Draining Gas Tank on a 96 LS400?
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Draining Gas Tank on a 96 LS400?
I'm trying to rule out the possibility of water/condensation in my tank as the car sat for close to a year with a pretty empty tank. It's really running rich blowing white smoke and giving random cylinder misfire codes. I put 10 gallons fresh fuel and some water absorber treatment with no luck yet. I plan on letting my 17 year old use it for school and work only because he's a damn good kid.
1996 LS400
1996 LS400
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Well, you can take off the fuel filter (look on lexls.com for tutorial) and turn the ignition on, but dont start the car. It will pump the fuel out.
Last edited by 1996LS400; 05-08-10 at 09:14 PM.
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It's kind of weird. After I disconnected the batt and it was cold, I started it and no codes even after idling for a few but it still smoked and idled rough. After a min or two I took it around the block and the codes show up. First time it was cylinder misfire 2 & 4. Parked, waited about 10 mins drove around the block again, rescanned and it said cylinders 6 & 8. I tried it again yesterday and only got cylinder misfire on 2. Does this still sound like it could be a coil issue?
Last edited by 1996LS400; 05-08-10 at 09:38 PM.
#7
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I'd start by draining the fuel, and then filling up 1/2 tank of high octane fuel, and adding a can of good fuel system cleaner, such as BG44K or Techron. Run it through the engine and see where that takes you. If that does not improve things, do a full tune up and check that the timing belt is aligned properly.
Also, to eliminate the possibility of a bad ignition coil, switch them places. If you're getting misfire codes on 2, 4, 6, 8, you will get them on 1, 3, 5, 7 after switching coils, if one of them is bad.
Also, to eliminate the possibility of a bad ignition coil, switch them places. If you're getting misfire codes on 2, 4, 6, 8, you will get them on 1, 3, 5, 7 after switching coils, if one of them is bad.
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