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Post by trevnar on Jan 20, 2012 9:37:14 GMT -6
(50 to 150 conversation) GY6 150 oil every where found the exost came loose the. Whent to tighten it the head gasket had blown out the bottom and notest that it cam out of the intake manifold between the head and it. is there a reason its not releasing pressure and yes its brad new  please help put new air filter on it and the exost is modified off the old 50 engine only straight were added to make it fit and packing was removed from the muffler What could it have been ? |
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Post by silverfox96 on Jan 20, 2012 10:41:24 GMT -6
There are many on here that are much more knowledgable than I, but it seems to me that there are only a couple of things that would cause the engine oil to blow all over everything as you have stated. One thing it could be is the vaccum hose from your intake to the valve cover could be plugged or maybe hooked to the wrong place. The other obvious thing would be considerable blow-by, which would indicate iether unseated rings or bad rings. I hope someone else can jump in here and help you a bit more.
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Post by sprocket on Jan 20, 2012 11:14:17 GMT -6
Check your oil level in the sump... if you have too much the engine gets over pressurized and it will blow oil like that.. or a gasket..which isn't good. You should only have 750ml of oil in a 150cc GY6
You will have trouble with anything but an exhaust designed for a 150 also...the engine won't run right. It doesn't have to be a stock exhaust there are good free flow exhausts on the market, but you need a balance between the exhaust and the intake.. loose that and the engine won't run right..
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Post by trevnar on Jan 20, 2012 12:04:58 GMT -6
It ran grate for like 6 miles and we did the full tank idle brake in
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Post by trevnar on Jan 20, 2012 12:05:03 GMT -6
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Post by sprocket on Jan 20, 2012 13:30:53 GMT -6
That is the worst break in possible for a GY6 engine... sounds like your rings have never seated and you have blow by now...
These engines need a medium hard break in with lots of speed variations and hot and cold cycles...for about 50 to 100 miles...also only dino oil is recommended until 1000 miles...
Should do a 'holding' compression check on a hot engine and see if the pressure drops after about a minute...
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Post by trevnar on Jan 20, 2012 13:32:19 GMT -6
Could this be the problum?
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Post by sprocket on Jan 20, 2012 13:36:26 GMT -6
Is that where the oil is coming from? That is the valve cover vent hose and yes it should be attached and NOT blocked off...
BUT...there should only be a bit of milky white oil and water mix coming from there. Perhaps a couple of ounces a MONTH...any more and you are either over pressurized or you have blow by...
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Post by trevnar on Jan 20, 2012 13:38:14 GMT -6
Well the bottom part of the head gasket blew out thats where the oil came frum so what is the mane vent i kneed to look at to see if its cloged
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Post by sprocket on Jan 20, 2012 13:40:11 GMT -6
The vent in the photo you posted...where the hose isn't attached...that barb must be open
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Post by sprocket on Jan 20, 2012 13:41:36 GMT -6
The head gasket blew out?? or the valve cover gasket??
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Post by trevnar on Jan 20, 2012 13:46:36 GMT -6
Its right above where the exost is
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Post by Alleyoop on Jan 20, 2012 13:56:13 GMT -6
Are you sure the gasket is blown having that HOSE off all the oil from the Valve cover NIPPLE will blow out and make it look like the head gasket is blown. Connect that hose and do this DISCONNECT the hose from the other END and put a Fuel Filter on the end of it and TIE IT up HIGH DO NOT KINK the HOSE it has to BE ABLE TO VENT into the AIR to RELIEVE pressure.
Then Block the Hose on the Air Filter it came off. Clean it up and check the Oil Level make sure it is not low OR OVERFILLED and see if it runs and see where the oil is coming out of IF it blew the head gasket. Like I said it may just be the OIL that came out of the Valve Cover Breather NIPPLE.
Alleyoop
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Post by trevnar on Jan 20, 2012 13:57:00 GMT -6
O i gess its the valve cover gasket i think
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Post by Alleyoop on Jan 20, 2012 13:58:40 GMT -6
Good so do what I mentioned in the previous post and crank it up and see if oil is leaking from the Valve cover gasket.
Alleyoop
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please help put new air filter on it and the exost is modified off the old 50 engine only straight were added to make it fit and packing was removed from the muffler 
..BAD TO THE BONE..