rotary fury

any ideas why leading and trailing timing marks jump when pointing timing ligth at pulley? its such a pain sometimes. any help is apreciated!

Racer X

Is this at idle?Is the engine warmed up?I just did my leading timing on my 83 and at idle its fairly straight forward to set the timing.

j9fd3s

yeah, mine dont jump around either. maybe you have bad wires/plugs/connextion?



mike

rotary fury

yes its at idle. usually is the trailing that jumps sometimes but this time is both.

Jeff20B

Maybe the wire clamp is getting a signal from an adjacent plug wire? Mine does that (cheapo timing light).

sgieldon

Mine Did the same thing! I have a $120.00 Timming Light.



Instead of hooking it up towards the Spark Plugs.

Hook it up to the wires comming out of the Disti instead.

Works everytime unless your wires are worn out as stated above.



Could also be CrossTriggering? But I doupt it.

Steve

sgieldon

rotary fury

ill look into it and let ya know

chase78

jumping timing marker is a good sighn of miss fire. give it a good tune up

wires, plugs , the works. most of the time trail plugs are rock solid not much jumping. Leads can be a little jumpy just depends of mileage and carb set up.

but if everything is stock leads don't have to bet absolute perfect. also remember to follow the manual set up about water temp wiring durning timing.

rotary fury

starter went to heaven gettin an other one

chase78

starter what ?????? push start it that