lifter vs. VTC
#1
lifter vs. VTC
ok so, the noise was really starting to bother me today as i pulled into my driveway, poped the hood to check it out , from whats been described on the org sounds like a loud ticking , possibly a VTC tick , my dad happened to be washing his car and he thinks its lifter tick , so i unplugged both of the VTC solanoids to see if it stoped and the noise kept going. most i can tell you guys is the car has 180k miles , it's a 5spd , the noise is doesn't get louder or softer while driving, its always a constant volume but it increases ticks with RPM moving , is there anyway i can test to be sure that its the VTC OR the lifters in the car?
#4
Originally Posted by MyBlue92Maxima
i unplugged both of the VTC solanoids to see if it stoped and the noise kept going.
#5
Originally Posted by Jeff92se
Short length of hose and put it to your ear. That should be enough to pinpoint the tick location
#7
Originally Posted by MyGreenMax94
You may have some slack in the timing chain due to worn tensioners...This could cause a constant clack..
#11
Originally Posted by 92 Max
Go into the maintainance stickies above. There's a mention of VTC noise. Click it and there are two Bulletins about VTC noice and how to diagnose it from other possible causes.
#13
Our records indicate that the following shipment has been delivered:
Tracking number: Ship (P/U) date: Mar 23, 2006
Delivery date: Mar 29, 2006 16:15 PM
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Service type: FedEx Home Delivery
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Recipient Information
Crossville
TN
US
38555
Tracking number: Ship (P/U) date: Mar 23, 2006
Delivery date: Mar 29, 2006 16:15 PM
Sign for by: Signature Not Req
Service type: FedEx Home Delivery
Packaging type: Package
Number of pieces: 1
Weight: 19.0 LB
Recipient Information
Crossville
TN
US
38555
Originally Posted by MyGreenMax94
It was??
#14
They usually knock
Originally Posted by Jeff92se
Our records indicate that the following shipment has been delivered:
Tracking number: Ship (P/U) date: Mar 23, 2006
Delivery date: Mar 29, 2006 16:15 PM
Sign for by: Signature Not Req
Service type: FedEx Home Delivery
Packaging type: Package
Number of pieces: 1
Weight: 19.0 LB
Recipient Information
Crossville
TN
US
38555
Tracking number: Ship (P/U) date: Mar 23, 2006
Delivery date: Mar 29, 2006 16:15 PM
Sign for by: Signature Not Req
Service type: FedEx Home Delivery
Packaging type: Package
Number of pieces: 1
Weight: 19.0 LB
Recipient Information
Crossville
TN
US
38555
#15
http://forums.maxima.org/showthread....hreadid=126237
If this link doesn't work, it's in the red highlited section above, with "General Maintainance" in the title, when that opens it's in the first dozen or so lines marked VTC TSB.
If this link doesn't work, it's in the red highlited section above, with "General Maintainance" in the title, when that opens it's in the first dozen or so lines marked VTC TSB.
#17
Originally Posted by mattcomet82
sorry to burst your bubble, but 3rd gen maxs have overhead camshafts. therefor no pushrods or lifters. do just like jeffy said and get a hose to your ear to pinpoint the noise.
However, every time someone suspects lifter noise, it usually ends up being VTC noise or Timing Chain tensioner noise.
#18
Originally Posted by mattcomet82
sorry to burst your bubble, but 3rd gen maxs have overhead camshafts. therefor no pushrods or lifters. do just like jeffy said and get a hose to your ear to pinpoint the noise.
#20
ahhh things im not understanding , i thought the camshaft spins , moves the lifters , controls the rockers , makes the pistons move , it's more complicated then that? damn me, hummm , so , can we have lifter noise or not? , should i assume it's VTC or tensioner noise and now not lifter tick?
also: assuming it's bad VTC can i take a junk engine and use the VTC's off of it?
also: assuming it's bad VTC can i take a junk engine and use the VTC's off of it?
#21
I guess you can have lifter noise, but I've every time anyone mentions clicking, lifter type noise here, it turns out to be VTCs or Timing Chain tensioners are the culpret.
Also, if you take out the VTCs, rebuild them or buy new ones. VTCs from the junkyard are probably just as old as yours and ready to tick (if they aren't already).
Also, if you take out the VTCs, rebuild them or buy new ones. VTCs from the junkyard are probably just as old as yours and ready to tick (if they aren't already).
#22
to bad im only 18 and not THAT mechanically inclined , i heard rebuilding it was a bi*ch , plus it's what , 400 dollars for the rebuild kit? or is that for new ones , im sure i could figure out how to put thme in myself , nissan charges 2000 to do them , what a joke , i could do that myself i guess. i just dont have that much money to drop into a car thats 14 years old and already has 180k miles :-/
#23
Interesting ..
I have a 92 SE sitting next to my house. It runs but makes a really, really loud "clacking noise", I originally thought it was the VTC failure, my father and I shorted them out and the noise went away only slightly. Then I had a bad tensioner replaced, I know it was bad because i could see the damage done by the loose chain. But there is still noise. We had a freind take a look, and he said he was fairly confident it was lifter tick. Now that its getting warm out, im looking into taking the engine out and seeing what i can do. I was under the impression that VTC s rarely do more than make a quiet ticking noise.
I'd like some opinions on taking the engine out. This isn't a chore or something that needs to be done, It would just be for fun. But if its a huge pain in the rear ill reconsider. Anyone have any experience, or any tips?
I'd like some opinions on taking the engine out. This isn't a chore or something that needs to be done, It would just be for fun. But if its a huge pain in the rear ill reconsider. Anyone have any experience, or any tips?
#24
Rebuilding the VTC is not hard at all (20 minutes each) and the REBUILD kits are about $60 each. The kicker is getting at them and pulling them out without damaging the valves. That takes time (the first time), some engine experience and many scraped knuckles. It took me three weeks of leasurely work. If you went straight through I imagine it would still take several days. Buying new VTCs cost upwards from $450 each, and to have the dealership do them would cost $2000+. If you can find some shadetree mechanic to do it or assist you, it may cost less.
If not, run the toyota filter described in the stickys and I used 15W-40 Pensoil mature car or high mileage (or some euphemism like that) oil and it quieted them a little.
If not, run the toyota filter described in the stickys and I used 15W-40 Pensoil mature car or high mileage (or some euphemism like that) oil and it quieted them a little.
#25
Originally Posted by MyBlue92Maxima
to bad im only 18 and not THAT mechanically inclined , i heard rebuilding it was a bi*ch , plus it's what , 400 dollars for the rebuild kit? or is that for new ones , im sure i could figure out how to put thme in myself , nissan charges 2000 to do them , what a joke , i could do that myself i guess. i just dont have that much money to drop into a car thats 14 years old and already has 180k miles :-/
#26
Originally Posted by 92 Max
Rebuilding the VTC is not hard at all (20 minutes each) and the REBUILD kits are about $60 each.
#27
Originally Posted by Josh
You talking pesos? mine were $32 each I think courtesy has them for around that price if he doesn't have a local dealer.
#31
Originally Posted by MyBlue92Maxima
yea, i actually looked at that post, i ticking just got bad so now im thinking about doing it , do you know about how long it took you to rebuild those VTC's?
#32
Originally Posted by MyBlue92Maxima
ok so, the noise was really starting to bother me today as i pulled into my driveway, poped the hood to check it out , from whats been described on the org sounds like a loud ticking , possibly a VTC tick , my dad happened to be washing his car and he thinks its lifter tick , so i unplugged both of the VTC solanoids to see if it stoped and the noise kept going. most i can tell you guys is the car has 180k miles , it's a 5spd , the noise is doesn't get louder or softer while driving, its always a constant volume but it increases ticks with RPM moving , is there anyway i can test to be sure that its the VTC OR the lifters in the car?
At idle the VTC are OFF, so unplugging them does nothing. By grounding them you are actually turning them ON. There is a spring in the VTC that goes bad, so when your at idle the spring isn't strong enough to return the sproket to the neutral (un-advanced timming) position. understand?
So by grounding the proper wire you can turn both vtc solenoids ON, the clacking assembly then compresses the spring thereby rotating the intake cam to advance the timming. The clacking should then stop.
#34
Guest
Posts: n/a
i have a 92se i pulled the valve covers and chain cover i found one broken
roller rocker arm on 1 intake valve and on left vtc the big metal washer/spacer/end cap ring?? was broken and broke a hole in the lower chain cover i got a dead parts ve motor so theres my cover and rocker arm and used vtcs i'll inspect the chain and stuff
now my question please is how do i know which vtcs to use i was thinking id leave my right one there and swap the left but this is all new to me
i guess i could get the rebuild kit but im trying to imagine what it comes with or how they work ill donate and search someday soon but till then .
roller rocker arm on 1 intake valve and on left vtc the big metal washer/spacer/end cap ring?? was broken and broke a hole in the lower chain cover i got a dead parts ve motor so theres my cover and rocker arm and used vtcs i'll inspect the chain and stuff
now my question please is how do i know which vtcs to use i was thinking id leave my right one there and swap the left but this is all new to me
i guess i could get the rebuild kit but im trying to imagine what it comes with or how they work ill donate and search someday soon but till then .
#35
wait so your vtc cap broke? I'd be hesistent to reuse the engine because who knows where all those broken parts went. Look up the thread I made a few pages back about the VTC writeup that should help you with alot. Basically the VTC repair kit comes with a spring, new end cap, and 2 seals. and if you are going to do them you should definately do both (especially if you are going to do the rear one), I would highly suggest buying the rebuild kit and not using the ones out of the blown motor because its just not worth it to do the job over again when those go out.
#36
Guest
Posts: n/a
yeah for sixty bucks sounds like cheap insurance
and i found 2 big pieces of the (cap?)one is still at large but i think it exited through this big as@ hole in the lower cover(i need a camera)
and i also found both pieces of the rocker arm
but ill be sure to look for others and inspect the chain
kit comes with new end cap huh?must break alot "planned obselecence"
and i found 2 big pieces of the (cap?)one is still at large but i think it exited through this big as@ hole in the lower cover(i need a camera)
and i also found both pieces of the rocker arm
but ill be sure to look for others and inspect the chain
kit comes with new end cap huh?must break alot "planned obselecence"
#37
Originally Posted by Yourself
yeah for sixty bucks sounds like cheap insurance
and i found 2 big pieces of the (cap?)one is still at large but i think it exited through this big as@ hole in the lower cover(i need a camera)
and i also found both pieces of the rocker arm
but ill be sure to look for others and inspect the chain
kit comes with new end cap huh?must break alot "planned obselecence"
and i found 2 big pieces of the (cap?)one is still at large but i think it exited through this big as@ hole in the lower cover(i need a camera)
and i also found both pieces of the rocker arm
but ill be sure to look for others and inspect the chain
kit comes with new end cap huh?must break alot "planned obselecence"
#38
Originally Posted by eric93SE
At idle the VTC are OFF, so unplugging them does nothing. By grounding them you are actually turning them ON. There is a spring in the VTC that goes bad, so when your at idle the spring isn't strong enough to return the sproket to the neutral (un-advanced timming) position. understand?
So by grounding the proper wire you can turn both vtc solenoids ON, the clacking assembly then compresses the spring thereby rotating the intake cam to advance the timming. The clacking should then stop.
So by grounding the proper wire you can turn both vtc solenoids ON, the clacking assembly then compresses the spring thereby rotating the intake cam to advance the timming. The clacking should then stop.
oh :O , ok , looks like i need to ground them and test , if i ground them and the ticking is still there , i can assume it's bad tensioners or a bad lifter somewhere , if i ground them , can i reattach the wire and make the VTC's work properly again? assuming its not the VTC's?
#39
Originally Posted by slickblack94
Brian,you looking for a CAI for your new max lol. I still have'nt put it on yet.
Seems like alot of work to move the fuse thingy...
Seems like alot of work to move the fuse thingy...