Hello. I have a 98 crv that I just rebuilt the head on. Timing is on (checked it 3 times), compression checks out. The problem is it idles like poo, way too low after adjusting it, and between the 1-2.5k rpm marks, it has literally no power until it passes those rpms. Didn’t get a chance to plug a scanner but, I was on my way home from work and it started something new. Check engine light came on and now it’s also backfiring through the intake. Tried to set ignition timing but, it only runs semi okay with it advanced all the way +. Replaced the tps, replaced the timing belt, checked all grounds. Everything seems to be fine. Anyone have any suggestions? B20b non VTEC.

Also, I ordered a new o2 sensor & map. Waiting on that to come in but, I don’t think those will be my problem.

 

The cel code would be helpful. I would get that before throwing more parts at it.

 

Codes are 71 72 & 73 which are misfires.
Changed the distributor and wired, tps, map, fuel pump, new timing belt, and I’m sure there’s more. Kinda lost at this point..