I just added Mobile 1 Extended Performance 10w-30 full synthetic to my b18c-r. However I noticed I had oil consumption pretty bad from the last oil change, so I went with Mobile 1. I ran the car yesterday and it wasn't smoking at all, had someone sit behind and still nothing at all, however is back again today. When I'm flooring it and hitting vtec it DOES NOT smoke, it starts to smoke at my shifts at 8,500 rpms, not when vtec engages. I checked the compression yesterday and it put 250-240-240-250. I don't know what to think of anymore. By the way it's puff blue smoke when shifting at 8,500, if I shift before that there is no smoke. I also took it to 8,500 without shifting and it smokes even when not shifting, I guess when going that high it smokes. Any shifting before or anything before, no smoke. Any idea what might be the problem?
Smoking in high rpms
- Thread starter eksouljah
- Start date
I may be wrong but i think what is happening is your oil is leaking past your piston rings and getting into the engine cylinder and mixing with your fuel and ultimately burning along with the petrol. That leakage is getting compressed with the petrol in the combustion chamber and the burned oil makes the blue smoke. Your car is probably running rather rough too. If it isn't yet it wont be long and it will evetually cause the oil to break down loosing its viscocity and not properly lubricating the pistons. Because what is also happening is some of the gas is leaking past those rings too in the opposite direction and mixing with the oil in your crankcase and thinning it out. When this happens the engine will overheat from excessive friction and it will seize.
Well I just figured this chain. The day it wasn't smoking it was cool evening outside around 6-7pm, that same day around 4-5pm it smoked. Today is the reason I posted this up is because it was smoking again in warm, hot weather. Now I just went tested it a few times now that it's cool outside and there's no smoke at all. WTF. By the way I have hytech 3 inch headers if that matters because I heard they cause alot of heat.
basically what im tryna say is or come to think,it smokes in hot/warm weather past 8k rpms because is so hot the viscosity of the oil changes, and them hy\tech headers arent a joke..i can litearlly cook bbq under my hood lol.
now in cool weather, the oil is much cooler and maybe its causing it to not breakdown and get past the rings? idk..
MY big concern is, how is it the rings going bad when my compression came out pretty much 250 across the board on a warm engine??
now in cool weather, the oil is much cooler and maybe its causing it to not breakdown and get past the rings? idk..
MY big concern is, how is it the rings going bad when my compression came out pretty much 250 across the board on a warm engine??
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high rpms = oil consumption
not news around here, lol.
what you see is only part of the story, its burning oil as much or more during accelerating, its just much harder to see due to exhaust speed at the tail pipe. When you let off the gas the exhaust speed is reduced and you see a plume of smoke which goes away just as fast as it showed up. better to burn a tad over nothing at all.
hondas burn oil when they are driven hard.
not news around here, lol.
what you see is only part of the story, its burning oil as much or more during accelerating, its just much harder to see due to exhaust speed at the tail pipe. When you let off the gas the exhaust speed is reduced and you see a plume of smoke which goes away just as fast as it showed up. better to burn a tad over nothing at all.
hondas burn oil when they are driven hard.
i get that type r burn oil as it is.
this is my problem tho. last oil change i only got 2,500 miles out of it before i was empty to the floor. that was on royal purple and i hesard that **** sucks on hondas.
so i go with mobil 1, now WHAT I HAVE SEEN, NOT SURE...smokes in hot/warm weather, when outside temp is cool, no smoke comes out. does that make sense to anyone? also i re-call the only at 8,500 rpms smoking. i downshifted from 2nd to 1st at 32mph when it was hot outrside it smokes starting 8k. so 8k on plus...
it seems that it does when im shifting by lettin go of gas, but i also tried just taking it to 8,500 and no shifting, just let it slow down on its own and it smoked but not as much as when i shift ...now when im shifting, thats a diff story... it smokes but its also never alot...just smoke for a quick 2-3 seconds.
thx for all the help, hondatech people would have been talking their **** already lol
bottom line is
i heard pistong rings when they go bad, u have the following
-low compression...but my numbers were great, 250 across...
-constantly smoking while idle, crusing.., not just past 8k...
when is valve seals
-smoke at cold start up..- I DONT HAVE THAT...
i only smoke past 8k for 2-3 secs but im concerened thats whats causing my low level of oil, but why? if my compression test was done 3 times to be sure and it came out good?
Last edited:
Josh_EK9
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The best advice I can give you if you are really concerned is to "perform a leak down test". This is when the piston is at top dead center for the compression stroke. Remove the spark plugs and apply sealed air pressure into the combustion chambers. Also remove the pcv. You can determine where the leak is coming from by the sound of the air escaping. via air from another cylinder, pcv, breather on valve cover. This will help, but I agree and think you are burning oil by "blow by" from your rings. This is normal in older engines, plus a small amount of oil is supposed to constantly line the cylinder walls. Again this is normal, no major reason to be concerned.
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That oil is too thin for these engines, use either 10w40 or 5w40. Older engines use a bit more oil and tend to smoke at high rpms eventually, if it gets really bad even using 10w40 then its a rebuild with new piston rings and valve stem seals usually
Switch to 10w40 and see if it makes a difference
Switch to 10w40 and see if it makes a difference
i rock 10w30 mobil 1 synthetic and i burn oil at HIGH rpm on the track.. my car gets a beat down every month. I usually catch it at deceleration or between shifts in that RPM range.
its nothing out of the ordinary.. like said above these things burn oil. just keep an eye on thigns
its nothing out of the ordinary.. like said above these things burn oil. just keep an eye on thigns
grimo35
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sounds like valve stem oil seals 5w 10w-40 oil is the same once the engine is warm
if you go down a hill foot of the pedals in say 3rd or 4th gear under 4k then once u get to the bottom give it full throttle in the same gear if their is a cloud off smoke then its the rings
even try 5w50 oil it might help it so u can save up for the rebuild
if you go down a hill foot of the pedals in say 3rd or 4th gear under 4k then once u get to the bottom give it full throttle in the same gear if their is a cloud off smoke then its the rings
even try 5w50 oil it might help it so u can save up for the rebuild
SiW
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As mentioned get a leakdown test done, takes a lot of speculation out of diagnosis. If your seeing blue smoke then that is oil burning, so that is why the level goes down.
Could just be normal, or could be excessive, again the only way to really know for sure is get a leakdown test done. You want to aim for under around 8-10% leakage IIRC.
Could just be normal, or could be excessive, again the only way to really know for sure is get a leakdown test done. You want to aim for under around 8-10% leakage IIRC.
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yeah thats what i'd say...
I had an EG6 with feels valve train... cam's, retainers, valve springs the lot...
It had a redline of 9400RPM... It too would smoke NOT in Vtec but at 9000RPM + and it was exactly what you were describing little faint plume of smoke when you change gear... bluish grey smoke...
Just get some new stem seals... I have been informed that Viton are as good as OEM honda
here you go buddy....
HONDA VALVE STEM SEALS KIT OEM VITON B16/B18
lol if you have a read it even states "oil consumption and smoke at high RPM"
I'd be willing to bet 95% its stem seals...