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1991 Geo Prism wont start


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vielosborne
Anonymous Poster
vielosborne@yahoo.com

Dec 11, 2008, 10:56 AM

Post #1 of 9 (2538 views)
1991 Geo Prism wont start Sign In

My 1991 Geo Prism is hard to start when cold, but runs and starts great when engine is warm Yesterday it was damp and it would not start at all, later in day it started ran great and started up several times fine, Today raining again and same condition will not start What could cause this and how to fix it


Tom Greenleaf
Ultimate Carjunky / Moderator
Tom Greenleaf profile image

Dec 11, 2008, 11:08 AM

Post #2 of 9 (2530 views)
Re: 1991 Geo Prism wont start Sign In

Hmmm? Is this more temp or moisture sensitive? Hard to say for now. See if you can determine if it lacks spark when it doesn't run at all or lack fuel. Should be lacking one or the other.

If more of a "wet" problem I'd suspect ign wires - coil(s) etc.,

T



vielosborne
Anonymous Poster
vielosborne@yahoo.com

Dec 11, 2008, 11:56 AM

Post #3 of 9 (2526 views)
Re: 1991 Geo Prism wont start Sign In

Not temperature, when engine is cold hard to start no matter what temperature outside, Now wont start when really really damp. Spark plugs were checked and were sparking, gas was also available


Tom Greenleaf
Ultimate Carjunky / Moderator
Tom Greenleaf profile image

Dec 11, 2008, 11:59 AM

Post #4 of 9 (2523 views)
Re: 1991 Geo Prism wont start Sign In

Will it respond to starting fluid sprayed into throttle body?

What method are you using to determine that fuel is available?

T



vielosborne
Anonymous Poster
vielosborne@yahoo.com

Dec 11, 2008, 12:06 PM

Post #5 of 9 (2519 views)
Re: 1991 Geo Prism wont start Sign In

checked spark plugs gas was on them. Also used start fluid and it did not respond.
Car started after the air seem to dry later in day and kept starting fine until this morning when it was again raining


vielosborne
Anonymous Poster
vielosborne@yahoo.com

Dec 11, 2008, 12:11 PM

Post #6 of 9 (2517 views)
Re: 1991 Geo Prism wont start Sign In

could this have anything to do with a problem with distributor?


Tom Greenleaf
Ultimate Carjunky / Moderator
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Dec 11, 2008, 2:01 PM

Post #7 of 9 (2514 views)
Re: 1991 Geo Prism wont start Sign In

Ok - Is spark that you noted at the spark plugs? Does the engine sound normal when cranking despite not starting? Sorry for all the questions but need to know why you have "wet" plugs and spark with zero reaction?

T



vielosborne
Anonymous Poster
vielosborne@yahoo.com

Dec 13, 2008, 9:44 AM

Post #8 of 9 (2499 views)
Re: 1991 Geo Prism wont start Sign In

yes, at the spark plug


Tom Greenleaf
Ultimate Carjunky / Moderator
Tom Greenleaf profile image

Dec 13, 2008, 10:15 AM

Post #9 of 9 (2495 views)
Re: 1991 Geo Prism wont start Sign In

I'm at a bit of a loss. You seem to have fuel and noted spark but said NO REACTION with both known. What is in the cards is possibly a flooding condition or plugs are just too soaked, weak, old to work well. I'd replace them with OE spec plugs just to know they are ok and not a part of the problem,

T







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