SOLVED: Yet another 1.7 "clattering" investigation NOW WITH VIDEO, What to look for? Options

[jrmdir]

Hello:

I'm still trying to sort numerous suspect items related to idle, mixture and hesitation in this recently acquired car but the "valve?" noise is driving me crazy while I work on various adjustments.

I've adjusted the valves at least three times and believe there is no excess clearance but it seems to have gotten louder recently so I'm going back under to check things out - and this time plan to take the rocker arms off to check for new looseness or anything weird that would throw the feeler gauge measurement off.

I've read about possible valve seat detachment - is there a way to check for this short of removing the heads?

Anything else I should look for? What are the chances of rod knock instead of valvetrain?

Notes: Mileage unknown. Car sat for 3+ years and of course the seller claimed "ran well when parked" LOL! Compression is good when warmed up, not so good in #1 and #3 when cold. No blue smoke. Hard to tell but the loudest noise seems to be #2 but that's just a guess.

Thanks!

Ron

[rjames]

As my chance you have hydraulic lifters? If so, they must be adjusted to a different spec and can take awhile to quiet down (fill up with oil), especially if the car has been sitting for a long time.