Intake popping sound

[Darrin]

I searched and found nothing quite close enough to mine so here it goes... Bone stock '93 lx 5.0. Nothing has been removed...it's a virgin, all orig. It starts perfect, idles and you can't even tell it's on. Go to take off and I get about 4 popping sounds in the intake in very rapid succession. Then it goes fine. After I get to the main street I hit the gas and it bogs but doesn't miss and then more pops. If I give it half throttle it doesn't pop and accelerates fast then If I floor it it bogs and pops. New plugs, cap, rotor, wires, fuel filter, air filter and t.p.s. No change at all. Timing is at 10 deg. No codes, no engine light....

 

[Mustang5L5]

Sounds like you are backfiring into the intake.


What fuel octane are you using? WHat sort of plugs and what did you gap them at? EGR fuctional?

 

[ttop88]

Sounds like it's leaning out. Fuel punp could be weak and o2's may need replaced.

 

[Darrin]

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[Darrin]

Well, it was the mass air meter. I replaced it with my buddies on a whim and lo-and-behold.....It ran perfect. Ran the codes again and there were none. Put mine back in and it ran bad again and threw up the same codes...who would have thought....Bought a new one and put it in. SWEET