bridgemute
Active member
Hello, new member here. Hoping you guys can help me. I have a 66 mustang with a 200 six and I took it out for a ride and I may have pushed it a little harder than I have in the past and it started backfiring in the exhaust.
I have a few mods. 2 barrel 2100 autolight carb. Split exhaust with Clifford performance header. Racing cam.
Things I have checked and the issue still persists:
Fuel filter replaced
Fuel flow verified
Different carb installed
Changed points, condenser, spark plugs
New distributor cap and rotor
Checked spark plug wire resistance
Replaced torn exhaust header gasket
Watched valve operation while engine was cranked
No lifter rods appeared bent.
Any other ideas? Maybe a valve knocked out of adjustment? Maybe a slightly bent lifter rod or lifter damaged?
I have a few mods. 2 barrel 2100 autolight carb. Split exhaust with Clifford performance header. Racing cam.
Things I have checked and the issue still persists:
Fuel filter replaced
Fuel flow verified
Different carb installed
Changed points, condenser, spark plugs
New distributor cap and rotor
Checked spark plug wire resistance
Replaced torn exhaust header gasket
Watched valve operation while engine was cranked
No lifter rods appeared bent.
Any other ideas? Maybe a valve knocked out of adjustment? Maybe a slightly bent lifter rod or lifter damaged?