1999 mercury grand marquis
Car started out rough idle and wouldn’t stay
running for it to stay running but dies as as I
hit the gas. I replaced the fuel
pump/screen/filter still same thing then
replaced mass air sensor,idle sensor ,spark
plugs tested the coil packs all good also
starter was replaced. After all this now it won’t
start again. Also oil was in throttle body. Motor
Doesn’t knock sounds great when it’s running.
I also hear some air …plz help