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Old 04-15-2011, 07:05 PM   #1 (permalink)
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Default Engine Cranking but won't start

engine cranking but won't start. Started after washed the engine compartment and dried it with air compressor. Getting fat spark, getting fuel at the injector (fuel rail), but no combustion. Fuel (or something) seems to be escaping each injector, leaving a flan pattern on the rail. Thinking the injectors aren't opening, which may be caused by shorted computer?

Any suggestions welcomed. THanks.
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Old 04-16-2011, 03:03 AM   #2 (permalink)
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You engine computer is mounted on the cabin side of the fire wall behind the glove box and shouldn't have been shorted out from washing the engine.

Which year of Esteem do you have, and which engine size 1.6 or 1.8 ?
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Old 04-16-2011, 10:34 AM   #3 (permalink)
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it's a 1.6L (2000 Esteem). Could anything else have shorted? I'm about to do a resistance test on the individual injectors. Having a hard time pulling the couplers off the injectors. Is there a certain way to remove them? I've already tried with pliers but didn't want to pull too hard since I don't want to bust anything. If it's not the injectors, is there a test to pinpoint where the problem is in the wiring?
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Old 04-16-2011, 11:43 PM   #4 (permalink)
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I got 12 ohms at each injector, and about 2 amps coming from each coupler, so injectors seem to be working. After trying to crank it again, it does sound like some combustion is happening, but not enough to keep it going at an idle. Can it be a sensor? Is the computer not getting enough info? Can you conclude that Camshaft position sensor is functioning if you are getting spark?
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Old 04-17-2011, 01:23 PM   #5 (permalink)
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Not sure about the cam sensor but I believe you are correct, I'll have to check when I get home, there should be a crank sensor as well that you can test.
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Old 04-20-2011, 10:31 PM   #6 (permalink)
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Hooked a scan tool up and it returned the random misfire code P0300. I was hoping it would isolate the problem a bit better. Does this disqualify the Cam Position Sensor? To summarize:
1. Getting spark
2. Getting fuel at fuel rail
3. Did resistance test of injectors, seems to check out: 12 ohms at each injector
4. Getting current at each injector coupler (2 amps)
5. replaced plugs and they seem to be wet with fuel, although a couple plugs are getting more soot on them than others.
6. Scan tool yields a 'P0300' code (random misfire)
7. engine cranks good, sounds like some combustion is happening but not enough to idle.
8. problem started after washing the engine compartment and dried with air compressor

I'm thinking it's a sensor (i.e. Cam Position Sensor) but the scan tool is only giving me P0300. Any ideas/suggestions would be greatly appreciated.

Thanks.
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Old 04-22-2011, 12:57 PM   #7 (permalink)
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Check vacuum hoses,that might be disturbed or disconnected.
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Old 04-30-2011, 05:14 PM   #8 (permalink)
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I finally got the car started. The power wire from the Cam position sensor failed a continuity test, so I replaced it (re-routed from the coupler straight to the battery). Car fires up fine.

However .... NOW I'm getting a flashing check engine light and the same random misfire code P0300 is coming up - no other code. I likely didn't see the flashing check engine light before b/c the car wouldn't even start.

I checked the EGR valve, wiring seems to be fine, but to test the whole unit, I blocked the intake/exhaust ports with thin piece of aluminum, thinking this might give an idea of valve malfunction (thinking the misfire was being caused by lean air/fuel mixture). Upon starting the car with the EGR block in place, I'm getting the exact same symptoms - flashing check engine light and P0300 code after a few minutes of running. Can I conclude the EGR is working with it blocked?

According to the scan tool, the catlyst monitor, Evap system monitor, EGR system monitor, and oxygen sensor monitor were unable to complete their cycle but the Misfire monitor, FUel System Monitor and Comprehensive Component Monitor have completed their cycles.


Any ideas? This car's been down for over a month now. Sick of riding my bike.
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Old 05-01-2011, 09:51 AM   #9 (permalink)
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I have a similar problem. Mine runs pretty good but stumbles at idle, sometimes stalls. Used a piece of hose for sound scope and injectors all had same clicking rythym until it stumbled. Then noticed #1,2 injectors were making radical clicking. Pinched the fuel return line and the motor smooths back out and runs normal. All injectors clicking the same again. Release the pinched return line and immediately stumbles. Strange tho, my codes are 171,300,304. 1&2 seem to be the culprits, not 4. And my fuel pressure checks out fine with guage. May not be of any help but it won't hurt to try pinching the line.
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Old 05-01-2011, 05:17 PM   #10 (permalink)
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Quote:
Originally Posted by jggolf View Post
I have a similar problem. Mine runs pretty good but stumbles at idle, sometimes stalls. Used a piece of hose for sound scope and injectors all had same clicking rythym until it stumbled. Then noticed #1,2 injectors were making radical clicking. Pinched the fuel return line and the motor smooths back out and runs normal. All injectors clicking the same again. Release the pinched return line and immediately stumbles. Strange tho, my codes are 171,300,304. 1&2 seem to be the culprits, not 4. And my fuel pressure checks out fine with guage. May not be of any help but it won't hurt to try pinching the line.
Try swapping injectors and putting 1 and 2 where 3 and 4 go and 3 and 4 where 1 and 2 go and then see what codes you get.
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