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I have a 2013 GS with trick flow heads and medium cam ( cant remeber the exact specs ). The car have been burning a lot of oil. There is no leaks at all. I have little smoke and I think its because I dont have cats on. A little black smoke at WOT. So, does anyone know where the oil might go and how it will affect the engine?
I have a 2013 GS with trick flow heads and medium cam ( cant remeber the exact specs ). The car have been burning a lot of oil. There is no leaks at all. I have little smoke and I think its because I dont have cats on. A little black smoke at WOT. So, does anyone know where the oil might go and how it will affect the engine?
Thank you
If there's no external leakage & you're running aftermarket heads, I'd suspect bad valve guides or rings. Best to have a leak down test done at a reputable shop.
If there's no external leakage & you're running aftermarket heads, I'd suspect bad valve guides or rings. Best to have a leak down test done at a reputable shop.
If there's no external leakage & you're running aftermarket heads, I'd suspect bad valve guides or rings. Best to have a leak down test done at a reputable shop.
Might also be helpful to know how much "burning a lot of oil" is?
1qt every 100 miles?
1qt ever 500 miles?
1qt every 1000 miles?
Last edited by Kent1999; Mar 29, 2016 at 05:24 PM.
I don't know exactly, but its like 1qt every 300 miles😥
That is indeed a lot. Mine doesn't use a noticeable amount between changes. Better get it checked out ... must have something to do with the engine mods you did. Was the cam, etc., done recently enough that you can take it back to the shop under warranty? Presumably you had no oil consumption problems before the mods.
Black smoke is generally fuel and blue smoke oil. Any blue smoke? And I think white smoke could be water mixing in, and possibly head gasket issues.
1qt every 300 miles? if its that much you need and engine rebuild,the rings are shot,you would be leaving smoke out the tailpipe every time you step on the gas. I hope it's not that bad.
Last edited by Don-Vette; Mar 30, 2016 at 05:56 AM.
when I put the TF heads on my car I faced this issue
smoke + burning oil. After a long search and calling Trick Flow CS, they told us that we should put a Teflon thread sealant on the bolts of intake rocker arms to stop oil leaking in the top of the heads.
** Sorry if I'm not that in English but I hope that you can understand me
If using aftermarket ported cylinder heads, check to see if the intake rocker bolt holes are open to the intake runners. If so, you’ll need to apply thread sealant to the intake rocker bolt threads. OE head intake rocker bolt holes are generally not open to the runners.
If you are using a quart about every 300 miles, if it is going out the exhaust, the rear of your vette will be very oily. Wipe your finger, if it looks like dirt and Mobil 1, you know it is not a leak.
Obviously, you should see some drips if it is leaking externally too.
I would pull the plugs and do a compression check, and you can then compare cylinders too. Meaning, if the compression/plugs all are about the same, you have a different issue than if one (or more) is really oily/black looking/low compression.
That will help you answer some of the other comments above too.
From: Middle TN by way of KY, OH, VA, IL, CA, FL, NY, SC, HI
Originally Posted by Seadawg
If you are using a quart about every 300 miles, if it is going out the exhaust, the rear of your vette will be very oily. Wipe your finger, if it looks like dirt and Mobil 1, you know it is not a leak.
Obviously, you should see some drips if it is leaking externally too.
I would pull the plugs and do a compression check, and you can then compare cylinders too. Meaning, if the compression/plugs all are about the same, you have a different issue than if one (or more) is really oily/black looking/low compression.
That will help you answer some of the other comments above too.
There is truth above. You cannot leak a quart each 300 miles and not have the EPA following you around (figuratively, of course).
One quart every 300 miles is going out your tailpipe, and will not have a good result long-term. FWIW, my 93,000 mile LS2 uses no oil between changes (I log the dipstick level at each change).
One good easy and gross check is the coast down check, as follows: have someone drive your car at highway speeds on an open lightly travelled road in daylight, and you follow them closely.
Get up to highway speed and drive at a steady speed for awhile on a level stretch, then foot off the gas pedal and let the car coast down to around 30 mph or so (this works better with a manual tranny), then stomp on the gas. You in the following look for a puff of blue (oil) smoke.
The coasting results in a low vacuum in the cylinders, and oil leak paths will be accelerated, and oil will be drawn into the cylinders which will then burn, resulting in a blue puff out the tailpipe.
Like I said, it's a gross test, but at one quart each 300 miles, you'll see it.
Also, your spark plugs are almost certainly fouled at that burn rate, so pull them and have a look.
Last edited by Easy Rhino; Mar 30, 2016 at 07:34 PM.
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Oil consumption
