Question about Mercury Grand Marquis

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How do i drain the gas tank on a 1998 Mercury Marquis?

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  • Mercury Master
  • 575 Answers

Siphon out most of tank into approved container.
to drain completely might have to remove tank.
Don't remove a full tank it is heavy and could spill on you.
good luck

Posted on May 06, 2013

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Posted on Jan 02, 2017

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  • 3 Answers

SOURCE: I need to drain the gas tank on my 1998 Chev.

Unbolt the bed bolts, remove the tailgate, unplug the light harness, and unbolt the fuel filler where it bolts to the bedside and get a couple of buddies to lift off the bed. That way you don't have to drop or drain the tank. It's much faster, on my truck it's only four bolts and the bed is not that heavy.

Posted on Oct 31, 2009

emissionwiz
  • 76109 Answers

SOURCE: firing diragram for a 1998 mercury marquis with a

here u go.


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Posted on Jun 16, 2010

  • 130 Answers

SOURCE: i was told the alternator was bad and drained the

assuming the repair was done correctly the you need to clean/repair the battery connections this should fix ya
hope this helps.

Posted on Jul 16, 2010

rickyrt441
  • 4399 Answers

SOURCE: my 1998 mercury Marquis stalls

Have you tried adjusting the idle?

Posted on Mar 01, 2011

SOURCE: on my 1998 grand marquis

Sounds like an injector "O" Ring is leaking

You should be able to see where it it leaking from

If it is the "O" Ring , you loosen the Fuel Rail
(Chrome Bracket) lift it up off the injector to
install new one

Posted on Apr 20, 2011

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1 Answer

Any ideas why a 1998 Mercury Grand Marquis would just suddenly stop running in the middle of the highway going 55 mph and w a half tank of gas in it and now turns over but wont actually start again?


first suggestion is broken timing belt
second is failed crank shaft position sensor
third is failed cam shaft position sensor
forth is failed ignition control module
fifth is faulty ECM or power fuses to the ignition, ecm

Mar 23, 2017 | 1998 Mercury Grand Marquis

1 Answer

Drain the fuel tank 2005 Mercury Marquis


Here is how to do it. There is a valve in the injector tubing that is used to test pressure. The valve inside it is like a valve stem. Use a valve stem remover and unscrew this part.

Have a piece of fuel line hose and clamp it to the injector rail stem and then run the hose to a gas can. Be careful to insulate where you set the gas can with newspapers or rubber mats.

Then turn on the ignition switch to run. Allow the fuel to fill 1 gas can at a time and shut the key off. The pump needs to rest as you are moving more gas this way than the engine could possibly use.

I moved about 14 gallons of gas in about 20 minutes this way including dumping the collected gas into another vehicle. Now I removed the fuel pump relay and bypassed it, but in hindsight it should work like I am showing you. My crankshaft sensor was bad and if yours is good you probably do not need to bypass the fuel pump relay.

Oct 01, 2015 | 2005 Mercury Grand Marquis

1 Answer

1998 mercury grand marquis will not turn over


It may be the battery is going dead. try putting a jump box or jumper cables and try again. good luck

Dec 07, 2013 | 1998 Mercury Grand Marquis

1 Answer

Can't find radiator drain on 1997 mercury marquis


It may not have one.
If there is no fitting on the bottom or the back side of the tanks, you would need to remove the lower hose to drain it.

Sep 21, 2012 | 1997 Mercury Grand Marquis

1 Answer

Water in gas tank


will need to completely drain tank, either remove tank from car or if has an external electric fuel pump you can disconnect fuel line between pump and engine, connect 12v battery to power supply of pump and pump gas out. make sure to run line to bucket to collect gas/water mix, remember water is heavier that gas so water will be on bottom of tank and first to pump out

Feb 05, 2012 | 1989 Mercury Grand Marquis

1 Answer

MY 1999 GRAND MARQUIS HAS BEEN SITTING FOR 2 YEARS AND MAY HAVE SEIZED, WHAT DO I DO TO CORRECT PROBLEM


lets see clean spark pugs tips with fine sand paper, drain oil, change fuel filter, if gas in tank, put gas cleaner in tank.

Feb 17, 2011 | 1999 Mercury Grand Marquis

1 Answer

My 1998 Mercury Grande Marquis intermittently fails to start. The scanner does not show a code. After about 20 minutes it has started. There are no warning lights coming on. Joe Thigpen, Austin, Texas


Who had the scanner, a repair shop?

Are you talking about a personal code reader?

Have you checked the fuel pressure at the rail?

We need more info
You haven't said what you do have, and what tests
determined what you have e.g. spark,fuel pressure.

Are you referring to the starter turning the engine over
or the engine not running?

Most llikely you have a failed fuel pump in the gas tank

Jan 31, 2011 | 1998 Mercury Grand Marquis

1 Answer

What do you know about the gas nozzles not letting you put the gas into the 1998 mercury grand marquis? It keeps spitting it out and will only let you put it in by hand and a small drizzle which takes...


inside the filler tube that connects fuel tank there is an air vent tube that lets air out as u fill the tank, the tube is made from a very light weight plastic and they can collapse, the result is slow fill or gush back when filling. You will need to replace the vent tube assembly, contact a ford dealer for the right parts, that is the only place other than a salvage yard to get the part.

Oct 08, 2010 | 1998 Mercury Grand Marquis

1 Answer

How to replace fuel pump on 1998 mercury marquis?


you have to remove fuel tank, hopefully its not full.

Jun 20, 2010 | 1998 Mercury Grand Marquis

3 Answers

1998 Mercury Grand Marquis Fuel Pump Replacement


you can try just resetting the fuel pump switch located in the car

the switch is originally in the car for in case of an accident, however, if changed, chances are you also have to reset it

in my 98 grand marquis, the switch is on the left side of the trunk

Jan 09, 2009 | 1983 Mercury Grand Marquis

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