sailor77

What causes this (91 accord F22a)? How can I fix it?

BLKFLSH

I suppose it could be the oring. #11 in this picture. You would have to pull the dizzy out to check it. Click on the link below.

http://www.hondaautomotivepart...EC%29

JimBlake

That O-ring would leak outside the distributor. The oil would seep out & run down the side of the head.

Oil leaking INSIDE the distributor cap would come from a seal on the distributor shaft. You can't really get at that seal & replace it. Unfortunately, that means it's time for a new distributor.

tiredofworkinonit

No way around it, replace the distributer.

BLKFLSH

Thanks Jim, too bad it's not that easy.

Granite CB7

Agreed, but instead of buying a whole new dizzy, you can buy just the housing for about 150ish, and swap over all your old parts. That's what I did, the housing is very cheap compared to a whole new dizzy.

inacp

you should just get a new distributor