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| Car Tune Up |
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nonnus29
Member #2,606
August 2002
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I was having trouble with my car running roughly a couple of months ago. I had started buying only 10% ethanol added gasoline at the time. I took it in for a tune up and the mechanic said that ethanol is much more sensitive to spark plug gap spacing and ignition timeing than normal gas. After the tune up it ran great. So have you been using 10% ethanol gas? |
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BAF
Member #2,981
December 2002
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Well, I got more power, but now the engine misfires like crazy (hopefully it's the 4 year old spark plugs in it). I have new sparkplugs here, just waiting for the engine to cool down and me to go find a spark plug gapper before I put the new plugs in. [edit] |
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bamccaig
Member #7,536
July 2006
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What did you do to make it misfire!?
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Matt Smith
Member #783
November 2000
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Tank tank pressure problems are easy, just replace your filler cap. or you can find the pressure-relief hole in your existing one and scrape out the corrosion and dirt. |
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BAF
Member #2,981
December 2002
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bamccaig: I assume it was the spark plugs being old. The old ones were all the same color, they looked like the normal ones in the link posted before, and they all looked the same so that's good. And it runs a LOT better (and didn't misfire at all) and doesn't seem to run rough at all with the new plugs. I'll look into the tank pressure thing (it's NOT normal to build pressure like that?) and pick up a new cap if I can't clean the current cap. When I drive tomorrow I'll see if it feels like it has more power. |
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piccolo
Member #3,163
January 2003
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I think its normal; I have the same car as you but in manual and when I take the cap off too put gas in, it release a huge vacuum . wow |
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Matt Smith
Member #783
November 2000
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Rust is normal, but not desirable. |
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nonnus29
Member #2,606
August 2002
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Quote: Nope, just regular gasoline. My car isn't flexfuel anyway, so I don't think i can run E10 (or whatever it's called). Wrong, you can run up 15% ethanol on a stock automobile; ethanol can corrode rubber, but back in the 70's a law was passed that req'd auto manufacturers to build cars that can handle some ethanol. |
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jhuuskon
Member #302
April 2000
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Quote: Also, jhuuskon, the throttle wheel has the throttle cable actually on bottom, and when you open the throttle up it pulls on the top cable. The it's the kickdown actuator cable probably. Does your kickdown work normally? If it does, don't touch it. If it doesn't like it should, take it to a professional to have it adjusted properly (i still insist the home mechanic shouldn't touch anything that has a direct effect on the operation of automatic transmissions. Quote: (it's NOT normal to build pressure like that?) No, your tank should have a vacuum relif valve in the filler cap (new regime) or somewhere in the filler piping (old republic). Ideally, when you open the tank, you don't hear any hissing. You don't deserve my sig. |
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BAF
Member #2,981
December 2002
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Well, it will kick down unless it's in overdrive. When you are in overdrive, if you step on it, it doesn't kick back down unless the RPMs go down to like 1000 (going up a hill or something). It also likes to shift into overdrive early. |
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jhuuskon
Member #302
April 2000
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I just dropped my car today for the follow-up check after last month's failed inspection. It passed this time, but after i came home and added the costs to my maintenance log, i wanted to cry. For the reason, figure out the attachment. You don't deserve my sig. |
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Arthur Kalliokoski
Second in Command
February 2005
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Gunk built up in the throttle body can cause poor idle, don't go wild with the carb cleaner or you might melt some plastic gadgetry such as idle control motor valves. If the O2 sensor has 60k+ miles on it, you'd probably pick up some power and miles per gallon by putting in a new one. Shifting too soon and harsh shifting sounds like some valves inside the transmission are hanging up on gunk inside, there's a slight chance that a fluid/filter change would help. Some people have told me that the Slick 50 people make an additive called TransX that can improve shifting. They all watch too much MSNBC... they get ideas. |
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BAF
Member #2,981
December 2002
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It shifts fine, just goes into OD too soon, IMO. I'll have to look at the throttle body too, because it also sticks in one spot. jhuuskon: I can't read any of that. |
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jhuuskon
Member #302
April 2000
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You can read the sum in bold. You don't deserve my sig. |
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Or was it doing that already...? 
)
