Top end noise

lancec2c30

Member

May 14, 2008

570

0

16

Washington

Oct 11, 2010

#1

• Oct 11, 2010

• #1

I put new head gaskets on my car because of a failure about a month back. Shortly after, I noticed a tap in the top end. I assumed it was a rocker or push rod problem.
But none of the rockers were slacked, and all the push-rods were straight.
So my next guess would be a faulty lifter, but don't they "collapse" and leave slop in the rocker?

So, in a nut-shell, what are the tips to a faulty lifter?

 

L

Lawbreaker5.0

Member

Feb 20, 2009

543

2

18

Texas

Oct 11, 2010

#2

• Oct 11, 2010

• #2

^^^^I would like to know the same thing.

 

lancec2c30

Member

May 14, 2008

570

0

16

Washington

Oct 12, 2010

#3

• Oct 12, 2010

• #3

So no ones had a lifter go bad before?

 

281pony

Active Member

Aug 31, 2003

2,681

2

46

Oly, WA

Oct 12, 2010

#4

• Oct 12, 2010

• #4

try usin a stethoscope to listen where the noise is coming from.

 

C

corey5988

New Member

Mar 21, 2008

49

0

0

Oct 12, 2010

#5

• Oct 12, 2010

• #5

Header gaskets. Sounds just like topend noise. That was my problem. Had my valve covers off twice before checking them.

 

Cobra912

Active Member

May 1, 2005

1,777

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39

Wish I was anywhere but here

Oct 12, 2010

#6

• Oct 12, 2010

• #6

if it's tap tap tap tap I would say it's probably a lifter. stock ones? better get it replaced before you do anything else, because yeah it could lead to some serious problems.

 

Rick 91GT

Mustang Master

Nov 29, 1999

9,692

95

99

PA

Oct 13, 2010

#7

• Oct 13, 2010

• #7

They can become weak and still pump up, stock lifter failure is hard to diagnose, but if your sure the rockers, pushrod and adjustment is good and you still have a top end tap that goes up with rpm.....it most likely is the lifters. Stock Ford Racing replacements are under $130

 

P

phutch11

Member

Nov 14, 2005

328

2

18

Oct 14, 2010

#8

• Oct 14, 2010

• #8

+1 on the header gasket leak. They can be surprisingly loud and surprisingly hard to locate.

If you've got a manual car, turn the car off while rolling down the road in gear. If the noise goes away, it's a header gasket leak - if not, you've got other problems.

Good luck....

 

Cobra1741

Member

Mar 9, 2010

152

1

16

Oct 14, 2010

#9

• Oct 14, 2010

• #9

did you overheat the car when the head gasket went bad???