replacing oil pump on '86 chevy blazer


Old 04-13-02, 08:02 PM
Tim Strickland
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replacing oil pump on '86 chevy blazer

I have a '86 full-size chevy blazer with a 305 in it. It needs a new oil pump. I've already bought the parts and want to do the work myself, but I have never attempted a repair this extensive. Any tips or advice?
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Old 04-13-02, 08:38 PM
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Check the links in my signature file for some ideas.

Make sure to thoroughly clean out the pan and make sure the pickup screen doesn't get clogged (the cause of most oil pump failures due to lack of maintenance).
Old 04-14-02, 08:08 PM
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The only useful tip I can give is : make sure you take the distributor cap off before you raise the engine or it stands a good chance of cracking against the firewall. Other than that, take the motor mounts loose, jack the engine up a bit, remove oil pan, replace pump, clean pickup tube, and maybe replace bearings while you're in there...just a few bucks more. Be sure to clean the front and rear pan seal mating surfaces well, and use RTV in the corners of them.

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