i just bought a 91 jimmy it runs pretty good but it back fires or sputters on the high till it hits a certain speed could that be the spark plugs and wires or the fuel injectors or both

Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
Add image file

Motorsforum.com 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.