It's burning oil, let's make the best of it.
#1
Registered User
Thread Starter
It's burning oil, let's make the best of it.
I've isolated my oil burning to cylinder 4. My plug in that cylinder fouls weekly. I changed over to 10w-40 oil and that cut oil consumption and start-up smoke to less than a quart a month which is better than the quart a week i was getting from 5w-30. Because heavy weight oil stops the burning, it's only in one cylinder, and the car hasn't lost any power. I'm assuming it's the valve seal, although if it could be something else please tell me other possibilities. If no one can say against the valve seals I was planning to redo them with a maximum $800 budget to make the most of going into the valve covers and doing it the rope trick way. I was planning on buying the supertech valve seals, new valve cover gaskets, and the motordyne 5/6 copper isothermal plenum spacer since I have to remove the plenum anyway. If changing out the valve seals sounds good does anyone know of any other good mods or things to replace while I'm in there? Thank you for any input
#3
Registered User
Thread Starter
Valve seals with the heads on only takes about six hours and costs at minimum $100. An engine swap would take quite a bit longer especially for me, and the best deals I've been able to find were about $1000 for a 60k engine. I only have 150k on an engine that has lasted alot longer, until I get enough money to swap for a fully built vq, I'm not really wanting to f**k around replacing stock parts with stock parts. It may well come to a full out swap being needed but like I said all I have is about $800
#5
New Member
I'd leak down test it before anything
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#8
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#10
Registered User
Thread Starter
Thats what I was going to do, but now that Im swapping new spark plugs into cylinder four every week after driving maybe 200 miles tops its becoming a massive nuisance.
#12
New Member
iTrader: (18)
Could just be the spark plug seal. I guess you will find out. Sounds feasible but I don't recall anyone posting up that they have done it... The leakdown will let you know if it's the cylinder ring vs valve seal, but u could just do a compression test and if that checks out then go on ahead.
#13
Registered User
iTrader: (2)
Could just be the spark plug seal. I guess you will find out. Sounds feasible but I don't recall anyone posting up that they have done it... The leakdown will let you know if it's the cylinder ring vs valve seal, but u could just do a compression test and if that checks out then go on ahead.
+1 on figuring out if it's rings or valves.
#16
Registered User
iTrader: (2)
Black stone lab oil tests are cheap and they should pick up if things are getting burnt up.
Also I think every DIY car owner can afford a cheap usb borescope. They're pretty low resolution, but for $20 you would see that without a tear down.
Just food for thought for anyone else that might be in that situation. Save yourself the hassle of a teardown.
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