 Compression on un-broken-in engine |
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| billstern |
 Apr 23 2018, 07:32 AM
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Newbie  Group: Members Posts: 2 Joined: 23-April 18 From: Texas Member No.: 22,065 Region Association: Southwest Region  |
Greetings,
I have been working on a rebuild for my 2.0 engine with stock fuel injection. Installed the engine using some "they've been redone" heads. Bad idea. Almost immediately, on startup, after running several minutes, I had sounds like someone banging on a garbage can. Traced it down to a single cylinder, with zero compression due to a valve sticking problem. I have yet to pull the head, but one spring is depressed without the rocker assembly attached. Lesson learned by not trusting and verifying. But to the point of my post: In the process of tracing down the issue, I ran a compression test. I was surprised to find, except for the cylinder with 0 compression, the compression on the other cylinders was 145, 120, 120. The engine was warm. The heads, with valves closed did seam to seal, as I tested them with lighter fluid. So, my question is, what should be expected on reused pistons with new cylinders and new rings that are not yet seated? In other words, does one not get to the 150 psi mark until rings have fully seated. Any advice would be much appreciated. |
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Posts in this topic
billstern Compression on un-broken-in engine Apr 23 2018, 07:32 AM
Mark Henry How long on the engine?
Some rings like Deves sea... Apr 23 2018, 08:08 AM
billstern Not long on the engine. Goetze is the brand. Apr 23 2018, 09:12 AM  |
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