Can you over tighten manifold bolts?
Over tightening can damage the seal or cause the manifold to warp. Any thing that has a seal should absolutely be torqued to spec. Anything that has a torque spec; which is really everything should be to avoid snapped of bolts or things falling off from fasteners loosing over time do to vibration.
Why is the intake manifold on my Ford Grand Marquis cracking?
These intakes were prone to cracking due to the stresses incurred during acceleration. Ford issued a recall and offered a replacement intake manifold, made of a plastic and metal composite. If you own a Grand Marquis with this issue, it is best not to drive it until you can replace the intake.
Is there a recall on a Ford Grand Marquis?
Ford issued a recall and offered a replacement intake manifold, made of a plastic and metal composite. If you own a Grand Marquis with this issue, it is best not to drive it until you can replace the intake. If you must drive it, however, you can attempt a temporary fix that will keep you on the road for a short time.
When did Ford put plastic intake manifold on Crown Victoria?
From the 1996 through 2001 model years, Ford Motor Company installed plastic intake manifolds on their Crown Victorias, Lincoln Town Cars and Mercury Grand Marquis equipped with 4.6-liter engines.
What to do with a cracked intake manifold?
Once it’s cold, spray the engine cleaner on the cracked area and clean it with a rag until no residue, grease or dirt remains. Use the sandpaper to scuff the area well to help the epoxy adhere.
Is the intake manifold on a Mercury Grand Marquis overheating?
The 1996-2001 Mercury Grand Marquis with a 100% plastic intake manifold is known for engine overheating, even with normal use, and a coolant leak from the front of the manifold.
Is there a problem with my Mercury Grand Marquis?
Problem Description. The 1996-2001 Mercury Grand Marquis with a 100% plastic intake manifold is known for engine overheating, even with normal use, and a coolant leak from the front of the manifold.
What are the symptoms of a bad intake manifold gasket?
Coolant leaks Another symptom of a faulty intake manifold gasket is coolant leaks. Some intake manifold gaskets also seal engine coolant, and if the gasket wears out it may lead to a coolant leak. This may produce a distinct coolant smell, along with steam, and drips or puddles of coolant underneath the vehicle.
How often do you lose antifreeze on a Mercury Grand Marquis?
Lose about 1 gallon of antifreeze every 3 weeks. My mechanic says this is a common problem. Ford should be embarrassed and replace all for free. The engineer that designed the manifold and the manager that approved the design should own one of these cars for the rest of their lives.