I get different answers from a lot of people... what better to ask than honda-tech?

 

Check the head and block for codes.

The block code is right by the transmission, on a square section, with the engine code stamped into it.

 

If it's all USDM and stock it is a D16Y7 (non-VTEC) installed into a '88-'91 Civic or CRX with an automatic transmission. It is DPFI and is possibly running lean because of that.

PS - This is the wrong sub-forum.

 

you get different answers because you are not providing enough information to make a determination. OneBadTurboCRV is most likely right, but without the stamps it could be a d16a, a ZC or a D15b as well...