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Post by Haines Garage on Sept 1, 2014 17:32:41 GMT -5
Sir Hawk,
Watched the video multiple times.
I hear the knock .
I don't think you have a rod or bearing issue. .
My understanding is with those type problems, noise gets louder with higher RPM .
I made some phone calls to my colleges , some answered some did not ...It is a Holliday .
In talking with one who answered. ..
I remembered that your engine is a GPW !
Chain drive!!
It was discussed about perhaps timing jumped.
Now I reach..
Check your timing, and listen to the timing cover area .
Odd about the fuel pump .
Keep talking ... It helps !!!
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Post by Deleted on Sept 1, 2014 17:35:02 GMT -5
Sounds to me like one of your valve clearances is too much. If you set them up for the magic nine method, grab each one that is to be set with your hand see if one has too much clearance. If the tappet has a round crater worn into it, the feeler gauge will ride on top at the craters edge and give a false clearance reading. Your hand raising it will tell you which one. If that doesn't find it, run it and pull one plug wire at a time and see if the noise goes away. If it does, you found a loose wrist pin or bad rod bearing. That noise to me is a loose valve clearance. It seemed to also get noisy or increased as you moved your camera near the side chest. Take a good look at the spring coil spacing. If one is broken, you'll see the coil spacing difference. I really want you to fix this and come to Mike's so I can meet you. John
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Post by Deleted on Sept 1, 2014 17:38:53 GMT -5
Haines, if his timing jumped a tooth, it most likely would not start. I have heard of the camshaft moving front to back in a go devil making a tapping noise! The shim behind the gear was worn. If it's chain drive, the cover has a pin rivited to it that holds the cam into the bore. My money is still in the side chest. Oilly
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Post by Haines Garage on Sept 1, 2014 17:39:51 GMT -5
If that doesn't find it, run it and pull one plug wire at a time and see if the noise goes away. If it does, you found a loose wrist pin or bad rod bearing.
Fantastic advice!
General, what are your thoughts on my timing idea?
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Post by Haines Garage on Sept 1, 2014 17:41:45 GMT -5
Haines, if his timing jumped a tooth, it most likely would not start. I have heard of the camshaft moving front to back in a go devil making a tapping noise! The shim behind the gear was worn. If it's chain drive, the cover has a pin rivited to it that holds the cam into the bore. My money is still in the side chest. Oilly On this you are right as well! How about this .... New fuel pump fs up a lobe on the cam? Keep talking... Where's The Hawk?!!! |
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Post by Haines Garage on Sept 1, 2014 17:44:50 GMT -5
Facts stand, he replaced the fuel pump , and adjusted the valves .
If I read the post right all was fine.....and then ...
Correct?
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Post by Deleted on Sept 1, 2014 17:45:49 GMT -5
More: I've lost rod bearings and it was fairly quiet until you began to rev the engine. The knock is pronounced upon acclerating. Quiet when you let off. Your noise is steady as heck. I've also had a knock in my 327 chevy that was similar. The sound was all over and I thought it was a main bearing. I used the stethascope and when I put it on the fuel pump body, it about broke my eardrum. The stupid spring was weak and let the drive rod from the cam to the pump do the knocking. New pump, no sound. You changed to the pump that was quiet before? Just trying to help here. John
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Post by Haines Garage on Sept 1, 2014 17:50:28 GMT -5
And you are!! Immensely !
That's my point..
I am by far an engine expert!
It bothers me when one of my Bros has any sort of problem.
We are a team...
Let's figure it out . Can't have Sir Tim jeep less for the FCT.
The world as I know it would end !!
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Post by Deleted on Sept 1, 2014 17:58:10 GMT -5
Haines, if Mike has any hats left, I'm getting one and sending it to you. I'll tear off some alpine fir and put it in the hat. Then you can close your eyes, smell and wallah your at 9000 feet in Colorado. A cool refreshing moment for you. Oil
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Post by Haines Garage on Sept 1, 2014 17:59:55 GMT -5
Haines, if Mike has any hats left, I'm getting one and sending it to you. I'll tear off some alpine fir and put it in the hat. Then you can close your eyes, smell and wallah your at 9000 feet in Colorado. A cool refreshing moment for you. Oil Very nice.. And have all the KJRT sign it ! |
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Post by Deleted on Sept 1, 2014 18:00:17 GMT -5
Tim said, "So what do you think?"
Well, I don't think it's the fuel pump. Kidding aside, I know you've already established that. How about something on top of a piston? Like Rudy said, it's fast, like every revolution, not every other one, like on a power stroke or anything valve related. If you short out or disconnect plug wires, one at a time, does anything change? You've had all the bearings out and they're OK, I guess it's time to pull the head and have a look.
There's still time, Tim. We can build you another engine if we have to. Let me know if there's anything I can do. I've got lots of spare parts. BW
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Post by Deleted on Sept 1, 2014 18:03:01 GMT -5
Bruce, welcome to the party pal! Wish I was closer. I'd come and play Jeep. LOL John
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Post by Haines Garage on Sept 1, 2014 18:04:45 GMT -5
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Post by Deleted on Sept 1, 2014 18:19:05 GMT -5
Reaching a little, but I recently read where one Jeep owner had a knock or rattle, and the tab on the oil float assembly that stops the up swing was bent, and the float went up too high and a rod was hitting it. That's a new one to me. I'll check that on my next two go devils. Oil
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Post by Deleted on Sept 1, 2014 18:28:00 GMT -5
Haines, if Mike has any hats left, I'm getting one and sending it to you. I'll tear off some alpine fir and put it in the hat. Then you can close your eyes, smell and wallah your at 9000 feet in Colorado. A cool refreshing moment for you. Oil Very nice.. And have all the KJRT sign it ! I have a special, um, shall we say, a "treatment" for it. BW |
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Post by Deleted on Sept 1, 2014 18:45:25 GMT -5
May sound stupid but take the fanbelt off and run it. Lee  |
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Post by athawk11 on Sept 1, 2014 18:50:12 GMT -5
Adjusted valves back to .14. I'd almost say it sounds worse. I pulled the spark plug cables one at a time while running. I can't hear any difference... Other than the stumble you would expect to hear. I just can't seem to isolate the noise. I hear the knock no matter where I put my "hearing rod". On top...around the valves on 2 and 3, the noise has a higher pitch.
What causes a knock on top? Again, I don't know that it's on top, but I've looked at all the stuff underneath...except the wrist pins. I'll be checking them tomorrow.
I don't understand . I was just driving along, then all the sudden...knock, knock., knock...like something broke.
When I adjusted the valves, could I have caused some kind of pre-ignition?
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Post by Haines Garage on Sept 1, 2014 18:52:47 GMT -5
May sound stupid but take the fanbelt off and run it. Lee Why...? Please share . |
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Post by Haines Garage on Sept 1, 2014 18:55:19 GMT -5
Facts stand, he replaced the fuel pump , and adjusted the valves . If I read the post right all was fine.....and then ... Correct? This is what I was getting at...wrist pins ! If your valves where not adjusted correctly. , and the pump was bad... Why good ..... Then ... |
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Post by athawk11 on Sept 1, 2014 18:57:33 GMT -5
Ran out...pulled fan belt. No change. Keep it coming.
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Post by Deleted on Sept 1, 2014 19:11:21 GMT -5
1) It will be less distracting, no wind and no fan/belt noise. I do it at work all the time  2) Because I said so  . Lee |
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Post by athawk11 on Sept 1, 2014 19:14:47 GMT -5
I did pull it. No change. I'm floundering here.
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Post by Deleted on Sept 1, 2014 19:15:47 GMT -5
Try turning it over by hand, maybe remove the plugs so it turns easy. See if there is anything you may feel or hear. Lee |
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Post by athawk11 on Sept 1, 2014 19:18:18 GMT -5
Will do...I'll be back...
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Post by Haines Garage on Sept 1, 2014 19:21:40 GMT -5
[/quote] I have a special, um, shall we say, a "treatment" for it. BW[/quote] I still have this in the garage, that you "treated" last year! That's real Colorado mud my friends!  Intermission entertainment whist Hawkridge is giving his motor a hand job !!! Great idea Captain!! |
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