up. Long trips will show the biggest improvements. Hopefully your running a 195 degree stat. 180 degree is the lowest I would go. |
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| Author: | dc4241201 [ Tue Aug 18, 2009 11:37 am ] |
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stat is 180 oil pressure in neutral is 80 anything lower than 1000 rpm it stalls out 1200/1600 hi stall converter b&m shift kit msd ignition flamthrower coil plugs are autolite 25 and oil is royal purple 10/40 |
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| Author: | Aggressive Ted [ Tue Aug 18, 2009 11:57 am ] |
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With that high of oil pressure you may loose your oil pump gear unless you have one of Doc's hardened gears. My buddy that races just found out the hard way on his SL6. Is this engine a tired stock engine that was modified or new and built for racing? |
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| Author: | dc4241201 [ Tue Aug 18, 2009 12:23 pm ] |
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a tired rebuilt and modified by the previous owner i wanna swap out to a 408 blueprinted from jegs |
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| Author: | Doc [ Tue Aug 18, 2009 12:53 pm ] |
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Another vote for readjusting the valve lash... run them as loose as you can. Do you know what cam is in the engine? DD |
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