Working on fixing my Saturn Vue. The fixed plastic timing chain guide broke into three pieces allowing timing to slip and pistons to hit valves. Update. Pist…
Working on fixing my Saturn Vue. The fixed plastic timing chain guide broke into three pieces allowing timing to slip and pistons to hit valves. Update. Pist…
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First off the engine didn’t want to turn over all the way. Second after taking off valve cover could see that some of the valves weren’t up all the way and weren’t being held down by the camshaft, meaning gap between camshaft and valve rocker
How were you able to determine the valves were bent? Did you have to do a compression check, or were you able to tell visually they were bent by rotating the engine?
Well I got the Vue running. Ended up swapping in a different engine, also from a 2004. I put new timing chain, guides, hydraulic timing chain tightener before installing replacement engine. Has 50,000 fewer miles too.
I know the early ecotecs suffered from a smaller than needed oiler for the chain that helped burn em up. Thought they made it larger by ’04 though??. Regardless clean the crud outta the oiler before reassembly.
This is a really reliable engine but GM decided to but these cheap plastic parts in the timing Chain and the heat of the engine overtime starts to melt it. That’s the problem. I have a 03 Sunfire with same engine has 79,000 Miles no problem yet but even if the problem has not happen yet I’m going to replace them to new timing Chain. I had my Sunfire seens 2003 and love it.
It happened while starting. Backfired through the intake and blew the filter lid off. But it was enough to bend the valves.
did it shut off while driving?