problems with my 92 s10 blazer

i am having problems with my 92 blazer it is loosing power. my husband has changed the plugs and wires and air temperature control and fuel filter so any help will be helpful

Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
Add image file
Upload is a website by car enthusiasts for car enthusiasts. It is not affiliated with any of the car or spare part manufacturers or car dealers discussed here. All logos and trade names are the property of their respective owners.