dixiebandit69
Junior Member
Facts: 2013 5.7L Hemi, with MDS and VVT.
Bad lifters killed some cam lobes, so I replaced cam and lifters with factory replacements. No fun cam upgrades.
All timing marks were verified, actually pretty simple.
I got it started Monday afternoon. Sounded good. I let it warm up completely, and shut it off.
First thing this morning, I retightened the exhaust manifold bolts, started it up, and test drove it for about ten miles.
Everything was good.
Then a few blocks from the shop, I was pulling away from a stop sign, and the engine died.
No noise, no fireworks, just dead.
Towed it back to the shop, and I've got a "cam/ crank correlation error" code.
(Side note: The starter chose this exact moment to crap-out. 180K mile original.)
When I got a new starter on it, the engine was spinning really fast and would not start.
I pulled a spark plug, put a compression gauge on it, and no compression.
Pissed and confused, I took off the timing cover (in record time, too) and rechecked the timing marks: they were dead-nuts accurate.
So I pulled a valve cover, and immediately saw that all of the intake pushrods were bent into boomerangs.
I've got the driver side head off, and Number 1 cylinder is at TDC, and the cam timing marks are dead on, so there is no chance that the timing chain was installed incorrectly.
This engine has MDS (Multiple Displacement System), and YES, all of the new lifters are installed in the correct locations.
I reused the original timing chain tensioner, as it was still in good condition, and there is no damage to it.
If the cam was so far out of time that it would bend the valves, it would never have started in the first place.
The only thing I can think of is that the Variable Valve Timing phaser (camshaft sprocket) has some sort of problem, but it doesn't make any sense: if that phaser fails, it defaults to the fully advanced position, WHICH IS THE POSITION IT IS IN WHEN SETTING THE CAM TIMING.
I really don't know what to think.
Any help is appreciated.
Bad lifters killed some cam lobes, so I replaced cam and lifters with factory replacements. No fun cam upgrades.
All timing marks were verified, actually pretty simple.
I got it started Monday afternoon. Sounded good. I let it warm up completely, and shut it off.
First thing this morning, I retightened the exhaust manifold bolts, started it up, and test drove it for about ten miles.
Everything was good.
Then a few blocks from the shop, I was pulling away from a stop sign, and the engine died.
No noise, no fireworks, just dead.
Towed it back to the shop, and I've got a "cam/ crank correlation error" code.
(Side note: The starter chose this exact moment to crap-out. 180K mile original.)
When I got a new starter on it, the engine was spinning really fast and would not start.
I pulled a spark plug, put a compression gauge on it, and no compression.
Pissed and confused, I took off the timing cover (in record time, too) and rechecked the timing marks: they were dead-nuts accurate.
So I pulled a valve cover, and immediately saw that all of the intake pushrods were bent into boomerangs.
I've got the driver side head off, and Number 1 cylinder is at TDC, and the cam timing marks are dead on, so there is no chance that the timing chain was installed incorrectly.
This engine has MDS (Multiple Displacement System), and YES, all of the new lifters are installed in the correct locations.
I reused the original timing chain tensioner, as it was still in good condition, and there is no damage to it.
If the cam was so far out of time that it would bend the valves, it would never have started in the first place.
The only thing I can think of is that the Variable Valve Timing phaser (camshaft sprocket) has some sort of problem, but it doesn't make any sense: if that phaser fails, it defaults to the fully advanced position, WHICH IS THE POSITION IT IS IN WHEN SETTING THE CAM TIMING.
I really don't know what to think.
Any help is appreciated.