1991 100 5 cyl. won't fire when warm

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Old 09-27-2008, 05:30 AM
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Default 1991 100 5 cyl. won't fire when warm

Any suggestions are appreciated. Just bought the car. When warm,won't start. Turns over fine feels like not getting fuel. The next morning she starts even though the belts squeal for a minute then runs fine. Shut her down and try to restart and get nothing, like she's not getting fuel. Ive checked the fuse and replaced the fuel pump relay, still nothing. Again the starter turns her over forever, but not ever a little fire. Love the car but this is a bit frustrating

For Sale in Michigan
Old 09-27-2008, 06:21 AM
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have you checked for spark and codes when its not starting?
Old 09-27-2008, 06:51 AM
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Default Re: have you checked for spark and codes when its not starting?

no, I have limited space and tools. don't even know what you are referring to
Old 09-27-2008, 07:02 AM
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Default ok, well on those times that its not starting, pull a spark plug, ground out the threads to

something metal under the hood, have someone crank while you watch to see if there is a spark in the plug. If there isn't spark, you know that your problem lies within the ignition system, if there is spark, it on the fuel/vacuum end of the system.

For checking codes, read the following link:<ul><li><a href="http://www.sjmautotechnik.com/trouble_shooting/100ecuf.html#fcone">http://www.sjmautotechnik.com/trouble_shooting/100ecuf.html#fcone</a</li></ul>
Old 09-27-2008, 07:26 AM
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Default Re: ok, well on those times that its not starting, pull a spark plug, ground out the threads to

thank you very much for your direction
Old 09-27-2008, 12:19 PM
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Default Re: ok, well on those times that its not starting,

if it turns out to be a fuel side problem, try using starter spray in the air boot or throttle body (2-3 squirts per try).
if the car starts, then you have a whole list of issues it could be, from fuel pressures, to dirty/stuck air plate, to vacuum leaks, to a simple tune-up, etc. you can check the sjm sites on these also.

if the car doesn't start/spark...you may want to look at the crank/rpm sensors, and by all means check your codes if you know how.
Old 09-27-2008, 01:47 PM
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Default Re: ok, well on those times that its not starting,

thanks
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