technical question: wierd sound in b16a head.

[mrpilot]

sound come when i start the car after few hours park. especially @ morning. sound stop when the engine oil indicator goes off (about 3-4 seconds). seem like engine oil not fully pumped to all part of engine that need to lubricate. happen since last week.oil change every 3000km. using semisyntetic 15-40 honda lube. help me to solve this prob:joyman:

 

[camshaft]

what kind of sound? is it like nyeett! nyeett! or...kluk! kluk!...usually when turning the ignition key right before start the engine...the engine will make some sound like checking all the sensor 1st...after starting the engine...usually the rpm goes up a bit until the oil is fully lubricate the whole engine...i dont thing there's any problem if the engine check light or engine oil check light show no sign of problem...that is if your sensor are all working...have u send it to foreman for checking?

 

[mrpilot]

taktaktaktak..that how it sound. b4 this oil indicator will goes off as soon as my engine run. 1 more thing, last week the engine light show up. but go back to normal till now. is it possible to check the error code now? does the ecu still keep the last error code? coz i check it when no CEL warning. it show injector n TPS error. code 7 n 16. my car got no prob when i see foremen. n the prob come when i reach home.

 

[E-Tech]

Sound from hydrulic lifters (looks like bullet).... it works with oil...
If no/not filled completely oil inside, it will make that noise....
It might need cleaning/servicing/change (16pcs)
This is best case senario.

Worst case- crank bearing "makan" already.

What's you engine set up?
Over rev recently?

If lazy to check all those above...
Try change diff oil first.... go thicker this time....

 

[mrpilot]

rev limit @ 8000rpm. seldom reach that point. usually max 7000rpm.last time i want to change oil to motul semi. but the shop wrongly pick the motul 10-40 mineral. run with that
my setup:
b18c bottom
b16a top.
simota penis
pnp head
h22a injector
chrome tuned ecu.

and........

never tune after:
downgrade to stock b16a cam (previously using aftermarket cam.)
change distributor
ngk R09 plug cable
oilfilter

 

[mdsb3]

worries about lubrication oil nowaday.
too many clon and no quality at all.
try dismantle ur vtec soleniod 3skru,c inside filter have metalchip or not.
have :thumpdown:metalchip confirm ur bearing out already.:thumpdown:

 

[xtremeleo]

3~4secs of tak-tak-tak? i wudnt worry much about it, its a sign of a worn out oil pump / lubrication system. ive had the tak-tak-tak sound problem wit my 4g91 for few months, it was worse den mesin jahit!! the sound doesnt go even when warmed up, hoho.. now dah takde, as i said lubrication issue. the hydraulic lifters tend to do dat after sum years of service, or if not taken care properly. use good oil and they'll be quiet

 

[mrpilot]

for mitshubishi, i would not worry as this. i also own a 4g93 with mesin jahit sound. but now, 1st time it was from my Vtec. that would be my nightmare...

 

[shah5755]

bro my car also got taktak sound every morning when start but after a few second will be ok....ask my fren oredi they said normal for vtec engine got knocking sound a bit.....I also use the vtec semi synthetic oil....

 

[mrpilot]

it never happen to me till this time. b4 this my engine run very quite. only fan sound n ekzos can be hear.

 

[E-Tech]

Dun use vtec 15/40 oil
Many known to face tis noisy...

Change to 15/50.
I personally use motul 300v.

Try change oil.
Rgds.

 

[vtec8888]

this thing tak tak tak.. sound was happen to me b4,suspect was pivot LMA,change it to type r all of it 8pcs.. setle no more tak tak tak sound.. hepy driving now.. :)

 

[hattech-v]

seem like LMA problem... b16a head tend to have this problem... very common... change the LMA to type r.

 

[mrpilot]

LMA changed. checked the selenoid cover/filter. there some metal debris. confirm bearing. car oredy parked for 3 weeks..scare to drive. lol. does the debris flow around block n piston? or just stucked in oil filter n the filter inside that vtec selonoid?? do i need full overhaul or just the change the bearing only??

 

[zollo]

hi sifu wat is LMA sorry noob here i face the same problem too...

 

[ap3xi]

Bro Camshaft, mine is the nyeeeeet sound! what is that?

 

[jombiee]

hi sifu wat is LMA sorry noob here i face the same problem too...

Lost Motion Assembly
they are a nipple that sits under the rocker and absorbs the vibration of the rockers when the VTEC is not engaged (VTEC locks all 3 rockers together when it is activated otherwise the middle rocker arm sits on it's own when the 2 flanking nonVTEC rockers are in operation) so that the rocker arm isn't noisy and rattling around. The LMA is a noise suppressor.
http://www.team-integra.net/forum/display_topic_threads.asp?ForumID=10&TopicID=33276