SR woes. Rapid ticking under valve cover. VIDEO - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

sr240mike · 10-08-2004, 06:10 PM

About 2 weeks after replacing a failed injector Im getting this loud rapid tick from under the valve cover. The car has been hard to start in the mornings as well. The sound starts once the car starts to get warm and when it is warm. For a few days it went away but now it just getting worse and worse. I have changed the oil twice since the failed injector flooded the cylinder and pulled the valve cover to see if anything looked wrong but nothing seemed bad. Today I looked down at the boost gauge and at idle it was only reading 10 in/hg instead of the 18-20 it normally reads.
The car is still running quite strong though so I am puzzled as to what it is. It sounds bad though. Any help would be greatly appreciated.

97SilviaRB · 10-08-2004, 11:24 PM

wheres the video?

mbmbmb23 · 10-09-2004, 09:25 AM

Quote:

Originally Posted by sr240mike

About 2 weeks after replacing a failed injector Im getting this loud rapid tick from under the valve cover. The car has been hard to start in the mornings as well. The sound starts once the car starts to get warm and when it is warm. For a few days it went away but now it just getting worse and worse. I have changed the oil twice since the failed injector flooded the cylinder and pulled the valve cover to see if anything looked wrong but nothing seemed bad. Today I looked down at the boost gauge and at idle it was only reading 10 in/hg instead of the 18-20 it normally reads.
The car is still running quite strong though so I am puzzled as to what it is. It sounds bad though. Any help would be greatly appreciated.

Try changing the oil again, but use 20W 50 oil and see if that helps.

-m

tErbo b00st · 10-09-2004, 04:18 PM

My head was ticking very loudly too...I had to replace my entire head because the Cams and the U's that cams sit in were worn away more than just bad. Just somethin to think about.

Var · 10-09-2004, 05:28 PM

my head was ticking when i started my car..it hadn't been started in about a month. then i took it to a drift event and it went away

Muzzy · 10-09-2004, 10:48 PM

air in the lifter dude..im pretty sure i had this same prob...but mine got quite when it was warm but super loud when it started up. sounded like a diesel mercedes rite??

silviasichigo · 10-10-2004, 05:37 AM

Sounds like lash adjusters to me start up and is real loud right? And if you rev it it will crack real loud really quickly and then no sound iuntil your rev again right? if that sound like the description of your problem then must be your lash adjusters. rebuild the vavle train if that is the case. eventually they will start chipping and flaking and you will then have chunks of the lashers on your cams and bearing seats and then pow engine give out. IT happend to my 180 oil flush will help with the flakes but you have to replace the lash adjusters IF THAT SOUNDS LIKR THE PROBLEM.

Touring240 · 10-10-2004, 12:18 PM

His problem is that it ticks loud ONCE its warmed up not when cold.

I have the problem that you guys are describing. I had a leaky injector and my oil became diluted in fuel.

After a hard night of driving I heard a ticking coming from the back of the valve cover. When I started it the next day it only ticked for a few seconds when started. It now does this everytime I start it when cold. Suggestions?

Vatche · 10-11-2004, 02:22 AM

i have a ticking too, im sure its always there but my exhaust is so loud in the car i can barely hear it while driving, ive been told its the lifters, and that is what i think it could be.

how hard would that be to fix?

*fliprayzin240sx* · 10-11-2004, 03:47 AM

Dont know how loud it is but if u can hear it from inside the car, then its not just the lifters needing to be bled. Could bad valve guides cause it to tick too?

sr240mike · 10-11-2004, 09:32 AM

Update: The low vacuum was caused by a loose connection to the boost gauge. I used a quart of this oil flush I saw at napa auto parts and changed to a thicker 20w50 as suggested. The oil looked a bit nastier than the last oil change so I guess that the flush loosened up some gunk. I started the car and the noise went away for about 15 minutes and then it came back. I kept driving it for about 2 hours and the noise is slowly going away. Thanks for all the help guys!

10-08-2004, 06:10 PM	#1
sr240mike Zilvia FREAK! Join Date: Apr 2004 Location: California, Norcal biiaatch Posts: 1,185 Trader Rating: (0) Feedback Score: 0 reviews	SR woes. Rapid ticking under valve cover. About 2 weeks after replacing a failed injector Im getting this loud rapid tick from under the valve cover. The car has been hard to start in the mornings as well. The sound starts once the car starts to get warm and when it is warm. For a few days it went away but now it just getting worse and worse. I have changed the oil twice since the failed injector flooded the cylinder and pulled the valve cover to see if anything looked wrong but nothing seemed bad. Today I looked down at the boost gauge and at idle it was only reading 10 in/hg instead of the 18-20 it normally reads. The car is still running quite strong though so I am puzzled as to what it is. It sounds bad though. Any help would be greatly appreciated. __________________ TWO IN THE COOT, ONE IN THE POOT Last edited by sr240mike; 10-09-2004 at 01:27 AM..

10-09-2004, 05:28 PM	#5
Var Post Whore! Join Date: Sep 2003 Location: Norcal Age: 43 Posts: 5,032 Trader Rating: (0) Rides Gallery: Var Feedback Score: 0 reviews	my head was ticking when i started my car..it hadn't been started in about a month. then i took it to a drift event and it went away __________________ Hi

10-09-2004, 10:48 PM	#6
Muzzy Zilvia FREAK! Join Date: Jan 2003 Location: TX Posts: 1,555 Trader Rating: (0) Feedback Score: 0 reviews	air in the lifter dude..im pretty sure i had this same prob...but mine got quite when it was warm but super loud when it started up. sounded like a diesel mercedes rite?? __________________ lemme have a dollar

10-11-2004, 03:47 AM	#10
fliprayzin240sx Man w/ CTSV & a Car Seat Join Date: Aug 2002 Location: Tampa Posts: 17,998 Trader Rating: (19) Rides Gallery: fliprayzin240sx Feedback Score: 19 reviews	Dont know how loud it is but if u can hear it from inside the car, then its not just the lifters needing to be bled. Could bad valve guides cause it to tick too? __________________ If you think Zilvia has too many assholes... CLICK HERE!!!

10-11-2004, 09:32 AM	#11
sr240mike Zilvia FREAK! Join Date: Apr 2004 Location: California, Norcal biiaatch Posts: 1,185 Trader Rating: (0) Feedback Score: 0 reviews	Update: The low vacuum was caused by a loose connection to the boost gauge. I used a quart of this oil flush I saw at napa auto parts and changed to a thicker 20w50 as suggested. The oil looked a bit nastier than the last oil change so I guess that the flush loosened up some gunk. I started the car and the noise went away for about 15 minutes and then it came back. I kept driving it for about 2 hours and the noise is slowly going away. Thanks for all the help guys! __________________ TWO IN THE COOT, ONE IN THE POOT

10-08-2004, 11:24 PM	#2
97SilviaRB Leaky Injector Join Date: Nov 2003 Location: North Carolina Posts: 144 Trader Rating: (0) Feedback Score: 0 reviews	wheres the video?

10-09-2004, 04:18 PM	#4
tErbo b00st Leaky Injector Join Date: Jun 2004 Location: Chicago Posts: 120 Trader Rating: (0) Feedback Score: 0 reviews	My head was ticking very loudly too...I had to replace my entire head because the Cams and the U's that cams sit in were worn away more than just bad. Just somethin to think about.

10-10-2004, 05:37 AM	#7
silviasichigo Zilvia Addict Join Date: Mar 2002 Location: Japan Age: 49 Posts: 782 Trader Rating: (0) Rides Gallery: silviasichigo Feedback Score: 0 reviews	Sounds like lash adjusters to me start up and is real loud right? And if you rev it it will crack real loud really quickly and then no sound iuntil your rev again right? if that sound like the description of your problem then must be your lash adjusters. rebuild the vavle train if that is the case. eventually they will start chipping and flaking and you will then have chunks of the lashers on your cams and bearing seats and then pow engine give out. IT happend to my 180 oil flush will help with the flakes but you have to replace the lash adjusters IF THAT SOUNDS LIKR THE PROBLEM.

10-10-2004, 12:18 PM	#8
Touring240 Zilvia Junkie Join Date: Jan 2003 Location: Victoria BC Posts: 432 Trader Rating: (0) Feedback Score: 0 reviews	His problem is that it ticks loud ONCE its warmed up not when cold. I have the problem that you guys are describing. I had a leaky injector and my oil became diluted in fuel. After a hard night of driving I heard a ticking coming from the back of the valve cover. When I started it the next day it only ticked for a few seconds when started. It now does this everytime I start it when cold. Suggestions?