Intermittent valve train noise

[rzaenglein]

Noise is on passenger side, its louder and more evident than ever when first started. after about 20 seconds the noise will go away, it will then come and go as the engines heats up and is at operating temp. I replaced lash adjusters and followers. I found one lash adjuster that was easily collapsed unlike the others. I figured that was the issue, but noise is still there. any ideas? Makes the car have an intermittent miss as well and threw a code for running rich. Can a cam phaser cause a miss fire?

 

[Paps]

Phasers.

 

[Dino Dino Bambino]

Can a cam phaser cause a misfire?

Yes, and that's the most likely culprit.

 

[rzaenglein]

Gonna pull the valve cover off and take a closer look. If I dont see anything. I'm going to replace the phaser.

 

[rzaenglein]

here is a video of the car running with the valve cover off.

 

[skwerl]

I assume that noise is coming from the phaser and not one of the lifters. Several good writeups on swapping phasers around here somewhere.

 

[BadPiggy]

Looking at you mods in your sig...I'd say you beat the hell out if it.

With that said, if a phaser is bad, I'd probably buy the complete timing kit and change all of it out. The kit is roughly $250 from Tasca and that's new phasers, chains, guides...all of it. That's just how I would do it.

 

[Dino Dino Bambino]

Looking at you mods in your sig...I'd say you beat the hell out if it.

That's quite likely. A few forays past 6500rpm will eventually take their toll on the engine.

With that said, if a phaser is bad, I'd probably buy the complete timing kit and change all of it out. The kit is roughly $250 from Tasca and that's new phasers, chains, guides...all of it. That's just how I would do it.

Agree. It would be a false economy to just replace the phasers if the rest of the timing kit is the original factory stuff.

 

[sportinawoody]

05 mustang = junk phasers. phasers have been updated since yours came out