Oil leak near Fuel Injector

[scovor]

I posted this question earlier in 'Re: injector pump check valve removal tool' but buried there, it did not get the response I'd hoped for.
Basically, in the photo here, the large circle denotes a cap-like feature that was spewing oil on a short drive.  Does anyone know what this is, and is it a problem anyone has also encountered.  Also, there is a stray wire lurking near the two side mounted horizontal pumps shown.  The top one has a wire connected near the red dot, but the bottom just has two unused terminals.  Logic would say to me that the wire belongs on the bottom one, but I thought it better to ask those practiced in the Pagoda arts.  Would welcome any advice. Thanks.

[ja17]

The oil level in your injection pump is way too high, which is causing your leakage. The cap is normally where you would add oil for the injection pump.  You need to suck all the oil out of the pump, and add fresh oil up to the correct level on the injection pump dip stick. . Monitor the level of the oil in the injection pump afterward. It should remain constant. If it continues to rise, your injection pump may need work.

You have two electrical solenoids on the injection pump. The top one is an engine starting aid, both wires should be attached to it if they both emerge from the same wiring sheath. The brown one is ground (earth). The solenoid will usually work without the brown wire attached anyway, since the solenoid is grounded from the engine. You should find a second connection terminal on the top solenoid for the brown wire. The lower solenoid is a fuel cut off device, which cuts the fuel supply during de-acceleration. This solenoid can be left disconnected for now.

Keep us up to date and ask questions. Read up on the injection pump information on this site.

[scovor]

Many thanks for the excellent advice.  I'll keep you posted. -Scott

[Paul & Dolly]

Scovor

You do not say in your tag line, what car you have.

Whilst the injector pumps are all basically the same, there were some important differences between the earlier and later cars, especially regarding the oil systems, and starting aids

Spend some time reading up the techanical manual here on the site wrt Fuel Injection System.

Good luck

Paul

[jameshoward]

The injector pumps depending on model are significantly different. Earlier ones have a self-contained oil supply. Later ones have a an oil feed via an oil line. If you're is an earlier pump and you're experiencing a rising oil level within the self-contained supply it could be that fuel is getting into the oil, hence the rise in oil level. This in turn would reduce the lubricating properties of the oil, which would be a bad thing.

The injector pump will have a designation plate on it. Paste the number here to help folks determine what pump you have, and therefore how it's lubricated.

Here's the wiki entry, which has a lot of good info: https://www.sl113.org/wiki/Fuel/Injection

[scovor]

Many thanks to James and Paul for the excellent advice.   Sorry to post this reply so so late, but for the record, here is what seems to have worked so far. I did not do the work myself, instead using the excellent mechanic who does our Audi work as well as other side work on English classics.  Having also read the forum here, and cleaned out years of gunk, he couldn't see why there were two breather caps closely adjacent on the injector pump.  When the smaller of the two caps was unavailable for replacement, he suggested and I agreed that we just cap it off with a bolt.  See photos of the two different sized breather caps and the bolt now taking the place of one of them.  The car is a 1964 RHD but the engine is 1968, and the pump is PES6K1 70B120 R20Y, it also has the numbers 0408 026 017 on the bottom as well as 80420924 on the top of the label.   In any case, the car has been faultless all summer, though has only about 50 miles on it since this repair.   So far, so good.