1993 Corolla, Lack of Power and more

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NOSAKE
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  • 1 POST
1993 Toyota Corolla
153K miles, Manual Transmission

I went awhile without a gas cap, so I figure my problem is partly water damage related. I have a gas cap now, and and one point my car would not start. With a bottle of HEET and ten minutes of trying it eventually fired up. I've been through quite a few fuel cleaners now and I still have a huge lack of power. The idle is rough and hesitates every ~5 seconds. There is a rattle when I am in a high gear while going a slow speed. After sitting for awhile I get white smoke from the muffler off the start. My lack of power is defined by an inability to accelerate quickly, struggles with steep inclines, and a governor kicking in earlier than it has before. Also my MPG has dropped (probably expected).

I have replaced the fuel filter and spark plugs, with hardly any improvement. Any suggestions?
May 14, 2007 at 9:59 AM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,988 POSTS
[quote:4d8b100a69="NoSake"]1993 Toyota Corolla
153K miles, Manual Transmission

I went awhile without a gas cap, so I figure my problem is partly water damage related. I have a gas cap now, and and one point my car would not start. With a bottle of HEET and ten minutes of trying it eventually fired up. I've been through quite a few fuel cleaners now and I still have a huge lack of power. The idle is rough and hesitates every ~5 seconds. There is a rattle when I am in a high gear while going a slow speed. After sitting for awhile I get white smoke from the muffler off the start. My lack of power is defined by an inability to accelerate quickly, struggles with steep inclines, and a governor kicking in earlier than it has before. Also my MPG has dropped (probably expected).

I have replaced the fuel filter and spark plugs, with hardly any improvement. Any suggestions?[/quote:4d8b100a69]

Try checking the throttle position, mass airflow sensor and restriction in the exhaust system.

Also check the PCV valve and the EGR valve.

BTW when was the last major tune-up?
May 14, 2007 at 10:12 AM
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