1999 geo metro

i can get it to start but it will only stay running if i firewall the gas i cut ut the cat thinking it was clogged up same prob i checked the timing
belt and marks all are in line the motor has over 100,000 miles but it has good compression i am at a loss help
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.