Technical Yellow gunk/oil splashing into air box via crankcase breather, wtf...

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Technical Yellow gunk/oil splashing into air box via crankcase breather, wtf...

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Yellow gunk/oil splashing into air box via crankcase breather, wtf...
I replaced the crankcase cover gasket thinking it might of been that or the breather blocked which is no longer blocked aswell. is it piston rings need replacing? i'm replacing the main head gasket this weekend so should i replace the pistons aswell??
another symptom is a bad sounding grind noise on 1st rev before fully starting up... but it happens rarely.
Thanks
-mo :(
 
ANY HELP :bang:

I'd guess your replacement HG should cure that... or do you do loads of short journeys?

"another symptom is a bad sounding grind noise on 1st rev before fully starting up"

Possibly the starter motor... assuning the oil isnt totally waterlogged of course, in which case the HG change and fresh oil / filter will do the car wonders!
 
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I'd guess your replacement HG should cure that... or do you do loads of short journeys?

"another symptom is a bad sounding grind noise on 1st rev before fully starting up"

Possibly the starter motor... assuning the oil isnt totally waterlogged of course, in which case the HG change and fresh oil / filter will do the car wonders!
Thanks for your reply!

I just bought the car in that condition, and i think it did do short journeys as it was my neighbours car.
I hope thr new HG will fix it.
the grinding noise happens like once a week, so it's the starter motor? the car does drink all the water.. which is why i'm replacing head gasket aswell.
having trouble removing the oil drain on the sump too, gonna have to drill hole in oil filter for now... I guess.
and get a new sump?
 
I'd guess your replacement HG should cure that... or do you do loads of short journeys?

"another symptom is a bad sounding grind noise on 1st rev before fully starting up"

Possibly the starter motor... assuning the oil isnt totally waterlogged of course, in which case the HG change and fresh oil / filter will do the car wonders!
Hello again, I did the HG change, without skimming. Replaced valve stem seals. Cleaned head and block surface as much as i could, it was pretty clean. and suffer from coolant level dropping... white smoke and oil smoke. smoke coming out of valve cover breather, and through dipstick hole when i take it out... some random mis-firing on idle and around 2-3k revs or when revs are kept constant speed. i think the head is not flat... needs skimming? if i knew it was cheap is it i would of done it before...
would skimming fix these problems? I've spent so much time on this engine and i want to know if i should spend anymore or scrap it :(
Please help Foxy
 
I'd guess your replacement HG should cure that... or do you do loads of short journeys?

"another symptom is a bad sounding grind noise on 1st rev before fully starting up"

Possibly the starter motor... assuning the oil isnt totally waterlogged of course, in which case the HG change and fresh oil / filter will do the car wonders!
Some more info... i replaced the plugs aswell after HG change and they went oily real fast... pitch black at the tips. i think this is oil problem cos of head not being flat aswell as water going into cylinder and burned off? but i don't suffer the mayo stuff oil at all...
 
Some more info... i replaced the plugs aswell after HG change and they went oily real fast... pitch black at the tips. i think this is oil problem cos of head not being flat aswell as water going into cylinder and burned off? but i don't suffer the mayo stuff oil at all...

Should always always skim the head when the gasket is being replaced, they warp easily and the warping can be imperceptible to the naked eye, really needs a good looking at by an experienced engineer to see how much skimming is needed, its probably the best place to start, but its impossible to say if that is the only problem, maybe the valve stem seals are slack and leaky, could be bore wear or piston ring failure... depends on mileage and maintainance, or the lack of it before you got it.
 
Should always always skim the head when the gasket is being replaced, they warp easily and the warping can be imperceptible to the naked eye, really needs a good looking at by an experienced engineer to see how much skimming is needed, its probably the best place to start, but its impossible to say if that is the only problem, maybe the valve stem seals are slack and leaky, could be bore wear or piston ring failure... depends on mileage and maintainance, or the lack of it before you got it.
compression test was good, 213, 209, 219, 219
it has 85k
 
compression test was good, 213, 209, 219, 219
it has 85k

Number 2 is down, but not hugely without knowing what the "good" figure should be.
But oil leakage doesnt necessarily mean poor compression unless its the compression rings gone rather than the oil rings.
Possibly the head is warped between cylinders 1 & 2?
 
Number 2 is down, but not hugely without knowing what the "good" figure should be.
But oil leakage doesnt necessarily mean poor compression unless its the compression rings gone rather than the oil rings.
Possibly the head is warped between cylinders 1 & 2?
I see, i understand now. you may be right about the warp area!
there was a bunch of oil gathered around the exhaust for cylinder two and alot of oil in it the last time i took the head off.
I will try gettin it skimmed by a mechanic and see results from there. i really need this car...
 
I see, i understand now. you may be right about the warp area!
there was a bunch of oil gathered around the exhaust for cylinder two and alot of oil in it the last time i took the head off.
I will try gettin it skimmed by a mechanic and see results from there. i really need this car...

Have the valve seats checked & cut in or re-ground while the head is off and fit new valve stem seals too.
 
I have replaced the seals. why do i need to get the valve seats checked?

Just in case they are not seating & sealing properly, as the head is coming off it is the perfect time to do it TBH...especially as a machine shop may have the head for skimming.

Dont skimp on the re-assembly either, new Head gasket and bolts are needed as they stretch when torqued up, they need to be tightened in the correct sequence & to the right amount too or you could warp it again...
 
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Ok cool, much appreciation for your advice, Foxy. I will see if I can afford cost to do the valve seats

Dont miss this bit, I added it as an Edit..
"Dont skimp on the re-assembly either, new Head gasket and bolts are needed as they stretch when torqued up, they need to be tightened in the correct sequence & to the right amount too or you could warp it again..."
 
Dont miss this bit, I added it as an Edit..
"Dont skimp on the re-assembly either, new Head gasket and bolts are needed as they stretch when torqued up, they need to be tightened in the correct sequence & to the right amount too or you could warp it again..."
Yes of course! I've taken the head off twice already and have to take it off a 3rd time.. been through 2 sets of head bolts. need to order another set again. and new head gasket.
I torque them up as accurately as i can.. with some tip-ex for the angle turns tehee.
 
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