Timing mark

[Twin pipe]

can someone tell me the correct timing mark for my 94 chim 4.0 . its a bit lumpy at low speed.
Thanks

>>> Edited by Twin pipe on Thursday 4th September 21:51

[Twin pipe]

Yes ignition timing . i get a spitting noise when going slow, sounds coming from l/h engine bay,i thought it may be spitting back through air intake due to timing being too advanced.??

[Twin Pipe]

Thanks Soddy.