tb42 misfire

Have you checked the compression on each cylinder?

That does not matter if the misfire is not always there.

Shock horror, could also be a head gasket with a very small water leak. Are you using any water at all?

A compression test is always a must, especially with everything else you have done. I always like to keep an annual or twice yearly check on compression on petrol engines. Really gives you an indication when that rebuild is getting imminent.

live in north qld, about a hour north of townsville , but thanks for the reply

thanks for reply tour boy . i'll go and see my local mechanic and get him to do a few checks. i actualy spoke to the nissan dealer about this little problem and the only things they could come up with was replace the rotor , because they thought the rev limiter was faulty , and they also said to disconect the tacho as it might have a short. both of these things did not work , so they said learn to live with it
. not saying all nissan dealers are like this , with the learn to live with it attitude. went to ford first ( being a ford maverick) as soon as i mentioned maverick ,went no further got told go to nissan.

thanks rowdy, i'll get the mechanic to check that as well.

sometimes under load around the 80 - 90 khm range and i'll try the tappits at that setting.
thanks

stephen probably better to trythe extended rotor button i think this is the main part as it shortens the distance the spark has to jump to fire steve

steven , i have sent a email to performance ignition regarding the rotor and waiting for reply , thanks for the information and reply.
regards stephen j.

final word , had mechanic do compression check , check for head crack, and also check valve recess . all ok . i have installed extended rotor from performance ignitionmelb , no more misfire at idle under load or at 80-90km .so far so good .the rotor seems to have fixed the problem , but when the budget allows a electronic conversion will be put in place . so thanks to everyone who replied your advice was extremly welcome.
regards stephenj.

ferret ,can i use a nissan one from an electronic ignition model , or do i have to use a conversion of the aftermarket type ?