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What are the possible causes for a flooded 1993 454ci throttle body injection engine when warm?



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It is possible the throttle body butterfly is sticky and not opening correctly. To fix it get a throttle body brush($1.99 at the store) and clean the carbon or dirt out of the throttle body. You can get to the butterfly through the air intake. screwdriver removes the hose clamp. Use a degreaser like crc or brake cleaner to clean out the exact area where the butterfly seats and scrub the area with brush. When you start it it will smoke and smell funny for a minute then clear up. This is common on a lot of Fuel injection systems. 5 minute job