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05gh
Samba Member
Joined: September 01, 2011
Posts: 178
Location: The Netherlands
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 Posted: Thu May 09, 2024 1:23 pm Post subject: Should hole be plugged between the pushrod tube on cylinder 1 |
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I have een hughe oil leak, last summer we dit a 4000 mile roadtrip and lost about 1,5 gallon oil on the road. Crank and fluwheel seals are oke, saeling oilcooler are oke, new pushrod o-ring, cilinderehead cover gasked are new. Oil pressure switch is new.
There a lot of oil dripping from the deflecter plate/tin. And oil on the cilinder studs.
And on top of the right side of the blok oil.
I'm out of options where to look for to solve this oil leak problem, please help.
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busman78
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Joined: August 17, 2004
Posts: 4655
Location: Oklahoma City, OK
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| Posted: Thu May 09, 2024 3:47 pm Post subject: Re: should that hole be pluged between the pushrodtube on cilinder 1 |
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| Yes, there is a plunger, spring and screw plug. Avoid driving till repaired. |
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KTPhil 
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Joined: April 06, 2006
Posts: 35772
Location: Conejo Valley, CA
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| Posted: Thu May 09, 2024 4:02 pm Post subject: Re: should that hole be pluged between the pushrodtube on cilinder 1 |
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busdaddy
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Joined: February 12, 2004
Posts: 52672
Location: Surrey B.C. Canada, but thinking of Ukraine
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| Posted: Thu May 09, 2024 4:22 pm Post subject: Re: should that hole be pluged between the pushrodtube on cilinder 1 |
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| busman78 wrote: |
| Yes, there is a plunger, spring and screw plug. Avoid driving till repaired. |
Only on early ones, on later models that's a blind casting hole that's not machined. Easy to tell, fire it up for 10-15 seconds, if it pisses the entire sumpfull of oil out it needs a plug.
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timvw7476
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Joined: June 03, 2013
Posts: 2475
Location: seattle
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| Posted: Thu May 09, 2024 4:36 pm Post subject: Re: Should hole be plugged between the pushrod tube on cylinder 1 |
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Never seen one pop out like that. 
Spock Voice: 'Fascinating'. |
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busdaddy
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Location: Surrey B.C. Canada, but thinking of Ukraine
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Wildthings
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Joined: March 13, 2005
Posts: 52239
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| Posted: Thu May 09, 2024 7:17 pm Post subject: Re: Should hole be plugged between the pushrod tube on cylinder 1 |
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If you dumped all your oil, I would be concerned you might have damaged the bearings and/or pistons. All it takes is a second or two of no oil while at highway speeds to do damage.
Having an oil galley plug blow is another side effect of running a overly thick oil. |
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05gh
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Joined: September 01, 2011
Posts: 178
Location: The Netherlands
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| Posted: Fri May 10, 2024 12:30 am Post subject: Re: Should hole be plugged between the pushrod tube on cylinder 1 |
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The block code is GE, there is no oil comming out of the hole between the push rods. I think it is aa blind hole, the feul mointing is also een blindhole. This calllifornia FI engine has standard a electric feulpomp.
I will investigate the oil gally plugs, where do I have the look, is there a diagram?
And how to test? the enigine is out of the car.
(I had the suspection that the cranck seal was blow but ik looks oke no wearing marks.)
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Wildthings
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Joined: March 13, 2005
Posts: 52239
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| Posted: Fri May 10, 2024 5:58 am Post subject: Re: Should hole be plugged between the pushrod tube on cylinder 1 |
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| 05gh wrote: |
The block code is GE, there is no oil comming out of the hole between the push rods. I think it is aa blind hole, the feul mointing is also een blindhole. This calllifornia FI engine has standard a electric feulpomp.
I will investigate the oil gally plugs, where do I have the look, is there a diagram?
And how to test? the enigine is out of the car.
(I had the suspection that the cranck seal was blow but ik looks oke no wearing marks.) |
I think Ratwell.com shows where all the oil galley plugs are, as a guess I think there are nine of them total in three sizes. The ones most apt to blow are the larger ones hidden behind the flywheel, though its worth lightly peening around all of them. There is one below the cylinders that can not be reached with the engine together so ignore that one
This is a plug that blew so it got a heavy peening:
These plugs have never blown so got light peening:
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Vanagonsgoslow
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Joined: April 18, 2019
Posts: 115
Location: E Dorado Hills, CA
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| Posted: Fri May 10, 2024 10:01 am Post subject: Re: Should hole be plugged between the pushrod tube on cylinder 1 |
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| That's the location of the secondary oil pressure relief valve on an early Type 4 engine case. That was deleted by VW on later model Type 4 engines to save a Deutsche Marks in production costs. The engine should not be operated until the oil pressure relief valve piston/plunger, the pressure spring, and the end cap are replaced. |
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05gh
Samba Member
Joined: September 01, 2011
Posts: 178
Location: The Netherlands
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| Posted: Fri May 10, 2024 1:43 pm Post subject: Re: Should hole be plugged between the pushrod tube on cylinder 1 |
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I have checkt the oil gally plug but nothing exeptionals to see. (https://www.thesamba.com/vw/forum/viewtopic.php?t=671543&postorder=desc). But when a flip de engine the right side down (cilinder 1 and 2) nothing happens bu when the left side is down (cilinder 3 and 4) the push rods on the cilinderhead begin to leak oil. I have change the o-rings 1 year ago on both sides. The cilinder head on the left side is a different manufactor AMC. Would that be an explenation?
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Wildthings
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Joined: March 13, 2005
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| Posted: Fri May 10, 2024 4:22 pm Post subject: Re: Should hole be plugged between the pushrod tube on cylinder 1 |
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It's easy to damage the pushrod tube o-rings during installation. Here is a post I started on dealing with pushrod tubes.
https://www.thesamba.com/vw/forum/viewtopic.php?t=420944 |
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05gh
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Joined: September 01, 2011
Posts: 178
Location: The Netherlands
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| Posted: Sat May 11, 2024 3:20 pm Post subject: Re: Should hole be plugged between the pushrod tube on cylinder 1 |
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Thanks for the advice I will check for sharp edge on the entrance to the bore.
It looks that the oil gally plug above the push rod tube on cilinder 4 is sticking out or it just a burr?
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05gh
Samba Member
Joined: September 01, 2011
Posts: 178
Location: The Netherlands
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| Posted: Tue May 14, 2024 2:02 pm Post subject: Re: Should hole be plugged between the pushrod tube on cylinder 1 |
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two years ago I replaced the o rings on the pushrod tubes. Upon closer inspection I discover that the o rings on the head side are flat on the outside. And they broke in two when removed. I don't understand why they wear out so quickly.
What I notice was that the spark plugs are colored white. This could indicate that the feul adjustment is to lean. And due to that the temperature will rise?
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timvw7476
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Joined: June 03, 2013
Posts: 2475
Location: seattle
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| Posted: Tue May 14, 2024 2:33 pm Post subject: Re: Should hole be plugged between the pushrod tube on cylinder 1 |
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usually when buying the O rings for the tubes, get the 'Viton' trade marked ones. They may still split when you pop them out years later anyway....
And check the plug porcelain, the fuel today washes everything very clean thanks to alcohol. But there should be a halo or ring of sorts down the porcelain somewhere. Same for the 'strap' to the center electrode. Color shift.
May need decent light & or magnifying glass to actually see it. Think they even make such a device, it's gotten that bad. |
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