Great news! Sounds like you've got it.Hi there.
today I did more tests regarding the plug leads etc.
eventually found that the cap was not sending a spark to 1and 4 cylinders from the cap end.
So now have to find a cap, Supercheap can order me one for $49 plus postage, so that is my
only way forward. Wins have them for 9 GBP plus post, but going with the local option.
I always use 98 octane , 95 if thats all that is available.
One two or three occasions I have had similar problems and has been duff petrol.
Did not accelerate, popping & banging etc. Try replacing it .
First time it happened I had the whole fuel and ignition system to bits , gradually using up the fuel with testing etc and eventually had to fill up again . Instantly, problem solved . Another time it was on my Land Rover which had two tanks, one filled with the duff fuel, switching tanks would solve it or bring on the poor running, until refuelling.thank you for the info.
unfortunately the tank is 3/4 full, so taking in your advice I will buy an octane booster , add to the tank, give the car a good
bump up and down and see what happens....
Peter
hi there,
today I purchased a bottle of Octane booster, poured into the tank, started the car and no difference.
Still the appalling rough running, wont rev.
now wonder if something is wrong with the distributor with the electronic conversion done last year, maybe I should see whats
available in complete electronic distributors for the v8 engines. any recommendations with that regard?
looks like I am running out of options on this problem...
Peter
Have you done a compression check? Just to eliminate the really nasty stuff?
Having said that the symptoms you describe sound more like a vacuum leak or weak ignition spark. Is there any difference between choke out and in? If you do I would suspect fueling issues.
Do you notice a gradually rougher idle if left idling for a while (hard I know when it’s rough in the first place). I’ve found that can indicate a weak spark as the plugs foul due to incomplete combustion.