97 mpv need help asap please
 

Hi a have a 97 mazda mpv 3.0 I change head gasket and timing belt y set the timing and recheck 3 times I check all the plug everything look right is start right away but it not go over 2000 rpm and keep recheck the timing and everything and still the same please I need help on what it could be I need it to work and take my son to school HELP