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Triumph TR6 - Coil Issue

OK boys and girls this was a good day in the life of my transplant with the exception of one minor issue I installed a battery and turned the key and WOW the motor turned over weak (bad battery)but no start up. I checked the pertol at the carbs and plenty of that so I went on to the spark, I found there to be NO spark at the coil it is a newer sport coil and I have another stock one as a extra but First I want to know that I have all the proper wires attached to the proper sides of the coil. There is an Allison electronic ignit. installed by PO. someone please look at there coil and tell me what color wires are on what side. There is a cut wire down in the ignit. harness that is White with Brown stripe is this a ignition wire or one that was not needed when the electronics was installed. there is a very chewed up solid white wire that appears to be in tact but I'm very suspesious of a break in the continuity of this wire and will probably replace it for piece of mind but I need to know that all the wires are in the correct place before I start cutting and replacing thanks
J.
Jeremiah Randolph

Jeremiah,
I too have an old Allison EI from PO installation. I just looked at the wiring. The black wire from the control box goes to the (-) terminal of coil. The red wire from control box goes to the (+) terminal of coil. From the wiring harness there should be a solid white wire (no brown stripe) that also connects to the (+) terminal of the coil. This would be the chewed up wire you are talking about.

The white wire with brown stripe from harness goes to the oil pressure switch on the engine block just underneath the dizzy.

I have heard if you leave the key ingition ON (red light on dash ON) while motor not running with the older Allison units you "may" burn up the control box. I do not know the exact cause or if this is hearsay or not, but I try not to leave the key ON when diagnosing issues just in case.

Good luck! Cheers! MRankin
MRankin

The Temp transmitter wire on my car is solid GREEN coming out of the same harness if the white with green is the temp wire where is the solid green go?
Jeremiah Randolph

I miss read your post it read OIL transmitter not Temp sorry. I have a copper oil line coming from that port so I see why the wire was clipped now In double checking the wiring just now I noticed I have one extra all white wire attached to the + side and it travels back to the fire wall and go's in to a harness just under the fuse block and two relays mounted on the firewall I think this wire may have something to do with the Overdrive but I'm not sure any ideas? I'm still getting low spark at the coil with no ignition so I will change out the coil next and see if this helps Thanks...........
Jeremiah Randolph

Jeremiah- Do you have a copy of Dan Masters wiring guide for your year car?. If you don not, here is the link.
http://www.advanceautowire.com/indexb.htm

Don
DON KELLY

I switched out the coil today and nothing... so I'm left thinking that it must be the Allison electronic ignition it self everything looks clean, all the wires are in tact no rusty ends just NO spark at the coil now before I go and drop $$$.$$ on a new EFI is there any tests that will defenitivly tell me that it is this little black box that is giving me all this sh*t if so then should I go shopping for say a Mallory or some other system from Jegs. I have a very "OLD" Illuminition system from a junker Spitfire I have will this work as a temp. system Thanks
Jeremiah Randolph

Jeremiah,
Have you looked under the distributer cap? Goofy question, but your Allison disc or sender may be bad.
Allison (pre-Crane) was an optical pick up, I think. Also check the fit of the rotor. The notch may have cracked and the rotor is free-wheeling.
Good luck,
Steve
Steve Crosby

Jeremiah,
Check your email. I just sent you the Crane XR700 manual in pdf just in case you do not have one. I also sent you a post talking about correctly phasing the optics of the Crane inside the dizzy to the dizzy cap and rotor. At least this will provide you with more info. It is all a learning game. Cheers!
MRankin
MRankin

The e-mail listed is not correct Please re-send to kcmgb@sbcglobal.net thank you for the help!
Jeremiah Randolph

I tried again. Hope you get them this time. Cheers!
MRankin
MRankin

Get volt meter. With ignition on and Red meter lead to + of coil and black lead to chasis ground you should have about 12volts. If you don't have about 12v you won't have spark. Also check while cranking, could have a bad ignition switch. I've had one of these systems for 20 years and has been on 3 TR6s and a 68 Chevy van!
skikir

This thread was discussed between 22/09/2005 and 03/10/2005

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