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post #91 of 113 Old 02-08-2013, 11:40 PM Thread Starter
JCashen
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1990 YJ Wrangler 
 
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Oh can we wrap the diode in like electrical tape? Or leave it bare?

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post #92 of 113 Old 02-08-2013, 11:54 PM Thread Starter
JCashen
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The main reason I ask about the timing is that when looking at it with a timing light it will sit at 8btdc but seems like it jumps to around 0tdc randomly.
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post #93 of 113 Old 02-09-2013, 04:29 AM
Que89YJ
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You need to wrap the diode in tape to stop it from shorting out. It stops backfeed from the power. It had no effect on timing.
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post #94 of 113 Old 02-09-2013, 08:22 AM Thread Starter
JCashen
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Quote:
Originally Posted by Que89YJ View Post
You need to wrap the diode in tape to stop it from shorting out. It stops backfeed from the power. It had no effect on timing.
Sorry I didn't mean to make it seem like I thought the 2 were connected.

It is good to know I need to tape it.

And

Thank you four and que!
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post #95 of 113 Old 02-09-2013, 09:24 AM
fourbtgait
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If it is jumping around, say 0-8, it would be from surging of the engine.

Did you disconnect and plug the vacumm advance line when you timed it?

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post #96 of 113 Old 02-09-2013, 10:09 AM Thread Starter
JCashen
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Quote:
Originally Posted by fourbtgait View Post
If it is jumping around, say 0-8, it would be from surging of the engine.

Did you disconnect and plug the vacumm advance line when you timed it?

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Vacuum line was plugged. Should I be worried about it if I can drive it around? I lugged it in high gear up hill and low gear high rev. Couldn't hear any detonation and I can tell a difference in the way it drives now and did.

Edit: even with the diode I get run on after driving it. Though just turning it on and then off is fine. I wrapped it in tape. Would a 3a400v diode help?

Fourbtgait how is your jeep running with your 6a?
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post #97 of 113 Old 02-09-2013, 10:24 AM
Que89YJ
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With the advanced plugged and timing jumping around it sounds like the timing chain is stretched. You can drive it but you need to figure out why.
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post #98 of 113 Old 02-09-2013, 11:18 AM
fourbtgait
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I havent finished yet. Just now leaving junkyard. I found a 93 family bar to put in my cj.
Did you solder diode in correct orientation?
I have a part # at home for one recommended by jeephammer. I noticed it is larger.
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post #99 of 113 Old 02-09-2013, 11:20 AM
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When time surges, is the engine itself surging in rpm, not holding steady?
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post #100 of 113 Old 02-09-2013, 11:41 AM Thread Starter
JCashen
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Quote:
Originally Posted by fourbtgait View Post
When time surges, is the engine itself surging in rpm, not holding steady?
I don't have a working tach yet so I can't tell engine rpm. From ear it sounds like it the engine does surge.
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post #101 of 113 Old 02-09-2013, 12:01 PM
fourbtgait
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Quote:
Originally Posted by JCashen

I don't have a working tach yet so I can't tell engine rpm. From ear it sounds like it the engine does surge.
More than likely, if the engine rpm's are surging at idle, the emulsion tubes may be clogged a bit.
The carb is a carter bbd?
If so, google the bbd surging at idle. It is a common problem, easy fix.

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post #102 of 113 Old 02-09-2013, 12:04 PM
fourbtgait
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The diode that was recommended to me is a radio shack #276-1144

Did you install new plug wires? 8 or 8.5 mm?

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post #103 of 113 Old 02-09-2013, 12:16 PM Thread Starter
JCashen
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Quote:
Originally Posted by fourbtgait View Post
The diode that was recommended to me is a radio shack #276-1144

Did you install new plug wires? 8 or 8.5 mm?

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I had just installed new plug wires. They're 8mm motor craft ones jeep hammer had in his team rush post.
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post #104 of 113 Old 02-09-2013, 12:40 PM
fourbtgait
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Quote:
Originally Posted by JCashen

I had just installed new plug wires. They're 8mm motor craft ones jeep hammer had in his team rush post.
Ok good.
Soldering the diode sucks.

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post #105 of 113 Old 02-09-2013, 01:32 PM Thread Starter
JCashen
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Quote:
Originally Posted by fourbtgait View Post
Ok good.
Soldering the diode sucks.

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Yeah. I just picked up the bigger diode. Going to soulder it here shortly.

Although if it is running with key off and I yank the connect of the little red wire to the 12v it turns off. When I check the wire it only has power when key is on.

I might extend the wires into the cab and put them on a switch.
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