TPI!! Need help!!!! - Team Camaro Tech
Engine General Engine Discussion.

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post #1 of 17 (permalink) Old Mar 10th, 01, 05:03 PM Thread Starter
 
Join Date: Mar 2001
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For some reason the engine will crank but not turn over. We checked the timing, coil is still good, the injectors work. I dont know what else to do . I need some help guys!!!
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post #2 of 17 (permalink) Old Mar 10th, 01, 06:01 PM
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Need to clarify. Crank means turn over. Do you mean that the motor will not fire or the starter turns but the motor does not?
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post #3 of 17 (permalink) Old Mar 10th, 01, 06:19 PM Thread Starter
 
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The motor wont fire for some reason. fule pump and the lines are good too.
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post #4 of 17 (permalink) Old Mar 10th, 01, 10:23 PM
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Dribble or squirt a bit of fuel into the intake and crank it.
If it doesn't even try to start, check out the ignition more.
David

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post #5 of 17 (permalink) Old Mar 11th, 01, 02:15 AM
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How did you determine that the injectors are still working?? If that is the case....sounds like an igntion problem.
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post #6 of 17 (permalink) Old Mar 11th, 01, 10:06 AM
 
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are all the wires plugged back into the coil? a simple thing to overlook! i been there, done that.... felt rather stupid when a freind pointed it out
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post #7 of 17 (permalink) Old Mar 11th, 01, 02:26 PM
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Spark or fuel?Which one dont you have?Check for spark with the screwdriver to ground method.Do you have spark?That system needs 30+ # fuel pressure,need a gauge to check it.Cant guess at the fuel pressure.Try the carb cleaner in throttle body,to see if it tries to start.

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post #8 of 17 (permalink) Old Mar 12th, 01, 05:07 AM Thread Starter
 
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Ok, we sprayed some of that carb stuff in the intake and it started the motor then it stops. So it looks like we're getting a spark. What should I do now???
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post #9 of 17 (permalink) Old Mar 12th, 01, 02:52 PM Thread Starter
 
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well???
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post #10 of 17 (permalink) Old Mar 12th, 01, 03:12 PM
 
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Are you sure that you are getting fuel? This exact problem happened to my caveilier (my POS). it wouldn't start, but as soon as we sprayed some starting fluid in the intake it ran for a second. I found out that it was the fuel pump.
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post #11 of 17 (permalink) Old Mar 12th, 01, 04:02 PM
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I think that Tom hit it on the head. You need to check for fuel pressure at the fuel rail. There is a valve on the passenger side of the fuel rail, back near the distributor. Check it with a fuel gauge you need at least 35 pounds of pressure.

If you listen back at the tank, can you hear the fuel pump running when you turn the key to ON?

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post #12 of 17 (permalink) Old Mar 12th, 01, 04:16 PM Thread Starter
 
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We have 40+ fuel pressure, and the fuel pump does work you can here it turn on. We now think its the computer chip. We're gonna have the chip looked at.


[This message has been edited by S15327 (edited 03-12-2001).]
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post #13 of 17 (permalink) Old Mar 12th, 01, 05:53 PM
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Get a fuel injector test light and see if the injectors are getting any signal. If not, check the fuses and the main power wire (fusable link) to the injectors/computer.

I had a 83 Z28 one time that wouldn't start just like this. Turned out the main power wire to the computer and injectors had pulled loose near the battery. This was a heavy gauge wire straight from the battery to the computer harness.

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post #14 of 17 (permalink) Old Mar 14th, 01, 06:13 AM Thread Starter
 
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Ok, We bought a NODE light and tested it. The lights not doing anything, so now we know that its not getting fuel to the rails. Now what do we do??



[This message has been edited by S15327 (edited 03-14-2001).]
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post #15 of 17 (permalink) Old Mar 14th, 01, 10:39 AM
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I had the same problem with my conversion.
But I don`t know anything about your car. My problem was, that the custom programmed chip still had the VAT (Vehicle Anti Theft) code (why ?). So the fuel injectors will not work.
(Perhaps problems with your VAT ?)
With the new reprogrammed chip everything is o.k.
My buddy had a similar problem with his LT 1 and injectors from another wrecked car.
The injectors look similar to mine, but the engine didn`t run. He changed this type with the original ones and the engine still runs.

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