1996 Chevrolet Cheyenne Repair Question
Mileage: 200,000 miles.
5.7 liter 350 chevy pickup cranks but wont start backfires through thottle body
Asked by Darryl10Answer
Check Dist cap for arcing. any rececnt work?
no work done lately that i am aware of
check capif good check compression
I will check the distributer cap and then compression and let you know .thank you for your time
either your timing is over 20 degrees off or your catalytic converter is plugged due to too much fuel from a bad temp sensor. it is telling your computer that you are in negative 40 and spraying way too much fuel. Replace your low temp sensor and cat and you should be good to go. Also check your valve covers and gaskets. the back fire might have also escaped there as well as coming out of your throttle body. hope this helps. i had the same problem and i spent a lot of money before finding the correct information. that I would pay it forward!