Insane Oil Consumption


DV8

DV8

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Hi Guys,

having some problems and am hoping people can offer me some advice on what checks I should get done to determine what the issue is (not looking for scaremongering - just sound advice :nice:)

Bit of history on the engine - was bought off a reputable seller on here a few months back as an upgrade and is stroked/rebuilt using a Spoon stroker kit (to what degree and by who is unknown). Was informed the Engine was a relatively new build (around 10000 miles). Engine also uses a B18C Spoon ECU and feels very strong.

The issue is the car is using/burning oil very quickly (checked for leaks and no obvious signs). Also I seem to be getting a fair amount of smoke in VTEC, getting a mechanic mate of mine to follow me later on hopefully to take a closer look.

Oil used is 5w-40 Mobil Fully Synth which I ran without a hitch in my B16B.

Any thoughts/suggestions appreciated. :nice:
 
head gasket might be the issue mate, any milkyness condesation etc in the oil cap? usually smoke out the exhaust and burning a lot of oil is signs of the gasket, expecially on an engine that has been rebuilt. worth a check mate.hope u find the problem :)
 
How much consumption we talking here?

How much oil per 1000 miles.

Valve stem seals and piston rings are main causes of burning oil on these engines. Incorrect management can also cause overfueling and 'borewashing' which will also kill abit of oil.

Your using good oil, so really next step is how much is your consumption.
 
does it smoke under hard load when not in VTEC?? if it just when your in VTEC then its your valve stem seals, i had this problem with mine!

if it smokes under hard load no matter what then its your rings!
 
Jimbo said:
does it smoke under hard load when not in VTEC?? if it just when your in VTEC then its your valve stem seals, i had this problem with mine!

if it smokes under hard load no matter what then its your rings!
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As he said. If it's dark smoke oil is being burnt. White smoke is your head gasket. Unlikely to be the head gasket though as you'd have over heating problems too. Piston rings or valve stem seals. Did you check the spark plugs for oil? Either way there's a oil leak going to the combustion chamber and this the reason for your oil consumption. I'd put my money on rings. They're known to go but not usually on that low of mileage but could be due to the gapping on the rings not being done properly
 
Thanks for all the thoughts guys, very useful.

Can't tell you how much consumption really, it's ridiculously high. I'd say around half a litre every 50 miles. Also have spots of oil all over the rear of the car.

After talking to a couple of mechanically minded buddies of mine we are leaning towards Valve stem seals too as the bottom end was probably rebuilt without any attention paid to the head. Smoking only occurs in VTEC currently.

Will check the plugs and get a Compression/Leakdown test done just to be sure though.
 
Can you find out more info on who built it and what machine shop they used. I'm 90% it could be down to a bad hone (providing the cylinder's were not out of round). The thing with high reving engines is that the honing finish has to be right and most machine shops do not have the right equipment for a high reving Honda.
 
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or rings havnt been set properly on run in etc
 
have you tried not using 5W-40 and fully syn?


Put some 10w-40 magnatec in it and see how it goes
 
I have more or less the same issue with my newly built b18c. Smokes mainly in vtec, and when under load when cold but none on the overrun. Im thinking along the lines that i have glazed the bores not seated the rings in properly.

Mine only burning say at most 1litre evey 500miles.
 
Tmus said:
have you tried not using 5W-40 and fully syn?


Put some 10w-40 magnatec in it and see how it goes
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castrol magnatec? ****ing pish oil, will burn it in 10 mins if the engine is burning it.


any good fully synthetic oil is much better. FUCHS super race titan is the best iv used.
 
Rich777 said:
Can you find out more info on who built it and what machine shop they used. I'm 90% it could be down to a bad hone (providing the cylinder's were not out of round). The thing with high reving engines is that the honing finish has to be right and most machine shops do not have the right equipment for a high reving Honda.
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All the work was done in Japan so sadly I will never know... :((

I'm still leaning towards Valve stem seals to be honest (and hoping it's this over a piston ring issue).

Will update after further investigation, thanks again guys.
 
If it was valve steam seals your B16B would have burnt oil as well surely.

Piston rings/bore glazing is my bet.
 
689R said:
castrol magnatec? ****ing pish oil, will burn it in 10 mins if the engine is burning it.


any good fully synthetic oil is much better. FUCHS super race titan is the best iv used.
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Agreed... think sadly this problem is beyond anything an oil change will help with.
 
689R said:
If it was valve steam seals your B16B would have burnt oil as well surely.

Piston rings/bore glazing is my bet.
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It was a complete swap/different engine. My B16B sold a few weeks back and that was solid as a rock...

I'm not writing the piston rings off, just hoping it's the cheaper of the two if yah get me? :lol:
 
Ahhhh sorry man, I thought you only swapped the bottom end. Didnt realise it was a full new engine.


I hope its the valve steams in that case too aha.
 
689R said:
castrol magnatec? ****ing pish oil, will burn it in 10 mins if the engine is burning it.


any good fully synthetic oil is much better. FUCHS super race titan is the best iv used.
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how can you say it is ****? and why would it burn it in 10mins?

and what makes you think fully synthetic is much better for the engine he is using?

I think that problem and i think he should try using a 10W-40 grade semi synythetic.


and you got to be kidding me you can tell which oil makes your car perform better.
 
Tmus said:
how can you say it is ****? and why would it burn it in 10mins?

and what makes you think fully synthetic is much better for the engine he is using?

I think that problem and i think he should try using a 10W-40 grade semi synythetic.


and you got to be kidding me you can tell which oil makes your car perform better.
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Are you actually joking? I am obviously not referring to performance, but Oil life/duration. Castrol magnetic is cheap ****.

Oilman on here(and nearly all honda forums, who spends day in day out researching and selling oil) recommends 5-40w fully synthetic for these engines.

No matter what kind of oil, 500ml of oil in 50 miles will not be solved by an oil change.

Do your research before you try and come across as a smart arse.
 
lol, ok whatever, its just a suggestion for the OP if he decides to take it or not

oil man would recommend it now wouldn't he.

then why do you think its the best oil you use?

fact is more oil change is better than longer intervals

you can think what you like about castrol and pay a premium for Full Syn oils.
 
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