Ben Jordan Posted February 12, 2006 Share Posted February 12, 2006 I have now got a new Vacuum advance unit, Advance unit to plenum hose, Mallory plug leads, Dizzy cap, Rotor arm but im still waiting for the plugs as Steve Lund forgot to put them in the parcel. When i was testing the vacuum advance i managed to mash the vacuum advance to plenum pipe in the running engine to the vacuum advance is definitely not working. I am going to work in the Rangie tomorrow and would like it to start returning more then a 1/4 a tank of petrol for 26 miles I didn't really want to fit the parts until the plugs arrive but i would like to get the vacuum advance done today in the hope i may get a better MPG for tomorrow. Anyway i have looked through my workshop manual and it tells me how to test the ignition system how to remove and replace the dizzy but not how to replace the individual parts. The bits i would like to have an idea about before i do the job are the Vacuum advance unit and the rotor arm. The vacuum unit looks simple with its two Torx's heads (which are tiny, I have a standard set and they are way smaller than any i have, looks like a trip to Hal frauds) but the actuating arm with the hole worries me somewhat. As i dont want to take the old one out and that arm be connected to some complicated mechanism that pings out all over the place. Can you tell im used to modern electronic engines? All help gratefully received as always. Quote Link to comment Share on other sites More sharing options...
geoffbeaumont Posted February 12, 2006 Share Posted February 12, 2006 Hi Ben, It won't ping all over the place The arm hooks onto another arm with a peg on it which is fairly steady. You can hook it a bit closer to the hole if you need to. You'll need to remove the dizzy - it's probably possible to do in situ, but it would be very fiddly. Take the dizzy cap off so you can see what you're doing. Don't forget to put the plastic seal in place before you try to hook the arm - it gets in the way less if you put it on the vacuum advance unit rather than the dizzy. Don't overtighten the bolts, they strip easily. Quote Link to comment Share on other sites More sharing options...
Ben Jordan Posted February 12, 2006 Author Share Posted February 12, 2006 Hi Ben,It won't ping all over the place The arm hooks onto another arm with a peg on it which is fairly steady. You can hook it a bit closer to the hole if you need to. You'll need to remove the dizzy - it's probably possible to do in situ, but it would be very fiddly. Take the dizzy cap off so you can see what you're doing. Don't forget to put the plastic seal in place before you try to hook the arm - it gets in the way less if you put it on the vacuum advance unit rather than the dizzy. Don't overtighten the bolts, they strip easily. Thanks Geoff, I managed to get it done it was dead simple once i started taking it apart. The advance mechanism is not spring loaded is it? As i pulled the Vacuum unit out it pull the pin towards the gap and stayed there so it was dead easy to hook the new one up Just making sure it's not meant to spring back. The hardest part was figuring out with of the new leads when where. I did have a bit of a problem with the engine not firing after fitting all the new bits but soon realised that i had knocked off the plug on the side of the Dizzy whilst changing the cap. I love my V8 again, it is so smooth and powerful now. I must have been down on power by 50% and ive not got the new plugs yet Quote Link to comment Share on other sites More sharing options...
geoffbeaumont Posted February 12, 2006 Share Posted February 12, 2006 I love my V8 again, it is so smooth and powerful now. I must have been down on power by 50% and ive not got the new plugs yet Glad to hear it. Hopefully mine will be too once I get my hands on a new alternator... Quote Link to comment Share on other sites More sharing options...
Niall_CSK Posted February 13, 2006 Share Posted February 13, 2006 The advance mechanism is not spring loaded is it? As i pulled the Vacuum unit out it pull the pin towards the gap and stayed there so it was dead easy to hook the new one up ........ I love my V8 again, it is so smooth and powerful now. I must have been down on power by 50% and ive not got the new plugs yet The base plate that the vacumn advance is also attached to the fly weights below the plate. Sorry I didn't see thia as I was busy, the attached might have been some help. Quote Link to comment Share on other sites More sharing options...
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