Questions & Answers for: Mercury Grand Marquis knocking valve

hard starting this car has been running just fine for the last 5 years.(knock on wood) It is hard to start warm or cold,and it does not matter if its been shut off 2 minuets or 2 days.I am thinking ...

I have a 2005 Grand Marquis (under 50,000 miles) and when i first get started, while accelerating, there is a rattling noise...definitely sounds like it comes from the front of the car versus the rear

i have a 2002 grand marquis,140 thousand miles...i change my oil on the regular,i take good care of the car..my problem is on my last oil change i noticed a slight tapping noise like the valves where ...

92 Mercury Grand Marquis 176K 4.6L - hard cold or damp weather starts, engine knocks upon hard acceleration or hill, no check engine light, EGR valve replaced 6months ago. Try higher octane gas, but ...

...knocking sound coming from the top section, or the bottom section of the engine, if it's from the bottom, it could be a connecting rod, that is going bad, also if it's from the top of the engine, ...

Motor clicks upon hard acceration it most likely is a spark knock ( ping ) try using high test fuel if the ping goes away try cleaning or replace the EGR valve . ( exhust gas recerulating valve )

97 mercury gran marquis possible stuck valve knocks when running unplug #2 fuel injector and it stops Do a leak-down test of that cylinder. If a valve, the test will tell you so and which one, whether

knocking noise it could be a piston noise or it may even be a bad crankshaft/connecting rod/bearing. have the oil pressure checked this may help to know what to do. some people describe a rocker noise

I have a 2002 grand marquis and it was running perfect until yesterday.... It's making a knocking sound when you crank up the car and it get louder when you press the gas... It quiets down at one ...