Droped the KAE, Lifter ticking

[Smebbin'd'240]

I just reinstalled my KA-E and it runs like a champ but with ticking under the valve cover. I have heard this on other cars and I know its a lifter. Its been running for about 10 miles and it still ticks. anything I can do to solve this? Oil level is good btw.

[TrunkMonkey]

why are you REinstalling your engine?

-demetrius

[jrc90240sx]

Well i rebuilt my engine, and lost about half to 2/3rd's my lifters (all ticked, really loud), replaced all 12 rockers/lifters with new OEM Nissan ones. still have a lifter tick, pulled the cover looks like about 2-4 are bad. going to see if i have any old ones to put in there place and go have nissan replace the bad ones they gave me.

[TrunkMonkey]

did you bleed them proprerly?

-demetrius

[jrc90240sx]

I would like to say yes, but if you could explain that a little better i would know for sure

[Smebbin'd'240]

no I did not bleed them. It was all rebuilt so is that necessary? (rebuilt head was put on my fresh short block) (That should answer the first question)

[TrunkMonkey]

It was all rebuilt so is that necessary?

yes.

bleed the air off by running the engine at 1000 rpms with no load for about twenty minutes. if this doesn't work, make absolutely sure it's the lifters. if your positive, then replace all of them and make sure you bleed them as soon as they're installed.

-demetrius

[jrc90240sx]

yes i bleed my lifters when i started it back up after i replaced them.

[TrunkMonkey]

Well i rebuilt my engine, and lost about half to 2/3rd's my lifters (all ticked, really loud), replaced all 12 rockers/lifters with new OEM Nissan ones. still have a lifter tick, pulled the cover looks like about 2-4 are bad.

how did you test them to know that they were/are bad?

-demetrius

[jrc90240sx]

you can feel if they move with the vavle cover off, if they move a notacable amount there is a problem. make sure they are not on a cam lob, or you wont be able to tell.

[jrc90240sx]

Also i took it to a machanic i know, that also drives a 240 and AutoX with me. he tested my oil pressure and some other things, and it was the only thing left he could think of was the lifters, i replaced them and it cute the nose in half. then after that and still having a problem with the lifter i took it over to the machine shop, we both looked though things, trying to find what could be the problem. we found that all the rocker/lifters where getting oil. they felt to see if any of the rockers had slack with the cam. 2 of them did, and there where 3 others still under pressure from the cam lob so i was unable to check them.

[Stebo200]

What do you mean by bleed the lifters...can you explain it in detail alittle more.. I just put a rebuilt engine in my 240 and i got alitle tick also...what do you mean by no load.??

[Smebbin'd'240]

Well the morons at my machine shop did this... Normally there are 5 bolts mounting the assembly with one washer under the bolt and then the shaft (don't know the technical name). Well somehow the guys put a bolt, washer, shaft then a washer UNDER the shaft... then no washer on the middle bolt. You can imagine my shock at how much play there was in the first intake rocker.... I should go down there and tell the guy he's a moron and stop smoking that crack

[jrc90240sx]

No Load - Not driving the car, just parked and running in nutral.

You are supose to start up the car and let it run at 1k rpm for 20min to bleed any air out of the lifter after any work that invovles removel of the lifters/rockers from the head.

[SSS]

Or you can submerge the lifter prior to re-installation in clean engine oil you will be running in the motor, and pump the lifter by hand to fill the lifter with oil.

[SSS]

Note: What i just stated isn't a replacement for bleeding the lifter, just helps the process.

[Sleeper s13]

Before i got my 240 i had a GMC pickup truck that had a whistiling breather on the valve cover. from inside the truck it sounded like an irratic ticking niose that at iddle smoothed out when warm into a constant thing. when i went to sell it the buyer was concerned about it but when he pulled the connection out of the valve cover i found that the noise was not comming from within the valve cover but the opening and closing of the air bypass valve. when you put your thumb over it the idle slowes down. My 240 makes the same noise but i cant pull the air bypass valve out of the valve cover to see if that is what it is, it seems to be firmly in place. I hope that at leaste in my case the ticking noise is just caused by an old uniportant part on the valve cover that is not opperating smoothy anymore. The car runs and idles fine. How does a car run with bad lifters?

[SSS]

It runs fine, but just the loudish ticking. i think it may be the cause of some power loss, could anyone back me up on my theory?

[jrc90240sx]

I think its causing a power loss. not having the lifter seat corectly with the cam will shortin the duration and lift of the valve.

Its made me mad that its the lifters still after i replaced them all with nissan OEM parts. realy hope they replace them. i did everything the FSM said to do while installing them.

[SSS]

I believe my worn 107,000mi lifters are the cause of an approximate 7hp loss of power at the fly. That's why i am modifying a spare worn set i have to solid adjustable lifters.

[HackofDestruct]

take and put just bit of auto trans fluid in the oil it will make the noise stop garranteed and it will also clean out the engine a bit

[TrunkMonkey]

take and put just bit of auto trans fluid in the oil it will make the noise stop garranteed and it will also clean out the engine a bit

but it won't remove any air from the lifters. hiding the problem will only make things worse.

-demetrius

[jrc90240sx]

I am just going to take mine in and have it fixed, i am sick of putting money into it and not having it get any better. I should have just gone with soild ajustable lifters, but ohwell. also thinking i might just sell if who ever a take it to cant fix it. will loss alot, but i will know i wont have to pull the engine apart again. and how could i trust an engine for turbo that has already giving me so many problems.