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not working...
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Section : Ignition and Distributers
Posted By : Gavin McFarland, 28-Jul-2005,
11:37pm
While trying to see what's been wrong with my MKIV 1300 (seems fine now but don't yet trust it with long journeys!), I was poking about with the
distributor. Noticed that taking off the vacuum advance tube made no appreciable difference to the engine running. Doesn't seem to be an air leak in the
pipe or "elbows", but if the vacuum advance unit is taken off, I can suck or blow air through it (implying a split diaphragm?). Also, sucking on the tube
with the unit fitted doesn't move the baseplate (in fact, it seems pretty stiff). Is there a clever way of getting the baseplate out with the distributor
still on the engine?
Still on the original Delco dizzy, 40k miles. The car appears to run fine without vacuum advance (I never take it above 3500 RPM) but I take it I should
buy a new unit?
Typically, the car seems to be running fine, and the rain's started. Great...
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Posted By : Kevin Rochfort, 29-Jul-2005,
00:21am
Gavin,
On a Delco distributor the baseplate is easilly removable with the dizzy still fitted.
Remove the cap and the rotor arm.
Undo the two screws that hold the vacuum advance unit to the body and remove the unit along with the two clips that normally hold the cap.
Then remove the last screw that connects the baseplate to the body about 45 degrees round the body from one of the two screws that held the advance
unit.
Now grasp the points and or condensor and "jiggle" the whole unit and carefully lift the entire baseplate out from the body of the dizzy.
As the Haynes manual would say, re-assembly is simply the reversal of the removal process !!!!
regards,
Kevin
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Posted By : Colin Wake, 29-Jul-2005,
04:55pm
If you can suck the pipe and the base plate doesn't move, then the vacuum advance is faulty.
I have about a dozen duffers in my shed so it is clearly a common occurrance.
Cheers
Colin