Reapertura

My tappet cover has been leaking like a sieve for a few weeks. Its very noticable and for the first week the dipstick would of course read low. but for the last few weeks its read above or at normal. A friend tested the oil and there was a very very small amount of diesel in it. This is a93 with almost 400k. I have the new seal but am intiminated about installing it. What will i need tool wise to remove the ve to get to it, im at school and have very limited tools. Thanks fr any help, and please excuse anyh bad gramme3r as i have drank a uber monster and it has me tweaking haha

Onemoparnut

I have never replaced the tappet cover seal but I don't believe you need to remove the ve to get to it. You might have to work around it some because a part of the cover is behind the ve but you should be able to get it.

Jklawinsky

Taking the VE off to replace the front seal ?

Reapertura

not the front seal the seal on the side of the block

j_martin

Well, the dipstick isn't lying to you. The seal that's doing more than making a mess is probably the front shaft seal on the VE pump, letting fuel get into the timing cover and thus into the oil pan. Replacing it involves removing and reinstalling the VE pump. If you don't stop the fuel leak, you'll trash the engine.

If the slip on valve cover gasket has you skeered, the pump is way out of your league, especially if yer 3 sheets to the wind. Probably worth paying someone to throw a seal kit into the VE pump. Might as well have them adjust the valves and install fresh rocker cover gaskets while they're at it. They're silly-cone and should last 100K or so. (a bunch of valve adjustments)

Jklawinsky

That's where I was getting at. Fixing the oil leak won't fix the diesel in oil.

jimbo486

I'm willing to bet you have a factory diaphragm lift pump. The diaphragms are known to tear and allow fuel to enter the crankcase. Since those are easy to replace, start by checking yours first before you go removing the injection pump to find out that seal is fine.

Knock on wood but, my '90 has 400K+ miles on the clock with the original injection pump and I haven't had a front seal leak from it. Not all pumps have equal lifespans though but just trying to give you some hope.

Jklawinsky

The lift pump totally slipped my mind. I always assume front deal since I have an airdog and am paranoid about mine blowing out.

johnh

"A friend tested the oil and there was a very very small amount of diesel in it. This is a93 with almost 400k."

jimbo486

And the purpose for this post is....?

Jklawinsky

I would think more than a tiny bit of diesel is in the oil if he has a "massive" leak and the dipstick is normal or above normal.

ofcmarc

The VE has to come off to replace the tappet cover gasket. Might as well replace the front seal on the VE while it's off and take a look at the LP as well. I know that a piston LP has to come off to remove the tappet cover but a stock diaphragm might not have to. I'd pull it anyway and check it out.

Reapertura

thank u marc