Diag my engine noise

[naste87t]

Rocker shafts broke?

I'm with you on this one, sounds like the rocker shaft broke and a rocker harm is just floating on the valve, I would guess drivers side.. take it apart and let us know..

 

[TURBOWNER]

engine noise

that sounds like a connecting rod knock. it will go away as it warms up and increase in noise as you rev it lightly. hope I am wrong! good luck

 

[forzfed]

noise does go away once it runs a bit, but once you throttle it it comes back

It almost sounds like a rod knock. If you take the oil filler cap off, is the noise louder? If it's a rod knock you could always start pulling plug wires and see if it goes away. Best of luck.

 

[m233roller]

Sounds like a bad lifter to me, pour a can of sea foam in it and see if it changes.

 

[86Nick]

I'm with you on this one, sounds like the rocker shaft broke and a rocker harm is just floating on the valve, I would guess drivers side.. take it apart and let us know..

yes, it sound like more the drivers side

 

[hiboom]

shaft

if the rocker shaft broke and the rocker was not opening and closing the valve would'nt there be a mis fire present or backfire?

 

[TURBOWNER]

Delco are actually not STP, they are just the same color. You can do a little homework and see for yourself. They are actually very well built filters. Not a big deal.

 

[williamsGN]

Delco are actually not STP, they are just the same color. You can do a little homework and see for yourself. They are actually very well built filters. Not a big deal.

Actually they now are junk, plastic cages, inferior filtering... there have been many threads on this. I stopped buying them when they started with the plastic internals. Get a Wix or Napa -

Pop the valve cover and it'll answer the rocker shaft possibility real quick and you can check for a bent pushrod easily. Wouldn't drive it till its resolved.