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Unread 05-21-2013, 12:28 PM   #211
86cj74.2L
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Saying its running better then ever.........how's your pinging doing, since you seem to only have put vacuum advance on manifold?

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Unread 05-21-2013, 12:38 PM   #212
2Xtreme
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Quote:
Originally Posted by 86cj74.2L View Post
Saying its running better then ever.........how's your pinging doing, since you seem to only have put vacuum advance on manifold?
After doing just the vac change and Cap/ Rotor/ Plugs (oem)/ Wires, there may have been a slight pinging, but if there was I couldn't hear it over the exhaust.

I drove it pretty hard - well, as hard as I dare with no brake lights.... AGAIN! lol.

Definitely more power and running closer to what I am used to from this thing.
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Unread 05-21-2013, 04:04 PM   #213
86cj74.2L
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I would speculate the tuneup solved most of your detonation. Crossfire from a dead cap and rotor.
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Unread 05-21-2013, 06:11 PM   #214
Matt1981CJ7
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Quote:
Originally Posted by 86cj74.2L View Post
I would speculate the tuneup solved most of your detonation. Crossfire from a dead cap and rotor.
Yep.

Now let's get that thing screaming like a hyena.

Looking forward to the advance curve.

Matt
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Unread 05-21-2013, 06:18 PM   #215
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Quote:
Originally Posted by 86cj74.2L View Post
I would speculate the tuneup solved most of your detonation. Crossfire from a dead cap and rotor.
Probably.

But I could have sworn I did one when I bought it, not too many miles ago.

Wither way, I'm happy with the progress to date and thankful for Jeepforum members!
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Unread 05-21-2013, 06:19 PM   #216
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Quote:
Originally Posted by Matt1981CJ7 View Post
Yep.

Now let's get that thing screaming like a hyena.

Looking forward to the advance curve.

Matt
Tomorrow night is devoted to garage time....
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Unread 05-22-2013, 09:14 PM   #217
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Welp, didn't get a lot accomplished tonight.
Everything seemed to be working against me.

Found it difficult to be on both sides of the engine at the same time and the damn fan seemed to always be in the way....

Do I need to remove the fan in order to be able to work around this thing?
It seemed to always catch my ratchet as I spun the dampener, not to mention make it difficult to see what I was doing....

As an aside... when I pulled the plugs to start this procedure, this is what I found (hope you can see the differences in plugs). This is after a less than 3 mile test drive after the tune up/ vac change:



Was hoping to have some numbers to report to you guys....
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Unread 05-22-2013, 09:23 PM   #218
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Those are new plugs with only three miles on them?


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Unread 05-22-2013, 09:48 PM   #219
John Strenk
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Wow. Two normal, 3 fouled one shorted.

How did that happen in 3 miles?

Sent from my iPhone using JeepForum
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Unread 05-22-2013, 10:40 PM   #220
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What made you pull your plugs after only 3 miles?
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Unread 05-22-2013, 11:29 PM   #221
86cj74.2L
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Quote:
Originally Posted by Skerr
What made you pull your plugs after only 3 miles?
Possibly to help turn it over by hand for the timing check.

Do you use or burn oil?

Does your oil on the dipstick smell like gas?
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Unread 05-23-2013, 12:08 AM   #222
dg6772
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I recently had this problem with a 5.7 Chevy. Upon a full inspection I determined a bad head gasket between #3 and # 5 cylinders.

Not saying this is your problem but all you've been through is what I went through.

Dave in Muskegon
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Unread 05-23-2013, 03:43 AM   #223
John Strenk
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Hmmm Maybe that's why he was running a hotter plug....
Quote:
Here are photos of the plugs I took out (in order, front is to the left):



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Unread 05-23-2013, 05:46 AM   #224
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Yes, those are new plugs w less than 3 miles on them.... ugh
I pulled them for ease of spinning the motor by hand.

John, if you are referring to the plug on the far left being shorted, as in the electrode touching, its not. Just a bad angle for the picture.
(Definitely not as good as some of you guys at taking pics...lol)
The plugs I took out at the beginning of all this (the red ones) are the stock number (985's)

I don't think it burns oil (haven't had a lot of seat time after RMS replacement, so tough to say) and I've never noticed the smell of gas at the dipstick.

So, setting THIS plug issue aside for the moment (we can come back to it), do I have to (or should I) remove the fan for the whole TDC procedure? Going to try to wrap that up tonight.

Thanks again,

2X
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Unread 05-23-2013, 06:18 AM   #225
John Strenk
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It's up to you,
I just crank on the crank from under the jeep to keep from hitting the fan. But my fenders have big cutaways. that I can still see the balancer.
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