I dont know how long. They were on when i got the car and engine.

 

I would change them then.

 

good place to start would be spark plugs. then you can have a look at them and see if one or two are older than the others. very common for the back one on the passenger side to be much older than the rest. also look for any that look different than the rest maybe has fuel on it or looks damp or oily. keep track of where the plugs came from.

 

Ok, I took out all the plugs. All had oil on the threads but dry BLACK ends. THen I also found that the wires running to the msd coil was bare and laying on e the vavle cover, AND that one of the coil bolts had a ground wire and the bolt was ready to fall out.

check out these plugs. 1 from each side.

 

Need some expert advice ;

I found a guy with MSD 8.5( like I have) wires and the MAP, and a TPS sensor for 60 bucks.
Wire have 5000 miles and they look new. Should I buy??

 

They can look fine on the outside, but the core is what could be crap....I'd stick with buying new wires.

 

150 for just the wires new. But 60 for 2 sensors and wires

 

your running rich. oh and need some plug wires. hay if you know the guy and know there good parts then go for it. ive used msd wires and have found thay last pretty good. well so long as not left on the exhaust,,,,lol. new plugs and wires and get that ground fastened right and i would think you would be good to go. better check your 02 sensors to make sure they arent fouled like the plugs. if you have headers you might want to consider switching the wires to run along the valve covers

 

My wires run along the cover already...luckly. And I forgot that these plugs are "cold" for the nos....which I have no plans of using on the street. Should I go with a hotter plug?

Also, how much fuel pressure should it be running?