07 Valley cover

[crownvic31]

My cylinder head went kaboom.

Put everything back together. After the original vlom went back on and everything was tripled check. Went to start it and the passenger side head started knocking but the driver side stopped knocking. A minute later a big knock and everything settled with a horrible miss. Engine light on and stability service light on. Misfire cylinder 6. Swapped injectors, swapped coils and nothing.

Any recommandations?

 

[j91z28d1]

My cylinder head went kaboom.

Put everything back together. After the original vlom went back on and everything was tripled check. Went to start it and the passenger side head started knocking but the driver side stopped knocking. A minute later a big knock and everything settled with a horrible miss. Engine light on and stability service light on. Misfire cylinder 6. Swapped injectors, swapped coils and nothing.

Any recommandations?

compression check?


do these afm but not enabled engines use the afm lifters? if so, a lifter might have gotta stuck. if you can't do a compression check, at least pull the valve cover off that side and have someone crank it while you watch the rockers move.

 

[j91z28d1]

so I was thinking, if these do have afm lifters installed, it might not be a good idea to block off those oil passageways under the vlom. I've read that afm lifters need to vent oil from there or pressure will build up and releasing the pins deactivating the lifters in the same way the solenoids opening does. just not controlled

 

[Geotrash]

My cylinder head went kaboom.

Put everything back together. After the original vlom went back on and everything was tripled check. Went to start it and the passenger side head started knocking but the driver side stopped knocking. A minute later a big knock and everything settled with a horrible miss. Engine light on and stability service light on. Misfire cylinder 6. Swapped injectors, swapped coils and nothing.

Any recommandations?

Shit. I suspect you're gonna have to pull those heads and get those lifters out of there. Inspect the cam, and go back in with new non-AFM lifters, OEM trays and any other parts. Can do it in a long Saturday if everything goes smoothly. That seriously sucks, man.

 

[petethepug]

Any luck with what’s going on yet? Stupid question but, did you triple check your ht leads for the wrong orientation? Someone I know with the same name as me did that and scared the ship out of them until it was caught.

 

[crownvic31]

Any luck with what’s going on yet? Stupid question but, did you triple check your ht leads for the wrong orientation? Someone I know with the same name as me did that and scared the ship out of them until it was caught.

Ht leads? Sorry but whats that?

 

[crownvic31]

Removed the valve cover today. For some reason cant post the video but i have a stuck/collapsed dod lifter on cylinder 6.

Can i just do this

We free up a stuck lifter on a 6.2L Displacement On Demand (DOD). This is a common problem on these DOD or AFM (Active Fuel Management) engines. The... | By Shop Tool Reviews | Facebook

We free up a stuck lifter on a 6.2L Displacement On Demand (DOD). This is a common problem on these DOD or AFM (Active Fuel Management) engines. The...

fb.watch

 

[petethepug]

Ht leads? Sorry but whats that?

Spark plug wire = High Tension lead.

Did you have oil pressure when the slapping was going on?

 

[Fless]

Removed the valve cover today. For some reason cant post the video but i have a stuck/collapsed dod lifter on cylinder 6.

Can i just do this

We free up a stuck lifter on a 6.2L Displacement On Demand (DOD). This is a common problem on these DOD or AFM (Active Fuel Management) engines. The... | By Shop Tool Reviews | Facebook

We free up a stuck lifter on a 6.2L Displacement On Demand (DOD). This is a common problem on these DOD or AFM (Active Fuel Management) engines. The...

fb.watch

TYF can't host videos. Facebook works for some members, but others don't use it (personal choice). Post it to YouTube or other host and add the link to your post here.

 

[j91z28d1]

Removed the valve cover today. For some reason cant post the video but i have a stuck/collapsed dod lifter on cylinder 6.

Can i just do this

We free up a stuck lifter on a 6.2L Displacement On Demand (DOD). This is a common problem on these DOD or AFM (Active Fuel Management) engines. The... | By Shop Tool Reviews | Facebook

We free up a stuck lifter on a 6.2L Displacement On Demand (DOD). This is a common problem on these DOD or AFM (Active Fuel Management) engines. The...

fb.watch

if it were mine, I'd unsick the lifter, vent those ports and try again. if you have afm lifters you need to vent that oil pressure, if you have standard lifters you block those off not to bleed off oil pressure for no reason. being as you afm lifters have never been used, once they released and collapsed it got stuck. that's my best guess. there's a youtube guy that dives deep into all this afm stuff, taking lifters apart and things.


I don't have first hand knowledge of them, but that was my take away from his explanation


edit. I'm pretty convinced this guys has sorted out the work around for these trucks. jump to 17mins and he gets to the release and then how to vent the oil so it doesn't happen again.