Fox T-Bird/Cougar Forums

Technical => Engine Tech => Topic started by: wayfastwhitey87 on April 14, 2005, 11:31:44 AM

Title: wiered bump bump sound from motor
Post by: wayfastwhitey87 on April 14, 2005, 11:31:44 AM
hey guys can any one help me out,
 i have a 87 cougar when i go to floor it some times the motor will almost bogg down and make a noise like bump bump bump.  so if i let is coast and them put my foot back on the gas it does it agian.  when i let it coast and then after a minute or so it will run fine.  what could it be and could it hurt the car.
thanks
Title: Re: wiered bump bump sound from motor
Post by: Chuck W on April 14, 2005, 12:12:23 PM
When was the last time it was tuned up?  Fuel filter changed?
Title: Re: wiered bump bump sound from motor
Post by: Go Roush on April 14, 2005, 12:39:24 PM
It sounds like not enough fuel to me. My H.O. will do that sometimes, because I only have the factory fuel pump.  Need to upgrade.