How to test if all cylinders are firing?

[crrider80]

Hi, this topic has definitely been covered before but i have no idea what to search. I'd like to find out if all my cylinders are firing. How can i do this? The reason i question this is because my gte has been kind of sluggish ever since i fixed my major exhaust leak. mabye its because of my pancaked exhaust... idk.
-Steve

 

[suprashy]

Hi, this topic has definitely been covered before but i have no idea what to search. I'd like to find out if all my cylinders are firing. How can i do this? The reason i question this is because my gte has been kind of sluggish ever since i fixed my major exhaust leak. mabye its because of my pancaked exhaust... idk.
-Steve[/QUOTE

Use a scope or do what I did - use your finger on each injector, its pretty cool!!

http://www.cygnusx1.net/Supra/Library/TSRM/MK3/manual.aspx?Section=FI&Page=83

 

[Wills7MGTE]

Well if theres no spark it would be missing, when I first got mine it needed better plugs so I got a set of NGK with MSD wires, which cleared it up. It was audible misses and would vibrate the car slightly like it wanted to die, I pulled them out and yep there were fouled, so now it runs real strong, stronger with every mod.

 

[bluemk3]

if you think your engine is not firing youd be able to tell when you drive it or even at idle it woudl run like shit what i do tho in this case is remove one spark plug wire at a time from the col packs and see it idle changes if not replace and try another one th8is of corse will only tell you if its sparking or not it wont tell you if you are getting fuel or if you have severe blowby