hey guys got a question, my buddy has a 2000 si. we just put in new valve seals and everything went to start it started right up but was missing in cylinder#3. Getting spark, getting fuel. tested compression way low it was from 35 to 50 i now what possible things it could be but something i never really messed with can valve guides make the compression be that low or is it something bigger? going to do a leakdown test tomorrow to make sure where it is coming from but just wanted to get some input. thank you

 

yes if installed incorrectly and its not seated or sealing correctly u could loose compression