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General Category => General Discussion => Topic started by: chapingo17 on 2017-03-14 00:09

Title: Y block oil pump leak
Post by: chapingo17 on 2017-03-14 00:09
I have a 57 fairlane I keep on installing different types of gaskets, rtv by itself, rtv and gasket. I keep on getting a leak  at the oil pump seal. Any tips on what to use? Keeps on leaking oil no matter what I use.
Title: Re: Y block oil pump leak
Post by: hiball3985 on 2017-03-14 07:42
Are talking about the gasket between the pump and block or the round seal on the oil transfer tube behind the big nut?
Title: Re: Y block oil pump leak
Post by: chapingo17 on 2017-03-14 12:59
I'm talking about the seal between pump and block.
Title: Re: Y block oil pump leak
Post by: hiball3985 on 2017-03-14 14:43
From here I can only guess. If both surfaces are flat it should seal with a gasket, I never use RTV  or other sealer on that gasket. Is it possible one or more of the bolts are too long? Dirt or something in the bottom of the threaded holes preventing the bolts from reaching full clamping force?
Title: Re: Y block oil pump leak
Post by: chapingo17 on 2017-03-14 19:29
Next oil change I will check for flatness on oil pump's surface and maybe block.
Title: Re: Y block oil pump leak
Post by: Hoosier Hurricane on 2017-03-15 07:22
Look carefully at the back corner of the engine.  If the rocker cover has a leak in the lower corner, it will run down over the oil pump before it drips off.  Also, make absolutely sure that there isn't a piece of old gasket stuck to the block or pump.   John
Title: Re: Y block oil pump leak
Post by: chapingo17 on 2017-03-15 18:52
I did notice the valve cover.
Title: Re: Y block oil pump leak
Post by: clusterbuster on 2017-03-15 19:19
I will go with the Hurricane and others. After doing all you have done, I would think you have a leak elsewhere. I don't think the block would warp at that area.
Title: Re: Y block oil pump leak
Post by: Hoosier Hurricane on 2017-03-16 07:44
I had another thought.  Make sure the oil filter adaptor plate is not leaking.  A common spot for a Y Block oil leak.   John
Title: Re: Y block oil pump leak
Post by: jumping jack flash on 2017-03-18 16:22
And don't over tighten the nut that secures the pick up tube to the pump. It is a common mistake that splits the rubber seal.
Title: Re: Y block oil pump leak
Post by: chapingo17 on 2017-03-19 19:47
I will start from the beginning and figure out were the leak is coming from will keep up all posted.
Title: Re: Y block oil pump leak
Post by: chapingo17 on 2017-03-28 18:02
I found a small leak coming from the oil pump but most of it is coming from the plate oil filter attaches to. I have tried different things to seal it but is not working. I seated o-ring multiple times but no luck. Coat it with high tack but nothing works.
Title: Re: Y block oil pump leak
Post by: Marc on 2017-03-28 21:55
I had a similar problem years ago. If I remember correctly there's an article on the y-blocks forever forum that describes how to check your oil filter adapter to verify it's not warped. In my case I tried the same things you tried, but finally was able to fix it by using the gasket they sell to fit under the old canister style filter housing. Not sure how that's different than the gasket they sell to fit under the adapter, but it did the trick. Don't use rtv or anything on the gasket, just a light coat of oil.
Title: Re: Y block oil pump leak
Post by: chapingo17 on 2017-03-29 02:38
Thanks for the heads up. I will look into that.
Title: Re: Y block oil pump leak
Post by: geraldchainsaw on 2017-03-29 08:07
i guess someone better explain to me how u an check the oil pump all the time,  i thought it was inside the oil pan,  sounds more to me about the oil filter and not getting  the gasket off  the oil filter and stuck on the block,  and u might not have noticed when u changed oil filters,  like i ssaid someone explain to me about whetre the oil  pump is on the outside?,  thanks    jerry
Title: Re: Y block oil pump leak
Post by: clusterbuster on 2017-03-29 08:59
Yep, the oil pump is on the outside. On the drivers side of the oil pan you will see a tube that fastens to the oil pump
Title: Re: Y block oil pump leak
Post by: hiball3985 on 2017-03-29 09:45
Leaking at the adapter is a known problem with after market adapters made in China. Do you know if you have an original or and after market?
Title: Re: Y block oil pump leak
Post by: chapingo17 on 2017-03-29 18:47
Is American. I pulled it apart and checked flatness on plate will try it again.