Looking for a 2.9L Mechanic in Atlanta Area

[Rick W]

of course.....in the case of the cologne design....there are challenges.

one being the flanged exhaust ports cooking the pan rails and promoting sludge/creosote type build up promoting valve cover leaks and restricted oil returns.

Same question, did the drain holes through the block go in a straight line down to the oil pan?

Hobby is there any way to clean them without pulling the heads off and without damaging the engine? I’m assuming it’s burnt oil and varnish, there’s nothing in there that wouldn’t catch in the oil filter or would damage anything even if it’s circulated back up through the engine, it would just get chewed up. Yes/no?

 

[bobbywalter]

there are a host of openings in the valley

 

[Rick W]

Anything more specific from anybody? I suspected it might be burnt up crud near the exhaust manifold. Can I just run a brass wire brush down through there and then drain the oil?

 

[Curious Hound]

I doubt that there is a " straight pathway" to drain. Find the drain holes in the heads. You can run a soft (brass) wire brush down through them. But if you hit something hard, don't force it. They drain into the valley area or other cast passages in tje block. If you take the valve covers off immediately afyer running the engune and you don't have a lot of oil pooled up that runs out, then they are probably clear. My valvetrain areas, when I got the truck were really sludged up with junk. I could lift globs of crap out with my fingers. It was very obvious.