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 Electronic ignition

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Andy

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Location : Margate
Cars : 1953 Rover 75, 1974 Rover 3500s, 1998 Honda CB750
Posts : 328

PostSubject: Electronic ignition   Mon Sep 30, 2013 5:19 am

The P6 has developed an irregular misfire, mostly when accelerating up to about 2000 rpm. Seems OK after that.

So far only checked the obvious - ignition leads secure and distributor cap/rotor arm seem OK. Were it the P4 I would be looking at the points next, but the P6 has electronic ignition, about which I know B all. I have always understood that EI either works or it doesn't, with nothing in between. Is that correct, or is there something more I should be looking at,
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Hatch DLM

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Location : Tiptree
Cars : DLM 1 & my daily DLM 1
Posts : 1264
Occupation : Retired HGV 1 driver, Now full time layabout

PostSubject: Re: Electronic ignition   Mon Sep 30, 2013 8:33 am

Have you checked the plugs yet, I fitted a new set a while back and started to get the same symptoms, I found one of the plugs had a cracked insulator inside the metal body, I only noticed it when cleaning said plug and the insulator rotated a little.
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Andy

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Location : Margate
Cars : 1953 Rover 75, 1974 Rover 3500s, 1998 Honda CB750
Posts : 328

PostSubject: Re: Electronic ignition   Tue Oct 01, 2013 6:27 am

Will be looking at the plugs, though I would be surprised if that is the problem as it does not feel as though any one cylinder is playing up and unlikely that more than one would have failed at the same time after 4,000 miles. Coil is probably the next thing to try. Got one knocking around the garage somewhere, but damned if I can find it.
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mgbill

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Cars : MGB 1963, MGB GT 1967, MGBGT 1968, MGB 1971, MGBGT 1975, MG MIDGET 1977, MGBGT 1978, MGB 1981 and some I may have forgot
Posts : 315

PostSubject: Re: Electronic ignition   Wed Oct 02, 2013 1:12 am

I have known quite a lot electronic ignition units break down, what make is your one ?
Bill
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Andy

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Location : Margate
Cars : 1953 Rover 75, 1974 Rover 3500s, 1998 Honda CB750
Posts : 328

PostSubject: Re: Electronic ignition   Wed Oct 02, 2013 6:34 am

It's mounted at an awkward angle, and the script on the box is very stylised, but it looks like Newtronic, or something very similar.
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mgbill

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Cars : MGB 1963, MGB GT 1967, MGBGT 1968, MGB 1971, MGBGT 1975, MG MIDGET 1977, MGBGT 1978, MGB 1981 and some I may have forgot
Posts : 315

PostSubject: Re: Electronic ignition   Wed Oct 02, 2013 7:10 am

sorry never heard of newtronic, try going back to standard ignition and see if you have the same problem, I have probably got the parts in stock too
Bill
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Andy

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Location : Margate
Cars : 1953 Rover 75, 1974 Rover 3500s, 1998 Honda CB750
Posts : 328

PostSubject: Re: Electronic ignition   Mon Oct 21, 2013 4:11 am

A new set of HT leads sorted it.
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mgbill

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Cars : MGB 1963, MGB GT 1967, MGBGT 1968, MGB 1971, MGBGT 1975, MG MIDGET 1977, MGBGT 1978, MGB 1981 and some I may have forgot
Posts : 315

PostSubject: Re: Electronic ignition   Mon Oct 21, 2013 4:34 am

glad you sorted it hope they were the proper copper ones
Bill
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Andy

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Location : Margate
Cars : 1953 Rover 75, 1974 Rover 3500s, 1998 Honda CB750
Posts : 328

PostSubject: Re: Electronic ignition   Tue Oct 22, 2013 7:02 am

Didn't ask to be honest Bill. I generally deal with Wins, who only list one option. I thought about Magnecor, but £80+ seemed a bit steep.
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mgbill

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Cars : MGB 1963, MGB GT 1967, MGBGT 1968, MGB 1971, MGBGT 1975, MG MIDGET 1977, MGBGT 1978, MGB 1981 and some I may have forgot
Posts : 315

PostSubject: Re: Electronic ignition   Tue Oct 22, 2013 7:43 am

Sure is expensive, mine for the v8 are £21.40
Bill
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Andy

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Location : Margate
Cars : 1953 Rover 75, 1974 Rover 3500s, 1998 Honda CB750
Posts : 328

PostSubject: Re: Electronic ignition   Wed Oct 23, 2013 6:47 am

That's pretty much what I paid (£26 with postage). It never occurred to me that you would stock them. Do you keep many Rover parts, or just those common the the V8 Bs?
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mgbill

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Cars : MGB 1963, MGB GT 1967, MGBGT 1968, MGB 1971, MGBGT 1975, MG MIDGET 1977, MGBGT 1978, MGB 1981 and some I may have forgot
Posts : 315

PostSubject: Re: Electronic ignition   Wed Oct 23, 2013 6:53 am

Not that many Rover parts , I used to have a few 3500s;s including an estate version. Parts are always available generally within the week though
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