Engine Covered In Oil After 4 Miles.
#1
Posted 08 August 2018 - 07:25 PM
So as I didn't put engine in ,decided to remove head today.
Pistons are +20 though, number 1 and 2 piston have no carbon build up, and 3 & 4 are covered in carbon.
The valves in the head are opposite, 1 & 2 both sets carbon ed up ,3 & 4 no carbon.
Have noticed there is no breather on timing chain cover.
Any comments would be appreciated. Thanks
#2
Posted 08 August 2018 - 07:47 PM
Hi,
What breathers have you got on the engine and how are they plumber in?
Cheers
#3
Posted 08 August 2018 - 07:59 PM
Regards
#4
Posted 08 August 2018 - 08:01 PM
#5
Posted 08 August 2018 - 08:03 PM
Just noticed in title it should read after 4 miles.
I'll sort that for you.
#6
Posted 08 August 2018 - 09:05 PM
Probably should have taken a few more tests before removing head. ie, leak down test. Sounds to me as though it could be worn rings and pressuring crankcase.
#7
Posted 09 August 2018 - 05:49 AM
Clean pistons on two and carbon on two sounds like head gasket leak on the two clean pistons
water cleans off carbon
Simples!
#8
Posted 09 August 2018 - 05:50 AM
worst case scenario
cracked head
#9
Posted 09 August 2018 - 09:15 AM
Probably should have taken a few more tests before removing head. ie, leak down test. Sounds to me as though it could be worn rings and pressuring crankcase.
What Russo said.
#10
Posted 09 August 2018 - 09:22 AM
Pistons are +20 though, number 1 and 2 piston have no carbon build up, and 3 & 4 are covered in carbon.
The valves in the head are opposite, 1 & 2 both sets carbon ed up ,3 & 4 no carbon.
Clean pistons on two and carbon on two sounds like head gasket leak on the two clean pistons
water cleans off carbon
Simples!
So you are saying a head gasket leak cleaned the carbon off of pistons 1 and 2 and the valves of 3 and 4 but not pistons 3 and 4 or the valves of 1 and 2?
#11
Posted 09 August 2018 - 11:44 AM
Attached Files
#12
Posted 09 August 2018 - 04:45 PM
yes for sure have done head gaskets over the years, water will clean deposits in combustion chamber and pressurise crankcase if a multiple leak
picture of valve is not combustion chamber so cant tell, wouldn't expect carbon round springs unless a build up of sludge from bad maintenance
As Russo said would have been good to have had further tests before dismantling.
But you've got what you've got and have to go with it
I would start with having a good look at head and block you can generally see where the problem was then clean head and block down using 600 grade wet and dry a block and light oil. wipe clean use a magnifying glass check between pistons at the thinnest point for any fractures. same with the head.
cant find nothing get head skimmed
check bores and tolerances for pistons
If you do find fractures its not the end of the world they can be welded and ground down
good luck
like to hear the result
#13
Posted 09 August 2018 - 05:40 PM
Further on ,Exhaust valves 1,5 and 8 look like this
hard to tell from the picture, but is it showing the head of the valve stem looking like it's been pounded with a club hammer ?
#14
Posted 09 August 2018 - 07:48 PM
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