Pulling my Hair Out - Team Camaro Tech
Troubleshooting Diagnosing problems done here.

 
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post #1 of 5 (permalink) Old Feb 3rd, 03, 10:20 AM Thread Starter
 
Join Date: Aug 2000
Location: Streetman, TX. 75859
Posts: 18
Hey, I'm about to go bald. Help me guys.
Just got my sbc fired the other day and can't get to run right. When setting the timing (with new timing light) I noticed the light was irregular. I reach down to make sure I was getting fire and pulled at the #1 plug boot. It slid off about half way and the engine sped up. Put it back on and it immediately went to mis-firing again. I ordered a new cap and rotor for my HEI and check everything out. It still does the same thing. I am running new wires and accel plugs. Any suggestions why this would be occurring. If the #1 is doing it, the others are probably doing something simular.
Thanks
Craig
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post #2 of 5 (permalink) Old Feb 3rd, 03, 11:34 AM
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Join Date: Dec 2001
Location: ocala, FL
Posts: 210
well, if it has way too much advanced timing, then if you eliminate a cylinder from the engine, it will speed up due to having one less piston working against the motion of the crankshaft. what is your base timing supposed to be set at? did you check base timing? what is your advance method?(vaccum advance, mechanical, electronic spark timing?) i am sure that you are familliar with these things, but if you set base timing with the advance already on, then you will advance way too much and yes, the motor will work against itself.
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post #3 of 5 (permalink) Old Feb 3rd, 03, 11:49 AM Thread Starter
 
Join Date: Aug 2000
Location: Streetman, TX. 75859
Posts: 18
Nate,
Thanks for the response. I just ordered a TDC locator tool to make sure I have the right "marked" balancer or if the outer ring has moved. It is a DZ 302 that has been put together. I will check the timing mark when I get the tool. However, I have never witness this. I have a pretty good ear when timing and the vacuum is at about 18 to 19 in. but the idle still seems rough and the response is sluggish. I will wait to confirm TDC and will let you know.
Again, I appreciate the response and all tips are helpful.
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post #4 of 5 (permalink) Old Feb 3rd, 03, 01:14 PM
 
Join Date: Jan 2002
Posts: 1,035
Spark plug gap okay? Sounds like too much of a gap..
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post #5 of 5 (permalink) Old Feb 3rd, 03, 07:30 PM
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Join Date: Nov 2002
Location: Aiea, Hawaii
Posts: 571
I also have a pretty good ear for timing. I remember well over perculating my 429's radiator on a run down the coast of Wainae. Unless some cap contacts are shorted to number one the only other explanation of reduced power is number one is interfering when firing due to added BTDC firing (advanced timing) or maybe your intake valve isn't sealed when firing or a head gasket snafu. Try removing other plug wires besides #1. Just disconnect only one when running. I'd figure if you get the same results running on 7 cylinders and an idle speed increase you're just hearing the results of an advanced timing or all you intake valves leak. At least you'll know it's not #1 specific if you get the same results removing other plug wires.
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