Ok so found one thread that had similar symptoms but I have a b20 vtec, I bought everything brand new distributor, plugs, wires, new injectors, new fuel rail, and still only cylinder 3 misses changed injectors from 3rd to 2nd still only the 3rd misses, can't figure it out

 

You can't make two threads regarding your topic. However confirm that cyl 3 injector is firing 2nd confirm spark in cyl 3 if those 2 check out compression test it.

 

I know I didn't mean to make 2 how do I delete one? I did the injector sprays and it has a healthy spark. To day was the first time it started, built it from the ground up brand new everything. Ok will check compression

 

Compression test ALL the cyls. and you can just leave it and edit the post to say "DELETE".

 

Ok sorry for the late reply was busy but did the test and all cylinders are at 120, the valves were to tight had to adjust the valves now it runs perfectly except when I hit the gas it starts to dye......

 

120 is very LOW ! have you is mechanical timing on ?

 

I tested it on cold start had very little time but I'm sure when its warmed you its higher

 

re-do It with the car at operation temp and the throttle wide open. don't forget to unplug the distributer !!!

 

Ok sorry for late reply the comp test came out to be 175 at all cylinders got it dynoed at 151 hp and 120ft to a bit low how can I increase without turbo I have full exhaust short ram intake ported and polished head wisco forged pistons manley h beam rods supertech dual valve sprins titanium retainers and valve locks as well as a tune any ideas on extra hp without turbo?

 

151 is way to low for a b20vtec with what you say is done to I,t you should be pushing 200whp easy. time for new rings it sounds like. Healthy b series should push 210+ compression on all cylinders something is wrong with yours

 

I did get the low compression pistons

 

ohhh umm then why not boost lol ? you're kinda asking the opposite of what you have your set up for. swap in high comp piston if you want to go N/A if not it's like wanting to turbo your 12:5:1 N/A type r.