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HELP! NO COMPRESSION

2K views 5 replies 2 participants last post by  1Dieselman 
#1 ·
Hello, so i went and bought a snap on compression tester with the adapter to fit my 97 with the 7.3l engine. I was testing the first cylinder and i think my rocker arm hit the tester and bent the tester a bit. This made the tester hard to get off so i removed that arm and the push rod to get plyers around the tester. I got it out and then put it back together. I went to test it again and i am getting 0 compression out of that cylinder. The other cylinders on that side still read 340psi so i know its not the gauge. I wonder if maybe the tester pushed the injector and loosened that up?

Any help would be appreciated! Thanks
 
#2 ·
Are you sure that the push rod is seated in the lifter correctly? Sounds like you have a valve that is not closing.
 
#4 ·
Sounds good. So what made you do a compression test.
 
#6 ·
Looks like your good to go. I bought my truck with 250k on it bone stock and started modding it at 266k miles.
 
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