- Apr 10, 2005
- 10
- 0
- 0
ok heres the deal...
had a 3.8L... blew it up... pulled it out... and put in a carbed 5.0. now... i can start the engine fine. it idles perfectly. if i slowly give it throttle its fine. it will gain rpms... so on and so forth. but if i juice the throttle to half or more, it backfires. large flame comes out the driver side of the carb. next problem... once the car heats up (approx. 4 minutes idle time) it starts backfiring every few seconds and eventually stalls out. i can literally see a flame comming out of the driver side of the carb when it backfires. i checked the timing. i readjusted the carb mixture screws. nothing has helped. any ideas?
holley 600
edelbrock performer intake
82 mustang 5.0 block
comp cam roller tip rockers
im beginning to think it could be a bad valve seat. once the heads heat up... maybe they are expanding and one of my intake valves isnt sealing properly. tell me what you think.
had a 3.8L... blew it up... pulled it out... and put in a carbed 5.0. now... i can start the engine fine. it idles perfectly. if i slowly give it throttle its fine. it will gain rpms... so on and so forth. but if i juice the throttle to half or more, it backfires. large flame comes out the driver side of the carb. next problem... once the car heats up (approx. 4 minutes idle time) it starts backfiring every few seconds and eventually stalls out. i can literally see a flame comming out of the driver side of the carb when it backfires. i checked the timing. i readjusted the carb mixture screws. nothing has helped. any ideas?
holley 600
edelbrock performer intake
82 mustang 5.0 block
comp cam roller tip rockers
im beginning to think it could be a bad valve seat. once the heads heat up... maybe they are expanding and one of my intake valves isnt sealing properly. tell me what you think.