Question about 2000 Lincoln LS

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Running rough I had a diagnoisis done and the resolt was: #4 misfire, coolant leaking into spark plug hole, they tell me that I need to replace the intake manifold gasket and replace the intake. at the same time do a tune up the car have 121,000 miles the estimate is $ 1,400 that is a lots of money for this days and times, is there an alternative solution to the problem? thank you Vincent

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  • pietro1 Jan 11, 2009

    thank you I will try both,

  • thehoods96 Jan 13, 2009

    I've had this car for about 2 years and it's been a big hassle. I'm had a free diagnostic done today and they said I need a tune up. Before I do that I'm going to get a full check and if it cost me more than a grand, I'll just sell it. It's been a money pit so far.

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Well if the coolant is leaking in by the spark plug thats bad news. You can try and go to a parts house and put in a bottle of coolant stop leak but the down side of this is some times it will plug up other things also like the heater core and radiator. The only other thing i can say is get a few estimates

Posted on Jan 11, 2009

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How to fix a code P0304


The P0304 code means that the cylinder 4 is misfiring or is randomly misfiring. Start by checking for intake leaks an if no leaks are found the next step is to replace the spark plugs on cylinder 4. If the problem persist more tests needs to be done to diagnose problem, see "Possible Causes"

- Faulty spark plug 4
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