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slight judder
Posted: 10 Jun 2007, 15:43
by skins
ok just took car (1981 a/c) for a run and seems to be running okish - however, when the car is at rest there is a judder every now and then.
What I mean is that the engine shakes just a bit more than I think it should once very few seconds and the sound from the exhaust seems to not to be as smooth as i think it should when this happens.
Any ideas what might be causing this?
Posted: 10 Jun 2007, 16:41
by jason k
carb balance maybe.
re
Posted: 10 Jun 2007, 18:53
by skins
do you know how i sort that?
Posted: 10 Jun 2007, 19:30
by kevtherev
Intermittent Misfire
plug gap ...,plugs... mixture...air leak...just a few
I changed my plugs and set the gap...solved the problem
Posted: 10 Jun 2007, 19:33
by toomanytoys
if it still has the idle stabiliser fitted, then it could be at fault... disconnect the 2 plugs on it and plug them together and forget about replacing it..
re
Posted: 10 Jun 2007, 19:54
by skins
replaced plugs and adjusted gap to spec.
there is no idle stabiliser fitted
could it be dodgy ht leads?
also - what does it mean if the idle screw and the bypass idle screw next to it have no audible effect when turned
Posted: 10 Jun 2007, 20:09
by kevtherev
yes it could ...or any thing connected to "bang" part of the cycle
Check and clean all low tension connections to the coil etc
is it a good clean white spark at tickover?
Posted: 10 Jun 2007, 20:19
by camper
Toomanytoys i looked at this van over the weekend .There is no stabiliser connected its bypassed ie wires connected together.Ive suggested to do a check list ignition timing plugs & HT leads .Apparently uneven running has only just developed .The ignition timing was altered without strobe before trip to me .Ive suggested to skins read up on the wike to set up the ignition timing & have pointed out the diffrences between vacum pipes connected and not with regard to 7 degrees btdc & 5 atdc,If this was my van i would get a compression test before any think else.