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tsimek2 Samba Member
Joined: September 07, 2017 Posts: 27 Location: High Point, NC
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Posted: Mon Jan 14, 2019 4:33 am Post subject: Stuck Plunger for Engine Control Valve |
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I have a 1965 VW Type 1.
I have a stuck Engine Control Valve Plunger.
I am not sure how I can get it out. All the things I did ended up scoring the tunnel.
Any Ideas would be appreciated.
Thank you,
Tom |
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FreeBug Samba Member
Joined: March 12, 2012 Posts: 4278 Location: deepest, darkest Switzerland
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Posted: Mon Jan 14, 2019 10:27 am Post subject: Re: Stuck Plunger for Engine Control Valve |
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I assume you're talking about the oil pressure/cooler control valve?
Well, There is a special tool sold in VW places, or some do it successfully with a wooden dowel, or you can tap and thread the bottom. Why is the oil channel getting damaged?
It's entirely possible that I've completely misunderstood your question, though. |
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jason Samba Member
Joined: August 07, 2002 Posts: 3443 Location: Garage
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Posted: Mon Jan 14, 2019 10:39 am Post subject: Re: Stuck Plunger for Engine Control Valve |
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Leave the spring out and start it for a second. It may dislodge itself. Only for a quick amount of time. If it dislodges you wont have oil pressure. |
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tsimek2 Samba Member
Joined: September 07, 2017 Posts: 27 Location: High Point, NC
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Posted: Mon Jan 14, 2019 10:44 am Post subject: Re: Stuck Plunger for Engine Control Valve |
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FreeBug wrote: |
I assume you're talking about the oil pressure/cooler control valve?
Well, There is a special tool sold in VW places, or some do it successfully with a wooden dowel, or you can tap and thread the bottom. Why is the oil channel getting damaged?
It's entirely possible that I've completely misunderstood your question, though. |
You are correct. It's the oil cooler control valve.
It's getting damaged, because I have been using a flat head to take it out and it slips down the channel scoring it.
How would you do it with a wooden dowel?
Thank you,
Tom |
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tsimek2 Samba Member
Joined: September 07, 2017 Posts: 27 Location: High Point, NC
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Posted: Mon Jan 14, 2019 10:45 am Post subject: Re: Stuck Plunger for Engine Control Valve |
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jason wrote: |
Leave the spring out and start it for a second. It may dislodge itself. Only for a quick amount of time. If it dislodges you wont have oil pressure. |
I'm rebuilding this engine. It's nowhere near being able to start. I'm essentially putting all new components to a shell.
Thank you,
Tom |
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FreeBug Samba Member
Joined: March 12, 2012 Posts: 4278 Location: deepest, darkest Switzerland
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Posted: Mon Jan 14, 2019 11:03 am Post subject: Re: Stuck Plunger for Engine Control Valve |
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I guess the idea with the wooden dowel (I've never done it myself) is to whittle down the diameter so it's a very tight fit, maybe a chamfer to help it in. Then wedge it into the plunger, the wedge needs to be stronger than the plunger's resistance.
Maybe substitute the oil pressure with compressed air? Not sure how assembled/disassembled this engine is. |
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evolks13 Samba Member
Joined: January 24, 2004 Posts: 33 Location: CA
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Posted: Mon Jan 14, 2019 11:14 am Post subject: Re: Stuck Plunger for Engine Control Valve |
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Try a drill bit or tap that’s close to the same size and see if you can get it to bite. |
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jason Samba Member
Joined: August 07, 2002 Posts: 3443 Location: Garage
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Posted: Mon Jan 14, 2019 3:28 pm Post subject: Re: Stuck Plunger for Engine Control Valve |
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If apart use compressed air |
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Dangermouse Samba Member
Joined: November 23, 2005 Posts: 1266 Location: Beautiful New Zealand
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Posted: Mon Jan 14, 2019 3:31 pm Post subject: Re: Stuck Plunger for Engine Control Valve |
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_________________ Do not follow me, for I may not lead. Do not lead me, for I may not follow. Do not walk beside me either; actually just bugger off and stand over there will you. |
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tsimek2 Samba Member
Joined: September 07, 2017 Posts: 27 Location: High Point, NC
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Posted: Wed Jan 16, 2019 4:59 am Post subject: Re: Stuck Plunger for Engine Control Valve |
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The plunger is 4-5 inches into the channel. My taps aren't that long.
This is great to know though.
Thank you. |
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tsimek2 Samba Member
Joined: September 07, 2017 Posts: 27 Location: High Point, NC
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Posted: Wed Jan 16, 2019 5:00 am Post subject: Re: Stuck Plunger for Engine Control Valve |
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evolks13 wrote: |
Try a drill bit or tap that’s close to the same size and see if you can get it to bite. |
Thank you. |
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Cusser Samba Member
Joined: October 02, 2006 Posts: 31271 Location: Hot Arizona
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Posted: Wed Jan 16, 2019 7:29 am Post subject: Re: Stuck Plunger for Engine Control Valve |
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FreeBug wrote: |
I assume you're talking about the oil pressure/cooler control valve? |
I suspected that too when I first read this, but I typically do not respond when I cannot understand the post. I had never heard the term "Engine Control Valve" in 45 years with these VWs. _________________ 1970 VW (owned since 1972) and 1971 VW Convertible (owned since 1976), second owner of each. The '71 now has the 1835 engine, swapped from the '70. Second owner of each. 1988 Mazda B2200 truck, 1998 Frontier, 2014 Yukon, 2004 Frontier King Cab. All manual transmission except for the Yukon. http://www.thesamba.com/vw/forum/album_page.php?pic_id=335294 http://www.thesamba.com/vw/forum/album_page.php?pic_id=335297 |
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UK Luke 72 Samba Member
Joined: September 07, 2011 Posts: 2867 Location: Little Britain
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esde Samba Member
Joined: October 20, 2007 Posts: 5927 Location: central rust belt
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Posted: Wed Jan 16, 2019 8:13 am Post subject: Re: Stuck Plunger for Engine Control Valve |
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I've always thought that the bottom should be tapped for a bolt from the factory. This way, there would be no mysterys, or special tool needed to get it out. _________________ modok wrote:
Bent cranks are silent but gather no moss. I mean, ah, something like that. |
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KTPhil Samba Member
Joined: April 06, 2006 Posts: 33883 Location: Conejo Valley, CA
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Posted: Wed Jan 16, 2019 9:43 am Post subject: Re: Stuck Plunger for Engine Control Valve |
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esde wrote: |
I've always thought that the bottom should be tapped for a bolt from the factory. This way, there would be no mysterys, or special tool needed to get it out. |
Yes, and a great idea to tap it before installing it in our engines! |
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Type 5 Joe Banned
Joined: January 18, 2003 Posts: 1795 Location: Oregon
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Posted: Wed Jan 16, 2019 9:50 am Post subject: Re: Stuck Plunger for Engine Control Valve |
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What I have done for almost 40 years with these...
I have a few large good quality screwdrivers that are used for the tin screws... These are larger than most you'll see or buy in a set.
I custom ground 1 on the sides so it can be driven into the bottom of the plunger and grabs it firmly with a good interference fit.
I have always been able to retrieve any plunger out of a case... The stuck ones usually have some corrosion built up around them. A little W-D40 and some patience + a back-and-forth twisting action will free them.
-And no, this has never damaged or deformed any of the plungers or damage the plunger bore in any way. _________________ If you would like to contact me, just email through one of my ads on here...
I don't use the P.M. service on here. |
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jeffrey8164 Samba Member
Joined: January 06, 2018 Posts: 3804 Location: Georgia
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Posted: Wed Jan 16, 2019 10:10 am Post subject: Re: Stuck Plunger for Engine Control Valve |
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^^^^^^^
When I worked in a VW shop a big screwdriver was the only thing we used.
They pop right out. _________________ Volkswagen!
Turning owners into mechanics since 1938.
“Let he that is without oil throw the first rod”
(Compression 8.7:1) |
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[email protected] Samba Member
Joined: August 15, 2002 Posts: 4394 Location: Brew City
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glutamodo The Android
Joined: July 13, 2004 Posts: 26300 Location: Douglas, WY
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Posted: Wed Jan 16, 2019 1:33 pm Post subject: Re: Stuck Plunger for Engine Control Valve |
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FWIW - here's a photo of one instance where I put a M12 tap into a stuck plunger, prior to grabbing onto it with a vice grip and yanking it out:
M12x1.75 tap:
_________________ Andy T.
IMAGE NOTE: It has been noted that Chrome based browsers may have issues in displaying my vast image library, which use non-secure links and are on an FTP server. Images should still be viewable if the link is clicked though.
I do not know how to fix this. All I can say is it all works fine for me with what I use, Firefox. |
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FreeBug Samba Member
Joined: March 12, 2012 Posts: 4278 Location: deepest, darkest Switzerland
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Posted: Wed Jan 16, 2019 4:01 pm Post subject: Re: Stuck Plunger for Engine Control Valve |
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Cusser wrote: |
FreeBug wrote: |
I assume you're talking about the oil pressure/cooler control valve? |
I suspected that too when I first read this, but I typically do not respond when I cannot understand the post. I had never heard the term "Engine Control Valve" in 45 years with these VWs. |
I think "engine control valve" is the exhaust valve. If it drops, it takes control of your engine. |
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