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Hi guys! It has been a long time since I last posted, but in with some news. Already rebuilt almost the entire engine, checked valve heights, new piston rings, gaskets, etc. I thought it would be ok to share some photos. Did a cleanup on the engine internals and finally was able to restore...

Thanks joegr! I'll post some pics un a bit

Yes, there is a test with the oem diagnostic unit called relative compression, that is how we knew there was a problem with those cylinders. Apparently the exhaust valves are the problem here, bit I am changing piston rings as well and lapping all the valves. The assembly process has been good...

What pics do you want? I won't give up, I already have the engine in pieces. Thinking on buying piston rings for that two cylinders and lapping the valves/check seats.

Has been a while since I posted. The owner bought a used engine so we installed it as it was "in good working condition" when he got it. Long story short, the engine fired up and now there is no compression on cylinders 4 and 8. Already checked it with the dealer scanner and those cylinders are...

Yep, I was also surprised on what I saw on that shop, same oil viscosity for all the engines they receive :( Actually there is a Lincoln dealer and I am friend of one of the service techs. He was going to loan me the tools to get the timing right and to get the necessary parts, but I guess I...

First of all, thank you guys for taking the time to respond to the thread. The compression gauge is working as it should, since I tested it on another car. I already took the timing chains cover to inspect things up and hooked up the starter to the engine to turn it over. The owner told me he...

So I continued to diagnose the engine and had to remove it from the car. I did it from the top despite what the manual said. The dowel pins to center the engine with the transmission had rust on them so it was a bit difficult to separate the engine. I have a few doubts about the timing. Some...

Hi guys, it's been a while since I posted a while ago about COP's going bad on my LS. Since then the car ran fine (changed the COP's at about 27,000km and now the odometer reads close to 55,000km). The problem is the engine lost compression all of a sudden. The car was running fine as always...

So I pulled again the valve cover and inspected everything...the gasket and o-rings seemed to be ok and I installed everything with patience, torqued everything to specs and cranked over the engine. Smoke still coming from the exhaust :mad: ...I checked again with my fingers and a mirror for...

Thanks for the input guys, I'll check tomorrow for the leaky valve cover gasket. I cleaned all the surfaces throughly but I did struggled to get the valve cover in position. The torque is 89 in-lbs right?

Hi guys, I've been having a problem with my '03 LS V8 with 27k miles. After a lot of reading through the forums I solved the classic misfire of COP by replacing all of them. Also changed the valve cover gaskets due to a small leak to the spark plug wells. I started the engine and everything...

Hi fellas, I'm new to this forum and currently own an '03 Lincoln LS 3.9 V8 with 27k miles. It's been a great car and hope to learn more about it. I live in Saltillo, Coahuila, Mexico. :D