[T3] No oil pressure

[David Sanderson]

Hi Brian

Great points, thank you. I had considered the deep sump as a problem so I removed it. The pick-up is now stock. I have never had to pack the oil pump with petroleum before starting for the fist time so I did not do that this time. What purpose does that provide? Also, yes I blew air through the lines and was unable to discover a blockage, including removing the oil relief by pass spring and plunger. 

Davge

On May 10, 2013, at 8:48 AM, Brian Fye wrote:

> Okay... I'll learn not to skim next time!  Since the engine is out of the
> car, I would drain the oil out and remove the pump cover.  Try removing the
> the oil pressure bypass plunger/spring and then try blowing air up through
> the plunger bypass hole and see if you get any are movement at the pump.
> you may have a blocked galley, the plunger might be stuck...  Also check to
> make sure your pick up tube is not touching the bottom of the deep sump and
> causing starvation that way.
> 
> Good luck!
> 
> 
> On Fri, May 10, 2013 at 8:43 AM, Brian Fye <bfye at canyonville.net> wrote:
> 
>> did you pack the oil pump gears with petrolium?  also, is there any chance
>> you have the oil pump to oil cooler lines reversed?  i've seen that happen
>> before.
>> 
>> 
>> On Fri, May 10, 2013 at 8:40 AM, David Sanderson <djsanderson at telus.net>wrote:
>> 
>>> Hi Folks
>>> 
>>> I'm seeking some help as I have run out of ideas regarding my newly built
>>> motor -  a motor with no oil pressure. In all the VW engines that I've
>>> built I have never had an issue with oil pressure but I have one now. After
>>> all the careful work assembling the engine I put it in the car and with
>>> some excitement worked on starting it. Well, it started fine but there was
>>> no oil pressure. I turned it off and looked at everything but could not
>>> find anything obviously wrong. I tried a couple more times - it starts and
>>> runs but the oil pressure idiot light won't go out. I know this light and
>>> sensor work because there were in the old engine and worked fine.
>>> 
>>> I am at a loss to figure out the problem. The engine is relatively stock,
>>> a new dual relief case, 1776 with a full-flow system, 26 mm oil pump and a
>>> deep sump. Here's what I have done so far. During the build, I blew air
>>> though all the galleys and lines to make sure everything was clear and
>>> clean and then assembled the engine with much care.
>>> 
>>> Since I had no oil pressure and was not willing to continuing running it,
>>> so I pulled the engine out of the car and set it on a stand where I could
>>> turn it over with a battery and starter and look for problems. I am
>>> assuming that with some cranking there should be enough oil pressure to
>>> turn the light off. Thinking that perhaps I have made a stupid goof and
>>> forgot to put the gears in the oil pump I removed the cover but they were
>>> there and everything seemed fine. Turn the engine over and the pump gears
>>> move. I then went through a number of steps, including removing the deep
>>> oil sump (thinking there was a pickup problem), changed out the Gene Berg
>>> oil pump cover plate and used a Scat version, finally swapping out the 26
>>> mm pump and installing a stock 21 mm pump - none of these had any impact.
>>> There is still no oil pressure. I installed a t-connector on the oil
>>> sending unit situated on top of the oil cooler and installed a mechanical
>>> pressure guage and it confirmed, no oil pres
>>> sure.
>>> 
>>> During this process, I have also separated the oil lines to the full flow
>>> system so that I could see the output of the pump directly, into a
>>> container. These engines should generate considerable oil pressure at start
>>> up and yet I get only a dribble out of the hose.
>>> 
>>> I am at a loss as to what to do. It's like the pump doesn't pump or get
>>> oil and yet I know there is lots of oil in the case. I could begin to
>>> disassemble the engine but I am not sure what I would be looking for. I had
>>> thought with your broader experience at these engines someone might have a
>>> suggestion.
>>> 
>>> Any thoughts, questions or advice would certainly be appreciated.
>>> 
>>> Thanks.
>>> 
>>> Dave
>>> -------------------------------------
>>> 1977 911S
>>> 1965 Sunroof Notch
>>> 1958 Karmann Ghia
>>> http://www.sandersonmotorsports.com
>>> Notch build thread here:
>>> http://www.thesamba.com/vw/forum/viewtopic.php?t=482533&postdays=0&postorder=asc&start=0&sid=fa176f0eb3dd02b8f3152e46fa22221b
>>> 
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>> 
>> 
>> 
>> --
>> Brian Fye
>> Canyonville Christian Academy
>> 541 839 4401 ext. 110
>> 
> 
> 
> 
> -- 
> Brian Fye
> Canyonville Christian Academy
> 541 839 4401 ext. 110
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