I need some help with my 72 240. It has a Pertronix ignitor new NGK plugs, new fuel filter, cap and rotor. The car idles fine pulls hard through all gears but once I reach cursing speed it acts like it is missing. This all started this weekend after I filled up with gas. Could it be a bad tank of gas or what.

Thanks

Greg

Originally posted by lan240

but once I reach cursing speed it acts like it is missing.

cursing speed - the speed at which you go "SHHHHHHHHHIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII"...

Ian,

I would check the dizzy to make sure the rotor button and everything is ok - i had an ignition problem with my 73 240Z and it all looked good except the allegedly new rotor button was cracked. Also, check the fuel pump & filter (which you said were ok so that is all right).

Other than that it could well be the gas. Here is AUS the gas is crap - they water it down with ethanol to as much as 30%. Bastards. It makes havoc with the engine and i get my car pinging when i get dodgy fuel.

I havent really helped much but just double check everything.

While on the subject, you might be interested to hear the latest about ethanol in petrol... http://www.drive.com.au/news/article.asp?article=http://drive.fairfax.com.au/content-new/news/general/2003/02/20/FFXMW7UJDCD.html

I would never quessed that there would be any ethanol left to add to gas, as the Aussies drink most of it!