CRAP CRAP CRAP!!! again with the knocking!!!

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citRon

NAXJA Forum User

Location

loohaville kentuck

• Jan 10, 2007

• #1

http://www.naxja.org/forum/showthread.php?t=104405&highlight=noise
-changed rear main, and oil pump.
Started it up last night, sounded fine, except for when it was shut off, there was a 'shudder' and for a split second, made the 'knock-rattle' sound, didn't hear it while it was running though. Today, had it running while I tightended up shock and sway bar bolts, and after it got warmed up, maybe 5 minutes....'knocky knock knock!!
%^^&#*(@! _(*&&^%$@!##@$!&&%$&^&@@!!!!!!!!!!!!!!
what in the -----is this????? When I had everything apart, everything seemed ok, crank look good, bearing for the rear main looked good, -didn't take off any other bearing caps- didn't think I needed to look at any more bearings...

 

Last edited: Jan 10, 2007

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MJmk

NAXJA Forum User

Location

Olympic Penninsula

• Jan 10, 2007

• #2

Balancer coming apart & starting to rub the timing cover???

 

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dizzymac

NAXJA Forum User

Location

New Hampshire

• Jan 11, 2007

• #3

You checked the bolts on the flexplate but did you check for cracks?

 

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citRon

NAXJA Forum User

Location

loohaville kentuck

• Jan 11, 2007

• #4

didn't see any cracks...doesn't sound like it's coming from far enough forward to be the timing cover

 

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dizzymac

NAXJA Forum User

Location

New Hampshire

• Jan 11, 2007

• #5

I had one that you could not see the cracks until you pryed on the plate(carefully).

 

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lawsoncl

NAXJA Forum User

Location

North Idaho

• Jan 11, 2007

• #6

I had a bad alternator once that sounded just like a bad rod knock. I was pleasantly surprised to have the noise disappear when I pulled the belt. The rear bearing was totally destroyed and the shaft was knocking around.

 

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citRon

NAXJA Forum User

Location

loohaville kentuck

• Jan 11, 2007

• #7

lawsoncl said:

I had a bad alternator once that sounded just like a bad rod knock. I was pleasantly surprised to have the noise disappear when I pulled the belt. The rear bearing was totally destroyed and the shaft was knocking around.

Click to expand...

I tried taking off the belt early on- sound was still there. Also tried the 'pull a plug one at a time' trick- no change- still there.

I'll take a real close look at the flywheel tomorrow- it just sounds farther forward- I know the sound can travel though.

 

macgyvr

NAXJA Member #120

NAXJA Member

Location

NE Indiana

• Jan 11, 2007

• #8

citRon said:

I tried taking off the belt early on- sound was still there. Also tried the 'pull a plug one at a time' trick- no change- still there.

I'll take a real close look at the flywheel tomorrow- it just sounds farther forward- I know the sound can travel though.

Click to expand...

my flywheel cracked in the area right around the flywheel bolts. right around the outside edge of the bolt circle...sounded just like a rod knock. i couldn't find it by moving the flywheel...only found mine when i pulled the motor...

mac 'a lot of work for a crack' gyvr

 

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bwh0069

NAXJA Forum User

Location

N.C.

• Jan 11, 2007

• #9

Check the purge solenoid on the right side firewall.Mine was making a knocking noise that was scary.

 

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bwh0069

NAXJA Forum User

Location

N.C.

• Jan 12, 2007

• #10

It is called a duty cycle purge solenoid.I understand that several people have spent great sums of time and money to stop a knock.My replacement cost was $34.00.I now have a perfectly quiet 2000 XJ.

 

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citRon

NAXJA Forum User

Location

loohaville kentuck

• Jan 12, 2007

• #11

hmmmm.....where is that located? ...firewall, I assume, but where? Thanks, haven't had time to do anything with it today, hopefully saturday, and hopefully I'll have an idea of what to do.