#31: Re: Milky/muddy engine oil please help! Author: jamie_206, Location: DoncasterPosted: Tue Dec 21, 2010 7:01 am ---- Jus looked in the haynes and it says (when doing a compresion test) low compresion on the 1st stroke which does not build up pressure during sucsessive strokes indicates leaking valves or blown head gasket .
Then goes on to say . A low reading from 2 adjacent cylinders is almost certainly due to the head gasket having blown between them .
So im going to try get it preasure tested and let you guys know the results.
#32: Re: Milky/muddy engine oil please help! Author: panason1c, Location: SomersetPosted: Tue Dec 21, 2010 7:12 am ---- A compression test doesnt always tell the whole story......there is a varying range of 'symptoms' when a HG fails, all depending at what point the gasket has failed at..............if the HG has failed at a point between the water jacket and an oilway (as sounds the case for your car) you will get 'oily coolant' and 'mayonaise' in the engine but the compression readings will show as 'normal' due to no leakage of compression. Last edited by panason1c on Tue Dec 21, 2010 7:15 am; edited 1 time in total
#33: Re: Milky/muddy engine oil please help! Author: DJ-, Location: UKPosted: Tue Dec 21, 2010 7:14 am ---- what if a compression test failed on 1 cylinder yet the oil and coolant etc looked fine?
#34: Re: Milky/muddy engine oil please help! Author: panason1c, Location: SomersetPosted: Tue Dec 21, 2010 7:17 am ----
DJ- wrote:
what if a compression test failed on 1 cylinder yet the oil and coolant etc looked fine?
That would most likely be a valve that has failed (burnt out) or a valve spring broken. Last edited by panason1c on Tue Dec 21, 2010 7:18 am; edited 1 time in total
#35: Re: Milky/muddy engine oil please help! Author: DJ-, Location: UKPosted: Tue Dec 21, 2010 7:17 am ----
panason1c wrote:
DJ- wrote:
what if a compression test failed on 1 cylinder yet the oil and coolant etc looked fine?
That would most likely be a valve that has failed (burnt out)
oww
#36: Re: Milky/muddy engine oil please help! Author: Seabook, Posted: Tue Dec 21, 2010 7:21 am ----
DJ- wrote:
panason1c wrote:
DJ- wrote:
what if a compression test failed on 1 cylinder yet the oil and coolant etc looked fine?
That would most likely be a valve that has failed (burnt out)
oww
i though you just bought your car?
#37: Re: Milky/muddy engine oil please help! Author: DJ-, Location: UKPosted: Tue Dec 21, 2010 7:22 am ----
Seabook wrote:
DJ- wrote:
panason1c wrote:
DJ- wrote:
what if a compression test failed on 1 cylinder yet the oil and coolant etc looked fine?
That would most likely be a valve that has failed (burnt out)
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