Hi - newcomer here - I have a recently-purchased 1995 Saab 900 2.3 non-turbo with 125k miles. The timing chain was making noise so I opened the valve cover to take a look and found a heavy coating of black gunk that was up to 3/4" or more thick in some areas. I removed the caked on stuff by chipping away at it and vacuuming the bits up, then used a toothbrush with mineral spirits, rags, and compressed air to clean much of the rest. While I was as careful as I could be, I'm sure that some stuff fell into the engine, and I've certainly loosened up a lot of stuff that will circulate around. What's the best way to clean this out so I don't get any clogged passages?
I've drained the oil pan and am going to drop it out to clean the gunk that's certainly to be in it. My plan is to turn the engine a few times by hand to get any last bits out, dump some more mineral spirits thru to rinse, then button it up and refill with cheap oil. Run for a few minutes, then drain and change oil and filter. Then what?? Should I run any additives (Seafoam?). What sort of oil should I use after?
For a video see http://www.youtube.com/watch?v=s4lpGelO7...mp;feature=plcp
Thanks!
I've drained the oil pan and am going to drop it out to clean the gunk that's certainly to be in it. My plan is to turn the engine a few times by hand to get any last bits out, dump some more mineral spirits thru to rinse, then button it up and refill with cheap oil. Run for a few minutes, then drain and change oil and filter. Then what?? Should I run any additives (Seafoam?). What sort of oil should I use after?
For a video see http://www.youtube.com/watch?v=s4lpGelO7...mp;feature=plcp
Thanks!
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