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Sedans Lincoln LS 2000 LS Misfire Clue, maybe solution?
13 messages, Last post on Mar 01, 2009 at 5:28 AM
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Hi, My 2000 V6 LS is having the misfire issue again. Already replaced leaky valve cover gaskets, coil packs and spark plugs. Car was running well, until now. Misfire at idle and under load (random misfire). Sometimes it sets the MIL, other times it does not. Solution: the expensive solution is to use Techron fuel additive with every other gas tank fill up. The engine purrs like a kitten with NO misfire. However, this is too expensive and a temporary fix. So does anyone have any insight into this? The coil packs cannot be bad again, or else Techron would not be effective. I am thinking that either water in the gas tank, or EGR issues? I think that by Techron increasing the octane in the fuel, it might be compensating for a stuck EGR maybe. I also doubt dirty fuel injectors since they would be faulty even with Techron use. Any ideas please? Thanks! Frank
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I wonder if the cause could be carbon buildup in the combustion chamber? I haven't talked to anyone whos done a head gasket, this is just a guess. The EGR is a more likely candidate: the transfer passages can clog with cabon. I've seen this on newer german cars, so it's definitly a possibility. It happens on every car but is more noticable on engines where the performance has been pushed a bit over normal. (like the 3.0 found in the LS) I too have an 00 LS6 with a slight, random misfire. It hasn't troubled me much yet (the first misfire I solved was a cross threaded spark plug by the previous owner...that sucked. I think I only have about 2 threads engaged on my drivers side rear plug after re-tapping it. |
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Replying to: frank_1 (Feb 21, 2009 3:34 pm) |
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Replying to: frank_1 (Feb 21, 2009 3:34 pm)
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Replying to: toomanyfumes (Feb 22, 2009 4:11 pm)
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Replying to: akirby (Feb 23, 2009 5:54 am)
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Replying to: toomanyfumes (Feb 23, 2009 6:31 am)
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Replying to: akirby (Feb 23, 2009 6:37 am)
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Replying to: toomanyfumes (Feb 24, 2009 5:28 pm)
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Replying to: leadfoot4 (Feb 26, 2009 4:05 am) Don't all cars have valve cover gaskets?   
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