Hi I have a 07 lsj with 117k miles I was at a stop sign when I put it in first and it stalled I tried to start it and it just a made a starter noise, I had a friend push my car with his truck and a tire thinking I could let out the clutch and push start it, it back fired twice, I then towed it home took the valuable cover off thinking the timing chain broke cause the starter was turning everything, all the rockers were broken pins everywhere not one was in tact, the cans looked perfectly fine no scratches or indents, the timing chain was super tight, I ordered new rockers from zzp and I’m going to try to install them without removing the cams and do a compression test. I took off the oil pan and found three pins from the bearings in the rockers, no metal was in the oil but a plastic piece, there were some metal sparkles but I’m going to assume they are from the broken rockers, any one know why all the rockers broke and if it was the back fire what happened in the first place.

Yeah my plan is too put the rockers in and turn the engine by hand to make sure nothing is hitting each other than I’m going to tap the key and if everything looks fine I’m going to do the compression test, I tried to do a compressed compression test but I don’t think my compressed was powerful enough and I’m not sure but air seemed to be coming out of cylinder 1 when I tested it out on 4 and there was no compression so I think I didn’t do soemthing right.

The springs are all up

I tried to do the compression test with the compresser but I’m not sure if the machine was not working or if I really had 0 pressure. When I shot pressure it was leaking from somewhere quite a bit but it felt like it was coming from the spark plug cylinder that I was testing compression on. I was planning on putting each rocker in one by one turning the engine by hand at the point where the cam wasn’t pushing down on the rocker, I was able to fit a rocker that was still somewhat in tact, so once I get the rockers tomarrow I was planning on putting them in turning the engine by hand to make sure it wasn’t off timed and then doing a compression test by key, if it was off timing I might buy a new chain or just sell the car. I’m going to post pictures in a little bit.

Yes that’s the tool I’m using I had the psi to 100 and when I plugged it in I made sure the cylinder was at tbc and leakage didn’t move at all stayed at 100% it felt and sounded like it was leaking from were the spark plug was were I screwed in the leak down test . Also when I tried cylinder 4 I had the spark plug out of 1 and when I held my hand over the spark plug hole the leaking sound went down.