A pulse detector will tell you if the electrical portion of the injection system is working properly. That may not be a bad idea. But I think the problem would be with the physical injector itself not opening or spraying an uneven mist.

If that is the case, I am not sure how you would tell which injector is clogged without removing and benchtesting each one.

Hi All,


"bill buttermore" is doing a fine job, click here, do exactly as he says.

Regards, Norm

thanks norm and everyone else ill let you guys know the end result

i was recomended to buy a breather for the oil filler cap to see the change in idle quality and see if the computer recognises it. any idea what size i should get?

A new oil filler cap? or a breather? I would think at your parts store, there will be a book of universal oil fill caps... That would be my best guess.

a breather

That same book will also contain the part number for the OEM replacement cap.


If you get the correct cap, it will be the right size.


The breather for your application will be in the same book.

At your knowledge level, cross posting does more harm than good. More so, when the posts contain different information.

i just needed to know what size the oil filler cap hole was so i could get the breather, nothing more

Ok had my friends brother take the car yesterday. he hooked it up on vaccum guages and everything and it turned out to be the o2 sensor i replaced 2 months before the problem started with a cheap o2 sensor. My guess is when i was cranking down the back spark plugs i hit the o2 sensor and messed it up somehow. Well anyways thanks for all your help norm and everyone.