Ok everyone need some help. I have a 94 Z28. I did an oild change took it around the block. Then parked it and decided to wash off the oil under the motor. No it wont fire up. I thought I was carefull around the opti but I guess not. I also did a light spray to the top of the engine. After a few days I tried to fire it up and started right up. took it for a little test drive after I let it idle for about 20 mins. Had a little miss to it. I started to head back home then it was running really rough. Check engine light came on and it stalled out. I towed it home and just parked it. The next day It started up and I just let idle. It had a miss and started rev-ing up. after about 20 mins of that it shut down. Now a week later it hasn't fired up at all. I checked for spark on every wire and its there. I hooked up fuel pressure gauge and have fuel pressure. When I try to crank it just turnsover and every few sec. it has like a little back fire and thats it. What am I missing or is the opti just bad but producing spark. I'm searching everything to try to find an answer.

Please let me know what I'm missing.

Thanks in advance.

 

Did you scan it to see what turned on the SES light?

What are the fuel pressure readings?

 

No scan yet. I have the cable but looking for software to use on laptop. Its been so long and a new laptop so I forgot what software to use. After I wrote the Thread I went back outside and tried it again. It fired up. Its holding at a 2k idle. The fuel presaure was at 43 psi when turn key on - not started due to it not starting. It also sound like it has a miss right now at idle. I turned it off and started it again to make sure it would fire up. It did and same thing with th 2k idle. What software should I use to look at codes that I can put on my laptop?

Did i post this Thread in wrong place?

 

http://www.ttspowersystems.com/DataMaster.html

http://www.andywhittaker.com/ECU/Fre...0/Default.aspx

Could be posted here or in "LT1 Based Engine Tech".