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post #1 of 9 Old 08-18-2013, 11:06 AM Thread Starter
WHITTIERWRANGLE
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1987 YJ Wrangler 
 
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1987 2.5 l wrangler no start

I have a 1987 YJ Wrangler w/ a 2.5L and manual trans.
After sitting for a year it will not start but will start with starting fluid but dies.
I verified injector pulse w/ a noid light and 15 PSI of cranking fuel pressure but no spray from the injector.
If I unplug the injector connector and hit the injector with a 9 volt battery it will shoot fuel.
Could this be a bad injector or is there a fuel pressure regulator problem?

Any ideas would be appreciated.

Thanks


Last edited by WHITTIERWRANGLE; 08-18-2013 at 07:41 PM. Reason: More Info
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post #2 of 9 Old 08-19-2013, 08:00 AM
Que89YJ
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1989 YJ Wrangler 
 
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You need to use a noid light and see if the injector is pulsing. Your use of the battery shows the injector is at least functional and a good idea. Sounds like a bad crank sensor.
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post #3 of 9 Old 08-19-2013, 11:34 AM Thread Starter
WHITTIERWRANGLE
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I used a Noid light and had pulse but after checking farther, it only has 6 volts pulsing and needs 12. There must be a corroded connection somewhere.
I now go on the hunt.
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post #4 of 9 Old 08-19-2013, 12:15 PM
JeepinAintCheap
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if you dont have any pulse at all what would be the fix?
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post #5 of 9 Old 08-19-2013, 12:20 PM
Que89YJ
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1989 YJ Wrangler 
 
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Wait, it is starting with starter fluid and you are getting pulses. You are getting fuel out of the injector with a 9 volt battery. Are you getting any fuel with the pulse from the injector? Bad gas....
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post #6 of 9 Old 08-19-2013, 12:26 PM Thread Starter
WHITTIERWRANGLE
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1987 YJ Wrangler 
 
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I do not get fuel when cranking and the injector is being pulsed.
I since have checked the voltage that is being sent to the injector and it is only 6 volts and should be 12 volts. This probably means that I have corrosion in a connector somewhere.
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post #7 of 9 Old 08-19-2013, 08:57 PM
Que89YJ
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1989 YJ Wrangler 
 
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You should have 12 before it cranks.
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post #8 of 9 Old 08-19-2013, 10:19 PM Thread Starter
WHITTIERWRANGLE
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If I had 12 before cranking the injector would stay on and dump fuel into the engine.
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post #9 of 9 Old 08-20-2013, 07:40 AM
Que89YJ
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1989 YJ Wrangler 
 
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No, it is ground switched from the ecu. When you fisrst cycle the key on with the meter on the injector do you see 12 volts come on then go off?
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cranks , fuel pressure , no start

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