loud TICK from passenger valve covers

Jaswir

Member

Mar 31, 2005

578

0

18

Orlando, FL

Jul 18, 2006

#1

• Jul 18, 2006

• #1

Im sure its my rockers on passenger side all the way in the back!

i have stock rockers... how hard is it to adjust them? what do i torque them too???

This TICK IS LOUD!! under load 2,000 rpms and up it goes away... and seems like i drive it awhile it almost stops or its not as loud at idle (but a slight tick)... kinda hard to tell because i can't hear it with my exhaust

i have good oil pressure and oil level is right...


any help please!

 

1987stangman

Member

Jul 12, 2006

684

24

19

Jul 18, 2006

#2

• Jul 18, 2006

• #2

I had that tick in the EXACT same spot on my 87' GT and when I installed the roller rockers it went away. The car had 132k on it then, now has 138k.

 

Jaswir

Member

Mar 31, 2005

578

0

18

Orlando, FL

Jul 18, 2006

#3

• Jul 18, 2006

• #3

so u had the loud tick on stock rockers and when you installed your new ones it went away??

anyone know what to toq them to???

 

bob331T76

New Member

Aug 28, 2005

76

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0

so cal

Jul 18, 2006

#4

• Jul 18, 2006

• #4

Just pop off the vavle cover and see whats loose first, i did mine and just made it tight as hell!!! worked

 

T

txn4077

New Member

Jul 18, 2006

1

0

0

Duson, Louisiana

Jul 18, 2006

#5

• Jul 18, 2006

• #5

Possible Lifter issue

In my experience, I would believe that your tick was a lifter going out. On a stock 302HO your lifters keep the rockers on your valves. You cannot adjust your rockers. When a lifter goes out, it will relieve more oil than normal causing it to not fully expand on each engine cycle. This will create slack between your rocker and Valve which will create a "tick" or "tap". Your description of your problems makes me think it is a lifter even more. The higher the rpm the higher the oil pressure to the lifter, the lower rpm then lower oil pressure. Good luck

 

Jaswir

Member

Mar 31, 2005

578

0

18

Orlando, FL

Jul 18, 2006

#6

• Jul 18, 2006

• #6

i just poped it off and checked them all... there i all tight or at 25lbs what i just torqued them too

? is can i start my car with the cover off? or is oil going to fly everywhere? see if that helped the tick?

if its my lifer how do i change them? is that the rod that pushes the rocker up and down?

 

Jaswir

Member

Mar 31, 2005

578

0

18

Orlando, FL

Jul 19, 2006

#7

• Jul 19, 2006

• #7

ok guys i just tried tightem down and i still get a tick...

so i guess it might be the lifters.... ? is what is the lifter? that what the spring covers? how do i install lifters??

ANYONE ???

 

bob331T76

New Member

Aug 28, 2005

76

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0

so cal

Jul 19, 2006

#8

• Jul 19, 2006

• #8

id have to say you might want to get someone that is more Mechanically incline to help you. It isnt that hard but you might make things worse.

 

M

Marlboro_Man

Member

Sep 30, 2005

437

1

18

Houston, TX

Jul 19, 2006

#9

• Jul 19, 2006

• #9

bob331T76 said:

id have to say you might want to get someone that is more Mechanically incline to help you. It isnt that hard but you might make things worse.

Click to expand...

What he said.

But FWIW the "lifter" is what moves the "pushrod" , the "pushrod" moves the rockers.

 

Jaswir

Member

Mar 31, 2005

578

0

18

Orlando, FL

Jul 19, 2006

#10

• Jul 19, 2006

• #10

i would think that myself is pretty Mechanically incline... just i have never done anytype of internal motor work... im learning im sure i can do this job.... i have done everything else on this car... and i don't want to spend 100's of dollars to someone which i can do myself!


so does anyone have some install tips? do i have to take off my lower intake to do this???

 

pb_paulie_b

Founding Member

May 19, 2001

894

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0

Chaptico, Maryland

Jul 19, 2006

#11

• Jul 19, 2006

• #11

You can start your car with the v/c off. It wont be too much of a mess. A 'tick' could be so many different things that's why you should seek help. I'm sure you could fix it but you might need a mechanic to tell you whats wrong. Whatever you do, don't ignore it! Could possibly be a stretched rod causing the piston to slightly contact a valve like a 5.0 I 'USED" to have before a catastrophic failure (broke valve stuck in piston )

 

Bolt on 5.0

Founding Member

Jun 26, 2002

302

0

17

Suffolk, NY

Jul 19, 2006

#12

• Jul 19, 2006

• #12

get a haynes manual if you want to do the lifters yourself. Itll have step by step and have the torque specs for like $15.

 

JChalfan

Member

Nov 27, 2002

551

0

16

Bellevue, WA

Jul 19, 2006

#13

• Jul 19, 2006

• #13

Jaswir,

The lifter is the piece that rides on the camshaft lobe, the pushrod rides on the lifter, and the rocker clamps down on the pushrod.

Yes, you do have to remove the lower intake to get to the lifters.

You can start the engine with the valve cover off, but some oil will splash around. Shouldn't be too much, but expect some. That might help you locate exactly which lifter it is, if a lifter is the problem.

If you have a buddy who's used to working on V8's, or even better 5.0's, see if you can talk them into helping you. I'm sure you can do it, but having someone with more knowledge around always helps.

Good luck!

Jeff

 

Killer50stang

New Member

May 11, 2004

632

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0

Jul 19, 2006

#14

• Jul 19, 2006

• #14

Sounds like a rocker, I personally wouldn't keep driving it and hope it goes away. It's not hard to pull the cover and see what's going on.

 

carbed87

Member

Jun 5, 2005

215

0

16

Jul 19, 2006

#15

• Jul 19, 2006

• #15

see if putting a heavier oil in it works. you could do that, or try an additive too. i'd go with that before tearing into the valvetrain.

 

68keyblr

20+ Year Stangneter

Mar 17, 2003

946

20

49

Arizona

Jul 19, 2006

#16

• Jul 19, 2006

• #16

Before you do anything serious make sure the header bolts are nice and tight. Had a similar problem that drove me crazy only to find out it was an exhaust leak.

 

Jaswir

Member

Mar 31, 2005

578

0

18

Orlando, FL

Jul 19, 2006

#17

• Jul 19, 2006

• #17

ok this is what i have done...

try adding heavy oil (10w 40) instead of 10w 30 like i normally run

pulled off vavle covers... checked everything out and everything is tight and torqued down to specs!

this tick is LOUD and im sure it might be the lifters im not driving the car now,,,,

 

Jaswir

Member

Mar 31, 2005

578

0

18

Orlando, FL

Jul 20, 2006

#18

• Jul 20, 2006

• #18

i know its not my headers... it loud and i can tell where its coming from... i guess i will take it to someone to look at... so i know what to fix.... just to make sure... i don't want to do all that work and it end up not being the lifters...



should i take off the rockers in the back and look at the rods???

 

Killer50stang

New Member

May 11, 2004

632

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0

Jul 20, 2006

#19

• Jul 20, 2006

• #19

Jaswir said:

i know its not my headers... it loud and i can tell where its coming from... i guess i will take it to someone to look at... so i know what to fix.... just to make sure... i don't want to do all that work and it end up not being the lifters...



should i take off the rockers in the back and look at the rods???

Click to expand...

Does the tick sound like a miss or metal hitting metal? You're timing could be off or maybe even something else simple.

 

Jaswir

Member

Mar 31, 2005

578

0

18

Orlando, FL

Jul 21, 2006

#20

• Jul 21, 2006

• #20

only way to describe it is its like someone clapping... metal on metal i guess??? but its pretty loud and then goes away while driving almost???


i dunno