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1991 Geo Metro Lack of Power

Tiny
BUCKY
  • MEMBER
  • 1991 GEO METRO
  • FWD
  • AUTOMATIC
  • 190,000 MILES
My 1991 Geo Metro LSI Convertible automatic L3 1.0 L will idle for a short time then die. Driveability- it has litlle powr to pull itself along. If I push on the gas it doesn't accellerate as I putter along. Replaced plugs, plug wires, and rotor and cap as well as vacum advance tubing to the distrubutor. No help. Timing is beyond 20 deg BTDC. Apparently the belt slipped one or two teeth so I realigned timing marks on cam shaft pulley and crank shaft pulley. I can adjust timing closer to 6 deg BTDC but engine idles badly, will die and no power. If I adjust the timing the other way it idles up faster, stays running and has a little more power. Where do I go from here to solve this problem?
Thanks
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Monday, January 3rd, 2011 AT 4:31 AM

1 Reply

Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
Did you adjust ignition timing with or without vacuum to the distributor?
Did you test the distributor vacuum diaphragm for leaks?
What is the idling speed?
Have you checked engine compression? 199 psi, minimum is 156 psi with 14 psi variations as the limit.
Are the timing belt markings as shown in diagram?
Is the Check Engine Light indicating?
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Monday, January 3rd, 2011 AT 4:07 PM

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