3rd Gen / L98 Engine Tech 1982 - 1992 Engine Related

Back to square one

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Old Apr 18, 2003 | 04:39 PM
  #1  
pigsticker's Avatar
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From: mississippi
Back to square one

Well, I've checked the pick-up coil, it had no continuity and the resistance was 800. I'm getting fire to my injectors. To whoever asked my adjustable fuel regulator is a BBK. It's set at about 50 psi. New MSD Blaster coil, MSD 8.5mm wires, Blue streak brass cap and rotor. Ignition module was checked and its good. I tried to crank it a while ago and it made a good effort ( I even thought it was going to bust off for a minute) but died and then just starting turning over. Does anyone know if the throttle position sensor, idle air valve or a bad map sensor would keep it from firing up? I took the computer out and discovered it has a Hypertech chip in it I didn't know it had. I was taking the vacuum line off the BBK fuel reg. and pulled the whole port out of the housing. Ended up having to stick it back in and JB weld it. That did the trick. Must be cheaply made. Anyway, any other ideas? HELP.
Old Apr 18, 2003 | 05:06 PM
  #2  
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If an engine won't start up, you need to follow basic troubleshooting procedure: engine needs propotional air, correctly mixed fuel, and a properly timed spark.

Air usually isn't a problem, saw you have 50 lbs pressure (be aware of possiblility of excess fuel, but that tends to be a carb only possibility), so I would concentrate on spark.

Do as suggested on other thread: put a spark plug on a spark plug wire and ground it. Is there a healthy spark when you crank? I've seen modules that were weak cause a skanky yellowish spark. If there is a good spark, is it properly timed? If distriibutor turns or timing chain skips a gear, the spark will be late and won't allow engine to run.

The resistance of the pick up coil sounds high. It's been years since I've ohmed one, so can't say for sure. Only one I've seen bad died when the distributor casting broke where the pickup coil sits, and it trashed the coil.

edit: was curious as to what pickup coil should read, so I did a google search and found this excellent site. Seems 800 is good.

http://www.performancedistributors.com/technical.htm

Last edited by angel71rs; Apr 18, 2003 at 05:10 PM.
Old Apr 18, 2003 | 05:20 PM
  #3  
pigsticker's Avatar
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I'm leaning like you said, toward the spark, I failed to mention that I did stick a plug in the #1 plug wire and grounded it and turned the engine over. I wasn't impressed with the spark, it seemed like a weak spark, it wasn't a strong blue spark like you would expect to see. I had someone sit in the car and turn it over while I slowly turned the distributer trying to find a sweet spot and hhad no luck.

Last edited by pigsticker; Apr 18, 2003 at 05:24 PM.
Old Apr 18, 2003 | 06:01 PM
  #4  
aklim's Avatar
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Try a known good coil and wire from coil to distributor and see if the spark improves. Also, when was the last time you did a cap and rotor? Finally, do the spark test on other cylinders just to make sure. I'd do the even bank or odd and see what kind of spark I git.
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