Hi guys,
Before I get flamed for not searching before I post I have a reason. This is my daily drive and I need fast answers. I dont have time to look all day for my specific problem to be found.
Here is the problem. Newly rebuilt longblock b18b. Compression is 9.1. Just got it back from the machine shop not to long ago. We finally got it in and did a compression test right away just to see if everything was working well. On the first three cylinders compression was right at like 75 +-. The 4th was zero.... And there is oil in the spark plug. From what searching I have been able to do I see that it could be valves either bent or broken or the piston rings are off...

Any thoughts? Anything would be appreciated.

Thanks

 

Did you assemble the motor. What all was replaced? Were the rings gapped correctly?

 

A leakdown test will tell you if it is valves or rings. 94

 

I did not assemble the engine myself. Machinist that did the work assembled it. He is well known for being good around here.

 

did the machine shop put the head on or did you stall it?

 

As fcm said do a leak down. Have you took it back to the machinist?

What all was replaced?

 

goodness HUGE weight off my shoulders!! the valves were just a little to tight so they were not closing all the way. Adjusted the valve lash and its running now! Thanks guys