1990 Geo Storm loss power

Tiny
APERRADO
  • MEMBER
  • 1990 GEO STORM
Engine Mechanical problem
1990 Geo Storm 4 cyl Two Wheel Drive Manual 170.00 miles

I found that 2 pistons of my geo are no working I checked the wires all have spark I take out the 2 spark plugs and found that they are clean what will be the possible cause of it
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Wednesday, June 4th, 2008 AT 11:39 PM

8 Replies

Tiny
JACK42
  • MEMBER
If they are next to each other it may have a blown head gasket. Do a compression test to verify.
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Thursday, June 5th, 2008 AT 7:52 AM
Tiny
APERRADO
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I made a compression test
the # 1 piston read 180
the # 2 piston read 180
the # 3 piston read 185
the # 4 piston read 180
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Tuesday, June 10th, 2008 AT 10:51 PM
Tiny
JACK42
  • MEMBER
Well its not compression, probably injectors.I have seen 2 go out at once, not very common but not unheard of. Get a noid light and test the injector harness to be sure th elight flashes on every one, if it does the injectors are most likely bad, if not get back to me
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Wednesday, June 11th, 2008 AT 7:25 AM
Tiny
APERRADO
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Hi I got a noid light and tested the the injectors the light flashes on all injectors, I took off the air duct and found the tb dirty inside of it.
I will remove the injectors rail and clean everything
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Sunday, June 15th, 2008 AT 3:39 PM
Tiny
JACK42
  • MEMBER
Pull the plugs and keep them in order. If any injectors arent working there should be a color difference in the spark plugs
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Monday, June 16th, 2008 AT 7:33 AM
Tiny
APERRADO
  • MEMBER
Well I pulled the spark plugs out and the 2 that work had black powder around the tip and the other two were clean with no residue.
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Monday, June 16th, 2008 AT 8:54 PM
Tiny
JACK42
  • MEMBER
Sounds like bad injectors, no fuel getting into the cylinders
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Tuesday, June 17th, 2008 AT 7:40 AM
Tiny
APERRADO
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It took me a long time to get to fix my car. I did buy the injectors and that seems to have solved the problem. Thanks for all your help it really was usefull.
Thank you for your time.
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Saturday, August 2nd, 2008 AT 12:41 AM

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