Post by: Nosebolt on April 02, 2009, 09:02:19 PM
Before the strip down I tried fitting a new PCV, it helped a lot, leak down to a dribble and pressure is up to 20lbs at revs, but very low at idle.
Not quite as the book said, didn’t need to take exhaust off, but did need to remove off side engine mount, rest as book, starter motor and cross brace had to come out too.
After removing the oil pump the pick up fell off, every thing I have read so far says if the pick up tube is removed you need a new pump unit. I have tried expanding the tube to create a tight fit but it looks like the hole it sits in is tapered, run out of light for tonight but will try to seal with O ring tomorrow or does anyone have another solution.
I would think that if the pick up isn’t air tight that would cause low oil pressure. Does that sound right?
Tomorrow new rear main seals and reassembly
Post by: Nosebolt on April 03, 2009, 08:41:55 AM
seems to create a seal, will know when fitted
Post by: Bubba on April 03, 2009, 09:42:30 AM
Post by: Nosebolt on April 03, 2009, 09:50:03 AM
Post by: Bubba on April 03, 2009, 10:01:56 AM
just think yorkshire fisherman
checking with a capillary gage is the only true way to establish whats going on but 258s dont make big nos
Post by: Nosebolt on April 03, 2009, 10:07:32 AM
maybe 40 at start up when cold, 10 at idle and 25 with revs when warm
getting 10/25 cold and 0/10 warm at the moment, did gain a little with the PCV but not a lot.
Post by: Mike Pavelin on April 03, 2009, 12:06:37 PM
Post by: Nosebolt on April 03, 2009, 12:19:22 PM
Quote from: "Mike Pavelin"
I'd mic up the crank and check the shells while you're in there.
thats too scary, I know your right but cant afford to open that can of worms just yet, no knocks so might leave well alone.
when the Isuzu is back on the road I will be doing something with the Jeep engine, either rebuild or replace, ideally prep new engine before removing old, but thats a while yet.
Post by: Bubba on April 03, 2009, 04:06:10 PM
1 v8 several optoins
2 4.0
Post by: Nosebolt on April 03, 2009, 05:53:39 PM
anyway job done, now getting 20 at idle and just over 40 at revs cold with 18/30 hot and so far no leaks visible =D>
Post by: Mick O on April 03, 2009, 07:24:33 PM
And mine got a leak on the rear seal, it don't loose a lot, but it gets everywhere.
Still, keeps the underside well lubed :brows:
Post by: Bubba on April 03, 2009, 10:09:26 PM
Post by: Mick O on April 04, 2009, 02:03:46 PM
Post by: Nosebolt on April 04, 2009, 05:41:49 PM
All was leak free till I took it on a faster run around the by-pass pressure held up OK, down to about 15 after 20 mins or so, and when I got home found a few drops of oil on the floor. Think it’s as good as its going to get without a full rebuild so will live with it.