What if there is no spark plug holes?

 

If it's a gasoline engine, there are spark plug holes.

 

He has a Cummins.

 

this is correct. This is why I am at a loss.

 

In that case, there are adapters you need, and I *think* the compression tester goes in in place of the injectors? Not really sure on that, I don't generally do diesels.

 

You need this. https://www.tooldiscounter.com/produ...RoCGUEQAvD_BwE

 

thanks. I have just passed by the compression test and I will just do a leak down test when I get the block on the stand. But I assume I have to plus the hole that the fuel rail screws into? Unless this part does not allow the air to escape around it. If so I will do the compression test prior to removing anything further. So far I have the whole front clip removed. All the rads minus the ac rad(have to get system evacuated)

 

You don't have to plug the fuel feed tube holes, the tool seals at the bottom and air can only go out the top hole.

 

What is this? Is it worth replacing and reinstalling it? It was like this.