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Title: ignition problem Post by: dhla40 on 04 September, 2009, 05:49:25 PM Had a few ignition problems lately, the pertronix ignitor I fitted a few weeks ago started to fire erratically and could not be trusted so I fitted a spare points dizzy. The car ran ok for fifty miles but I could feel a slight misfire at light throttle and on removing the cap found that all four contacts had a small v groove in them presumably from spark erosion? I rechecked the rotor alignment at the static timing point and it looked close enough and the advance operated normally using strobe gun. I am sure the contacts were ok when I fitted the points dizzy which came off another car but looks the same as my old one. Has anyone had any cap contact burning issues before?
Sean Title: Re: ignition problem Post by: angelorange on 08 September, 2009, 11:04:14 AM Cap no4 terminal to modified inlet manifold - had arc there but am running MSD6AL multi spark box through original set up.
Apparently, Cap (plastic) groves caused by arc can be fixed with nail varnish! For a tenner you can get a new cap Title: Re: ignition problem Post by: dhla40 on 08 September, 2009, 05:36:02 PM I am talking about the internal contacts where the spark jumps from the rotor arm, have fitted an old cap and will monitor the situation.
Sean Title: Re: ignition problem Post by: angelorange on 08 September, 2009, 09:26:42 PM Is cap a good fit?
A slight groove in each is not a big issue as long as they all wear the same. Best. Title: Re: ignition problem Post by: dhla40 on 09 September, 2009, 10:29:11 AM It is a marelli cap but the contact erosion is all on the same side as if the rotor is too far away when the spark jumps but I have checked the alignment with the cap off and using a reference mark on the side of the dizzy and all seems to be in order. Just another one of those mysteries of Italian electrics I guess?
Sean |