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Old 08-18-2014, 09:43 PM   #1
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Bet you havent heard this carb issue before!! please help!!

Back again with yet ANOTHER problem!! >.<
Thats Jeep life I guess lol. Anyway!
I couldnt get the jeep to idle without my foot on the gas. new gas filter, seafoamed it, and finally did the venutri system clean. after I did the system clean it instantly sounded a lot better and was way more responsive. but still no idle. I thought maybe driving it around a bit would help clean out whatever left over gunk was still in it. I got about 100 yards before I heard a morse code sounding clanking coming from the engine compartment. Thinking I had just dropped a socket I kept driving but was very aware of the sound. I ended up pulling over after another couple hundred yards when the sound continued. out of nowhere, the morse code/speratic sound turned into a constant loud banging sound.
bop...bop bop.....bop.....bop bop bop....bop then to BOP BOP BOP BOP BOP BOP.
the speed went along with the RPM's. when shifting it slowed.

I have the carter 8384 carb and have noticed im missing the small check valve bearing suppose to be under the venutri system.
Ive since taken the carb off and was in the process of taking off the intake manifold. ( a friend told me the bearing may have been caught in the valves.
Out of curiosity, I took out all of the spark plugs. the day before i had cleaned and re-gapped them. to my surprise the #6, nearest the firewall, spark plug was destroyed. I had bosch platinum 2 and both flanges where banged up and closed so bad it broke the center ceramic part.
What I cant figure out is if its the ball bearing doing all the damage, if theres another serious issue that just happened to happen RIGHT after the carb cleaning.
Ive tried everything to get it out.
**I couldnt get the manifold off because none of my sockets would fit to take off the bottom bolts.
would taking the valve cover off show anything that would help?
Seriously ANYTHING helps!!

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Old 08-18-2014, 09:52 PM   #2
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So there are a couple of options, the metal you sucked in is still in the engine and causing the noise, or Option 2, you broke something in the valve train with this piece of the carb and that is the new cause of the new noise.

If it were me, I would fish a flexible magnet in there and see what I can get out, follow that with a couple blasts of compressed air. After that do a compression check on all 6 cylinders. If you have lost compression on the #6 cylinder, it is time to pull the valve cover and see if you broke a spring or rocker. If you still have the noise, and can't find anything with either of these steps, it will be time to pull the cylinder head.

Good luck!

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Old 08-18-2014, 10:05 PM   #3
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didnt even think to check the pressure!! thanks so much, ill go do that and check the rockers now. tried the magnet and compressed air though
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Old 08-18-2014, 10:08 PM   #4
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Sounds like you need to pull the cylinder head off.
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1989 Base YJ, 4.2l, Borla exhaust, offy intake, Motorcraft 2150 carb, CRT HEI ignition, ax15, np231 JB conversions SYE, D30 ARB & Ford 8.8 ARB 4.56, 35x12.5r15 Goodyear MTR's, bds 3.5" springs, 1" body lift, and 1/2" Boom Shackles.
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Old 08-19-2014, 07:18 PM   #5
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The dark hole....

If you need to see in those tight spots there are small endoscopes (bore scope) available that use the usb port on the laptop. I found one (from China) for $8.95 on a 6' cable and it comes in handy for occasions like these. I believe it would be less work.
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Old 08-19-2014, 10:57 PM   #6
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Quote:
Originally Posted by c5wagner View Post
Sounds like you need to pull the cylinder head off.
X2
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Old 08-19-2014, 11:09 PM   #7
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No, not that same one but in 1972 an old Uncle of mine called me one afternoon and said he had dropped the wing nut from the air cleaner, he could not find it till he started his engine and it was knocking. I went over and pulled the Head [223 Ford I6] and there it was, stuck in the Top of a piston, it did bend the intake valve while passing it. A valve job and a little to get it out of the piston, some torch work on piston and it ran till it sold 4 years later, after his Death. Good Luck!
That was the same uncle that owned the Last Willies Dealership in B.R. La. when Willies sold out to ? was it Rambler or Nash?

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