engine has a miss

[the on going reality of shopower]

hey all i was driving my 93 SHO ATX today and when i was at a stop light
the engine started to miss i took it to work and scaned it but nothing
i suspected a bad plug or wire but it is hard to do. I also ran her really low on gas and put $20 of 91 Octan in it at some no name gas station??? May be bad gas???? ???? please help.

 

[yamahaSHO]

I highly doubt it is bad gas. Check your plugs and wires.

 

[HopefulSHO]

Did you run the cylinder balance test too? If you have one piston consistantly mis-firing that will tell you witch one.

 

[the on going reality of shopower]

how you do a cyl test.
I bought a fuel filter
going to install it now and filled her up with Ultra 94 gas from sunoco
the plugs and wires are new. i got some plugs from ford that are part # AGSP-32-FF4 are these right if so i can change them again i ask because i tried to change them already and seen a different # on the plugs????

 

[Dr. Tweak]

The instructions for running the test are on my site...

 

[HopefulSHO]

Technically the right plugs for the SHO are AGSP-32-PP's but thoes are discontinued now. They new plug is the AGSP-32-FM.

 

[the on going reality of shopower]

well i checked the plugs and wires they were good so i ran a cylinder test and came up with # 3 . So i started to listen to the injectors # 3 was dead.
So now what i have to change my injectors???? I hope the are not to much $$ as i all ready spent it all on the 60K i am going to do i guess really soon
please give some prices on these and if i should get all 6.

 

[SHOketer422]

how do u listen to your injectors? I've always been told that injectors never go bad, didn't beleive it, cause my car was running horribly, 13 miles to the gallon, and i figured, maybe its an injector, so i sent them off to be cleaned, but the bench an flow tests showed they were all perfect basically before and after....could it be the wiring for the injectors? your #3 injector isn't getting it's pulse? i was told that cause there's only one cyl not going good, it means your coil is fine, else you'd have 2 cyls bad... (i had this same problem and posted it on another forum)...now the question is, how do you figure out whether or not your injectors are getting pulses, and if not, what do we do! i have the exact same problem, so im verrrry intersted!

 

[the on going reality of shopower]

well i just used a screw driver ans put my ear on the end and i hear a ticing sound but on #3 there was nothing.
I now the coil is working because i took the wire off the plug and grounded it to the block and arcing was happening.
I what to know how to check injector wiring?????

 

[SHOketer422]

yea me too...

 

[the on going reality of shopower]

could someone help me its all i got on the road at the moment
i am driving the 91 + with a dealer plate for now but it is for work
i might just put the 91 + on the road if this turns out to be a fuel injector