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Long story - don't know how to keep it short.
This is the second time it's happened to me. The engine has just been rebuilt. I haven't driven the car on the road yet. Less than 5 minutes on engine. The head was put back together by the engine shop. I just adjusted the valves
Here's the story,
One Month ago: I adjusted the valves cold to spec and then she ran beautifully for several minutes. Shut down, came back next day and started again for a few minutes, ran rough. shut down, came back next day started, ran rough I took up to 3,000 rpm and Clangk, clunk, pop, tack, tack... shut down immediately (talk about a sinking feeling). Turns out 3 of the shims had popped out of their sockets on top of the valve stems. I put them back in (nothing looked damaged) and had a mechanic friend adjust them for me. He is the Z king and said nothing was damaged. The car ran beautifully for several minutes. I shut her down but didn't adjust the valves warm.
I didn't start the car for the entire month because of leaking injectors.
Two days ago:
I finally replaced the 3 leaking injectors and started the car up again. Ran rough but I thought it was the injectors. I shut her down. 2 hours later I came back out and cranked the engine. Right when she started I got that same Clack, tack, tack and I shut down immediately. I pulled the valve cover and one of the shims was half out of it's socket again! @#%^&*^%*(&**&^@#
I think that the problem is that I haven't ever adjusted the valves hot. I kept starting and stopping the engine for real short periods of time. and didn't give the shims time to seat properly. The cam, rockers and shims are from this engine but there is very little prior wear on them. All rockers were matched to the proper cam lobes when I put it back together.
Does anyone have prior experience with this problem? What did I do wrong?
This is the second time it's happened to me. The engine has just been rebuilt. I haven't driven the car on the road yet. Less than 5 minutes on engine. The head was put back together by the engine shop. I just adjusted the valves
Here's the story,
One Month ago: I adjusted the valves cold to spec and then she ran beautifully for several minutes. Shut down, came back next day and started again for a few minutes, ran rough. shut down, came back next day started, ran rough I took up to 3,000 rpm and Clangk, clunk, pop, tack, tack... shut down immediately (talk about a sinking feeling). Turns out 3 of the shims had popped out of their sockets on top of the valve stems. I put them back in (nothing looked damaged) and had a mechanic friend adjust them for me. He is the Z king and said nothing was damaged. The car ran beautifully for several minutes. I shut her down but didn't adjust the valves warm.
I didn't start the car for the entire month because of leaking injectors.
Two days ago:
I finally replaced the 3 leaking injectors and started the car up again. Ran rough but I thought it was the injectors. I shut her down. 2 hours later I came back out and cranked the engine. Right when she started I got that same Clack, tack, tack and I shut down immediately. I pulled the valve cover and one of the shims was half out of it's socket again! @#%^&*^%*(&**&^@#
I think that the problem is that I haven't ever adjusted the valves hot. I kept starting and stopping the engine for real short periods of time. and didn't give the shims time to seat properly. The cam, rockers and shims are from this engine but there is very little prior wear on them. All rockers were matched to the proper cam lobes when I put it back together.
Does anyone have prior experience with this problem? What did I do wrong?