4.0 tapping matching rpms - Page 2 - JeepForum.com

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post #16 of 25 Old 05-06-2012, 06:51 PM
ctak24
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1996 ZJ 
 
Join Date: Nov 2009
Location: Connecticut
Posts: 161
my cracked exhaust manifold sounded like a noisy lifter. replaced it and it went away

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post #17 of 25 Old 05-06-2012, 06:57 PM
MurdaJs
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1996 ZJ 
 
Join Date: Aug 2009
Location: Tustin
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turn it on and look for cracks or holes, paying extra attention to any rusty spots. Black carbon deposits are also a give away.
I changed my muffler, and had an exhaust leak afterwards. Turned out a flange didnt seat perfectly when I tightened the bolts and I found it because I could see the black carbon deposits. Its just a shart in the dark, but its cheaper and easier than gettin into the valve cover.

good luck!
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post #18 of 25 Old 05-06-2012, 06:59 PM
MurdaJs
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1996 ZJ 
 
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Location: Tustin
Posts: 3,294
I dont have a 4.0 but I guess the exhaust manifolds have a tendency to crack near the collector from other threads ive browsed
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post #19 of 25 Old 05-06-2012, 07:03 PM Thread Starter
sevenscrew
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1997 ZJ 
 
Join Date: Mar 2011
Location: Hopatcong
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well, i have to take cover off cus the gasket is leaking pretty bad whole way around, started soemtimes has to be hit or brake cleaned, because oil is dripping on it

1997 Limited 5.2L Nelly - SOLD
1997 Limited 5.2L - new project
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post #20 of 25 Old 02-19-2013, 07:19 PM
savannahzj
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Location: savannah
Posts: 191
Did you ever get to the bottom of this? I have developed a similar tap.
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post #21 of 25 Old 02-19-2013, 07:30 PM Thread Starter
sevenscrew
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1997 ZJ 
 
Join Date: Mar 2011
Location: Hopatcong
Posts: 2,774
Nope just gonna run it into the ground. It's not wirth more than scrap :/ it's leaking at every gasket

The valve cover, rear oil switch, oil filter adapter. Pan . Antifreeze, trans fluid from the output seal

So someone would have to pull the t case to fix it.

Plus the brakes barely want to stop it. Almost like no power brakes. It's hard to explain.

1997 Limited 5.2L Nelly - SOLD
1997 Limited 5.2L - new project
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post #22 of 25 Old 02-19-2013, 07:54 PM
savannahzj
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1998 ZJ 
 
Join Date: Apr 2011
Location: savannah
Posts: 191
I think I'm with ya... I've been driving 500 highway miles every weekend for a few months. Its been running great, getting 20 mpg. It leaks no fluids. This tap just started. It's not too loud, and hard to pinpoint. I've been reading about the tranny fluid, marvel, amsoil, flushes but I'm scared to cause other problems. I think I'll leave well enough alone.
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post #23 of 25 Old 02-19-2013, 07:55 PM Thread Starter
sevenscrew
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Join Date: Mar 2011
Location: Hopatcong
Posts: 2,774
Not my zj so I don't care lol it's my moms. She bought it without seeing it. -.-

Mines a dream to me !! Her tap starts out very loud then gets quieter

1997 Limited 5.2L Nelly - SOLD
1997 Limited 5.2L - new project
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post #24 of 25 Old 02-19-2013, 07:58 PM
savannahzj
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Join Date: Apr 2011
Location: savannah
Posts: 191
I hope your Mom's not a Jeep Forum member...
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post #25 of 25 Old 02-20-2013, 06:01 AM Thread Starter
sevenscrew
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1997 ZJ 
 
Join Date: Mar 2011
Location: Hopatcong
Posts: 2,774
No lmao actually wouldn't be surprised

1997 Limited 5.2L Nelly - SOLD
1997 Limited 5.2L - new project
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