Re: Low compression

Posted by Rusty O\'Toole On 2014/5/2 19:16:36

It may be too late but.. you can remove carbon from the head with a steel scraper but for the pistons use a BRASS scraper, they are aluminum and a steel scraper can scratch or gouge them.

A wire brush in a drill will polish away the last of the carbon. Just go easy on the pistons.

If you install new rings you should scrape the carbon out of the bottom of the ring groove. Take a piece of an old ring, grind to a point, stick it in a file handle and you have a ring scraper. Or, you can buy a special tool.