I have a 99 civic Si with a b16 & my car cranks but won't start. Cranking sounds normal not slow. Checked fuses, checked the grounds, checked for corrosion on harness, found a bit but cleaned it out & checked spark plugs. Fuel pump is engaging & checked to see if fuel is being sprayed & it is. Tested for spark & all good. Changed distributor, changed ECU & even changed battery. Checked the timing & it's on point. Tried starting fluid but didn't work. Did a compression test it wasn't the greatest it was 130 across cylinder 4, 3 & 2 but cylinder 1 was at 90. My car did over heat a few months ago & I knew the car was overheating when I bought it but it was electrical issue when I bought it that cause the fans not to work. I haven't done a leak down test yet but...am I looking a possible blown head gasket 🙁 or what else can I try or check that I haven't yet