I am having mayjor troubles diagnosing a problem with a truck I just bought when I got the truck it wasnt running at all, I went over everything one bit at a time hade trooubles getting it started with all the basics covered I have finaly got it running and had it running for a bit. the thing I cant figure out is that when you crank the throttle at abnout 1500-2000 rpm it just starts bogging, the more throtle I add the more it bogs tps and map are both good the fuel system checks good as far as I can tell, injectors regulater ect. timing is good checked repededly even checked valve timing pump as plenty of pressure, any susgetions somthing Im missing, Ists an 88 4.3 sanoma

 

dont mind the typos I was a little rushed ......sorry