Help me solve this blasted Pinging.... - Page 53 - JeepForum.com

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post #781 of 844 Old 07-23-2013, 11:00 AM
86cj74.2L
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If you see fuel weep out the threads as your removing the plug its too high, tighten it back up and lower the float height. And try again.

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post #782 of 844 Old 07-23-2013, 11:58 AM Thread Starter
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Quote:
Originally Posted by John Strenk View Post
Funny how it hasn't changed much since then...
If it ain't broke, don't fix it......?

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post #783 of 844 Old 07-23-2013, 11:59 AM Thread Starter
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Yes it has to be running.
OK.

I'll do this while engine is warming up prior to leakdown test.
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post #784 of 844 Old 07-23-2013, 12:58 PM
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Quote:
Originally Posted by 2Xtreme

OK.

I'll do this while engine is warming up prior to leakdown test.
Think of nothing else. Check and set rear float also while engine is running.
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post #785 of 844 Old 07-23-2013, 06:20 PM Thread Starter
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Welp....
I guess the leakdown test was probably moot.
Unless this could be from the 'decorbinizing' treatment I did.....


Wheel, Fix, repeatů.
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post #786 of 844 Old 07-23-2013, 06:34 PM
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Please tell me that is NOT the first time you have removed the oil-fill cap........
That can also be from short trips, in that the engine doesn't get hot enough, for long enough, to 'cook' off the water from condensation that's inside the block.
Is the crankcase over filled now?
Have you run a pressure ck on the cooling system?
LG
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post #787 of 844 Old 07-23-2013, 06:56 PM Thread Starter
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Definitely NOT the first time! That's why I was floored...

And short trips would explain it...
I've only been driving a few blocks during this 'project' to test for knocking.

Haven't tested the cooling system pressure because the PO pushed it into the fan at some point and there is sum kind of bubble gum crap on there, i assume to plug some leaks...

Wheel, Fix, repeatů.
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post #788 of 844 Old 07-23-2013, 06:58 PM Thread Starter
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I must have screwed up the leakdown somehow.

Every cylinder showed 100% leakage, with air escaping in various areas.

So idk....

Wheel, Fix, repeatů.
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post #789 of 844 Old 07-23-2013, 08:20 PM
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That picture would be goop on the rad cap?


Forget it.
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post #790 of 844 Old 07-23-2013, 08:50 PM Thread Starter
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Quote:
Originally Posted by 86cj74.2L
That picture would be goop on the rad cap?

Forget it.
Oil fill cap

Wheel, Fix, repeatů.
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post #791 of 844 Old 07-23-2013, 08:55 PM
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Yea I figured it out then. I failed trying to delete it.
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post #792 of 844 Old 07-23-2013, 09:09 PM
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Quote:
Originally Posted by 2Xtreme View Post
I must have screwed up the leakdown somehow.

Every cylinder showed 100% leakage, with air escaping in various areas.

So idk....

Sure you were on the compression stroke?

With 170# of pressure it can't be leaking that bad...


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post #793 of 844 Old 07-23-2013, 09:21 PM Thread Starter
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Quote:
Originally Posted by John Strenk

Sure you were on the compression stroke?

With 170# of pressure it can't be leaking that bad...
This is exactly what I was thinking.....,

Wheel, Fix, repeatů.
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post #794 of 844 Old 07-23-2013, 09:26 PM Thread Starter
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I used my compression gauge (minus the needle valve) to find the compression stroke of #1 cylinder, then verified TDC with the 'screwdriver' method.

Then went along in firing order verifying TDC with the screwdriver as I went.

I just don't get it.....
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post #795 of 844 Old 07-24-2013, 07:07 AM Thread Starter
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Just for S&G’s, below is where I noted the air passing through the engine, per cylinder.
Maybe this indicates where I went wrong. Maybe not.

The one that really seems odd (to me anyway)is #2 leaking into #1 cylinder.

Cylinder/ Leakage Location

#1 Oil Fill
#2 #1 Cylinder
#3 Oil Fill
#4 Oil Fill AND Exhaust
#5 Intake (carburetor)
#6 Exhaust

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