Valve leaking issue ka24de

[jcarney1987]

I'm working on rebuild a ka24de and I now had an issue with the timing chain not being marked correct. When I first installed the change and installed the upper chain and turned the engine by hand, it stopped and I could feel it hitting the valves.

Later on after further inspection I noticed the chain was not marked correct and I then counted the links and made my own marks.

Now I turned the motor by hand and I can feel compression build up, but then I can feel/hear it coming through the valves. I have my compression tester in the spark plug hole to keep air from escaping and when I hit the air release on it, you can hear that it holds a little bit of air.

So what do you think? Do you think the piston may have damaged the valves? I have a new head gasket already installed so I'm not sure if I should pull it apart and check the valves or not. Perhaps I should lap them? When the head came back from the machine shop, he said it was fine and held pressure. I did pull the valves out to put in new seals, but I put the valves back in the original locations.

So what is your suggestions?


Also, I noticed the FSM says to Torque the head bolts and then loosen all the way and retorque them. Does anybody know why we do that? Does this mean I could actually use the same head gasket if I pull the head back off?

Thanks for the help.

[PapaSmurf2k3]

I've always heard a hissing when turning by hand too. I wouldn't worry about it. You sound like you're close enough to putting everything back together to where you can check compression again turning it over with the starter.

I've always gone back in with head studs instead of factory bolts, but I've never re-used a head-gasket. Nor have I loosened everything after torquing.

[jcarney1987]

Thanks for the reply,

I think thursday I'll presure up the cylinders and see if any air comes out. I guess it would be a better method.