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  #26  
Old 05-01-2018, 01:23 PM
robertf robertf is online now
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Does pertronix use the same rotor as lucas?
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  #27  
Old 05-01-2018, 01:34 PM
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Not sure, but I have a spare new Lucas rotor in my parts bin.
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  #28  
Old 05-01-2018, 01:41 PM
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Quote:
Originally Posted by Tugela View Post
Not sure, but I have a spare new Lucas rotor in my parts bin.
Is this the old style or the new style? If it is new, I have had 3 of these fail due to earth ground fault through the rotor.
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  #29  
Old 05-02-2018, 11:18 AM
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The only other thing I can think of is maybe your speed transducer (VSS) is not working properly. WSM does not show a way of testing it though.
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  #30  
Old 05-02-2018, 12:10 PM
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Quote:
Originally Posted by kk88rrc View Post
The only other thing I can think of is maybe your speed transducer (VSS) is not working properly. WSM does not show a way of testing it though.
I found a good deal on a Lucas ignition amplifier and it's on the way. If that doesn't clear up the issue I'll look at the VSS. Thanks for the suggestion. Coincidentally I have one of those in my parts bin, too.
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  #31  
Old 05-02-2018, 11:18 PM
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is your ign amp mounted on the distributor ?, or on the coil bracket ?
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  #32  
Old 05-03-2018, 08:19 AM
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Quote:
I found a good deal on a Lucas ignition amplifier
May I ask where as would like having a spare one of these.

Thanks!
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  #33  
Old 05-03-2018, 08:22 AM
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Quote:
I have had 3 of these fail due to earth ground fault through the rotor.
what did you do to resolve this?

Thanks!
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  #34  
Old 05-03-2018, 09:12 AM
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May I ask where as would like having a spare one of these.

Thanks!
Atlantic British was selling them for $37 through their ebay store. Same part number as the one on their website which was nearly double the price. Maybe I should get another.
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  #35  
Old 05-22-2018, 05:48 PM
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Quote:
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what did you do to resolve this?

Thanks!
Surprisingly I was able to find a TRUE Original OEM LUCAS rotor. Beefy as can be and all edges are rounded.

I still have a back up from the JY that is my emergency. Funny thing is I have the failed 4th unit on my desk as a reminder.
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  #36  
Old 05-22-2018, 05:54 PM
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Atlantic British was selling them for $37 through their ebay store. Same part number as the one on their website which was nearly double the price. Maybe I should get another.
I've had two fail from AB. They warranted' both of them but that doesn't help when I'm on the road.
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  #37  
Old 06-09-2018, 06:56 PM
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Update: finally got around to replacing the ignition amplifier module. Result? No improvement. My patience is wearing thin and I'm tempted to resort to professional help.
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  #38  
Old 06-09-2018, 07:39 PM
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maybe check the TPS resistance for a smooth transition from open to close? If theres a problem with it when you let off the throttle maybe the ECU is interpreting it as a rapid pedal mash and dumping extra fuel just as the throttle is closing.
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  #39  
Old 06-09-2018, 08:14 PM
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I've been considering throttle issues, however after replacing the ignition amplifier module now the stumble has gotten worse and the engine struggled on my brief test drive at 15 mph with a steady throttle. In an earlier experiment I turned the throttle cable tensioner a few rotations and that improved things, but that seems like a superficial solution.


I will say that after today's session mucking about with the distributor and getting the re-installation wrong the first time, I am more familiar with the subtle dance of TDC, timing, and finessing the distributor back into position. So it was valuable as a learning experience even if the outcome was not what I wante.
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  #40  
Old 06-12-2018, 12:53 PM
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Time to check the VSS.
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  #41  
Old 06-12-2018, 01:07 PM
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Thank you, sir - happily I have a spare in my parts bin.
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  #42  
Old 06-16-2018, 01:01 AM
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Quote:
Originally Posted by kk88rrc View Post
Time to check the VSS.

Replaced the VSS. No change. Cleaned IACV. It had some carbon buildup. No change. No signs of vacuum leaks.



I must have messed up the timing somehow. It still idles okay, but under throttle is when it stumbles and bucks and has no power. I'm almost done eliminating possibilities.
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