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  #1 (permalink)  
Old 24 Sep 2005, 09:08 pm
W.Henry
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Default valve tap

I have a 1990 Acura Legend V6 with 96k miles and a valve tap.I bought it
from a used car lot(caviat).I checked the oil and it is at sufficient
level.The person at said car lot said because it has hydraulic valves no
adjustments can be done to it to remove the tap.I say bullshit.They
scheduled me to bring it in to rectify it one way or another.What say you
ladies and gents as to what may be the cause of the tap?

Thanks in advance,
Will


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  #2 (permalink)  
Old 24 Sep 2005, 10:51 pm
Michael Pardee
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Default Re: valve tap

"W.Henry" <whenry21214@nospamyahoo.com> wrote in message
news:t_OdndVwE_AFZajeRVn-rg@adelphia.com...
>I have a 1990 Acura Legend V6 with 96k miles and a valve tap.I bought it
> from a used car lot(caviat).I checked the oil and it is at sufficient
> level.The person at said car lot said because it has hydraulic valves no
> adjustments can be done to it to remove the tap.I say bullshit.They
> scheduled me to bring it in to rectify it one way or another.What say you
> ladies and gents as to what may be the cause of the tap?
>
> Thanks in advance,
> Will
>
>

I'll leave it to the people who know to tell you whether the lifters are
solid or hydraulic.

If they are hydraulic (and it is true: hydraulic lifters have no
adjustment), I recommend you try the simple things first. This is one of the
few situations in which I recommend an engine flush. Follow the directions
exactly, ending with an oil change. Again breaking with normal
recommendations, I recommend you fill with regular "dino" oil (rather than
synthetic, just because the purpose doesn't justify the extra cost of
synthetic) in the lightest grade approved for the car - consult the owner's
manual. Drive the car for several days - if the tap persists, do the engine
flush again. If still no good after a week or so, time for a pro to replace
the lifter. It is usually a good idea to replace all the lifters in that
half of your V6 - the lifters aren't usually very expensive compared to the
labor required to get to them and all the lifters have been in the same
environment..

Collapsed lifters are usually an indication of sludge fouling, caused by
neglect of the oil changes.

Mike


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  #3 (permalink)  
Old 25 Sep 2005, 12:58 pm
Natman
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Posts: n/a
Default Re: valve tap

On Sat, 24 Sep 2005 21:08:20 -0400, "W.Henry"
<whenry21214@nospamyahoo.com> wrote:

>I have a 1990 Acura Legend V6 with 96k miles and a valve tap.I bought it
>from a used car lot(caviat).I checked the oil and it is at sufficient
>level.The person at said car lot said because it has hydraulic valves no
>adjustments can be done to it to remove the tap.I say bullshit.They
>scheduled me to bring it in to rectify it one way or another.What say you
>ladies and gents as to what may be the cause of the tap?
>
> Thanks in advance,
> Will
>

Generally speaking the hydraulic lifters on a 90 Legend do not require
regular adjustment. However as the valves and valve train wear it is
possible for the adjusters to run out of travel. This will cause valve
tapping. The adjusters can be recentered, so that they are once again
in the middle of their adjustment range.

My 90 Legend had this problem and recentering the exhaust adjusters
cured it.

Your car could also be suffering from a sludge buildup or have a
wornout adjuster. Best of luck.
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  #4 (permalink)  
Old 25 Sep 2005, 03:32 pm
W.Henry
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Posts: n/a
Default Re: valve tap


"Natman" <nat_mann@yahoo.com> wrote in message
news:cgldj1dg0bld69actjl1g7umrr8bihng25@4ax.com...
: On Sat, 24 Sep 2005 21:08:20 -0400, "W.Henry"
: <whenry21214@nospamyahoo.com> wrote:
:
: >I have a 1990 Acura Legend V6 with 96k miles and a valve tap.I bought it
: >from a used car lot(caviat).I checked the oil and it is at sufficient
: >level.The person at said car lot said because it has hydraulic valves no
: >adjustments can be done to it to remove the tap.I say bullshit.They
: >scheduled me to bring it in to rectify it one way or another.What say you
: >ladies and gents as to what may be the cause of the tap?
: >
: > Thanks in advance,
: > Will
: >
: Generally speaking the hydraulic lifters on a 90 Legend do not require
: regular adjustment. However as the valves and valve train wear it is
: possible for the adjusters to run out of travel. This will cause valve
: tapping. The adjusters can be recentered, so that they are once again
: in the middle of their adjustment range.
:
: My 90 Legend had this problem and recentering the exhaust adjusters
: cured it.
:
: Your car could also be suffering from a sludge buildup or have a
: wornout adjuster. Best of luck.

Thanks guys,I have an appointment with the dealer to take care of this.I
think after that I'm going to do the sludge removal thing .Seeing that it
probably has never been done it would most likely be a good idea.


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  #5 (permalink)  
Old 25 Sep 2005, 10:59 pm
Acura God
Guest
 
Posts: n/a
Default Re: valve tap

Exhaust valves are adjustable but the noise usually comes from valve train
wear due to sludge buildup. The exhaust pushrods will wear on the ends
causing them to mushroom which increases the clearance in the valvetrain.
Usually only proper way to fix is to replace components that are worn. Good
Luck

David Short
Acura God

"W.Henry" <whenry21214@nospamyahoo.com> wrote in message
news:t_OdndVwE_AFZajeRVn-rg@adelphia.com...
>I have a 1990 Acura Legend V6 with 96k miles and a valve tap.I bought it
> from a used car lot(caviat).I checked the oil and it is at sufficient
> level.The person at said car lot said because it has hydraulic valves no
> adjustments can be done to it to remove the tap.I say bullshit.They
> scheduled me to bring it in to rectify it one way or another.What say you
> ladies and gents as to what may be the cause of the tap?
>
> Thanks in advance,
> Will
>
>



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