some knocking in head

[fubar_mdw]

been reading religiously(spelling) about this knocking sound from my head
i had this post before about it
http://www.dsmtuners.com/forums/newbie-forum/281964-phantom-knock.html
it has 2 vids
but i did alot of work to the engine since and have yet gotten rid of the knock
i put the vids up after people stopped looking at the thread,
right now i mainly want this up for people doing a search of this and cant find what there knock is and hope my thread helps them if they read through it,
anyway i just put a new fpr on and tightend down the cam caps
before tightening the caps looked like there was some gap between the cams and the rocker arms on the number 4 cylinder,

 

[kenamond]

The lash adjusters(lifters) are responsible for taking up any slack in the rocker/cam/valve assembly. If there was a gap, the lash adjuster wasn't doing its job. Might consider cleaning or just replacing/upgrading the lifters.

 

[6 bolt dreams]

If all the lifters r new in the head u should heere a slite tapping but only for like 15 mins i beleive, ill have to check with my uncle in law on that but im almost positive, but any longer than thatim not sure what i could be if u just put a remanned head on.

 

[fubar_mdw]

yes new remaned head, the lifters are newish not sure how many miles

 

[HighBoostLaser]

Im having the same dilemma right now. I believe is my lifter. Im just going to swap in 3g lifters

 

[bjbaxter]

^^^^^^ yes, i would definately recommend 3g lifters for your problem. might be the only fix to your problem. good luck with it.

 

[HighBoostLaser]

Yeah thats my next plan to do that. I advise anyone that 3g lifters is a great upgrade.

 

[fubar_mdw]

ya i just want to fix this sound,
not sure if i said it or not but i can hear the ticking clean as day if i put a mechanics stethascope on the
pcv valve on the valve cover, sounds like metal scraping metal if i jiggle the cas

 

[turboboy4]

My lifters tick for a few minutes when i start the car in the morning, but it clears up after that.

 

[Boomer420s]

Lifters tend to "tick" a little bit in normal operation. Trying putting a higher octane gas in. Octane reduces detenation, which is a cause of "knock". My two cents.

 

[fubar_mdw]

i only use the highest octane (93) this last time,
just did some reading about pcv valves though,
the only place i hear the knock is from my pcv valve on the valve cover
nothing around only on it.
could the valve in there be broke and just wiggling or something

 

[HighBoostLaser]

no it accually sounds like a stuck lifter maybe

 

[fubar_mdw]

how do i check for a stuck lifter, i have good compression all the way across

 

[HighBoostLaser]

then possibly its just a bearing...

 

[fubar_mdw]

rod bearing?

 

[dikdiamond]

I used Lucas oil treatment to get rid of lifter tick,worked great. When my timing belt broke I bought Topline lifters,and haven't heard any noise since then. Got'em off Ebay pretty cheap,they were 90 bucks shipped but have went up a little since then
eBay Motors: TOPLINE REVISED LASH ADJUSTERS LIFTERS ECLIPSE DSM 4G63 (item 200199941146 end time Feb-23-08 09:12:15 PST)

 

[fubar_mdw]

after talking with a freind im almost certian it has to do with the pcv valve,
or a lifter but the lifters and valves and whole head is brand new,

 

[fubar_mdw]

i do have the revised 3rd gen lifters already,
i switched them around to see if the noise would go somewhere else (it didnt)
i changed the pcv valve and it didnt do anything,
i poke my stethascope all over the head and block pulling the #4 wire off and on
and cant find a single spot this noise is coming from,
i move the cas around back and fourth and the noise either stops or get worse depending on wich way i
go at around 2k rpm's the noise is almost gone but loudest the lower the rpm's

 

[fubar_mdw]

just got my palm pilot today,
i ordered the cable for it to hook into my car
would this give me any kind of answer

 

[fubar_mdw]

well i give up on looking around for this noise, im in the middle of tearing down the motor again and see what the hell is going on inside of it
i hope its someting fixable

 

[fubar_mdw]

okay got everything put back together now,
knock is gone and car sounds great, but now i have very low oil pressure and
negative boost at idle and all the way up to 6k rpms

 

[airmail96]

Wow just seems like one thing after another. Did you figure out what the knock was?

 

[fubar_mdw]

far as i could tell the intake manifold gasket was fubared