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#1
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Were do I start looking?
This weekend I ran my car in a bracket race and my car has developed,an top end miss. The first 2 rounds it was ok and the next round it missed alittle and by the 5th round it was bad. My batteries were charged and I had the same jetting in my car for the last 2 years float levels are good also. I had 7lbs of fuel pressure going through the traps. Wires are in pretty good shape I took a chance and changed the spark plugs. Still no change. Is it possible my MSD unit is trying to go south? By the way I was on a 1/8th mile track crossing at 5900rpms and I lost about .07 in ET. Any ideas were to start looking for my problem. The car cranks fine and goes up stairs with no problems in the burn out.
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#2
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A high speed miss is ussually caused by too big of a spark plug gap with high cylinder pressures. What gap are you running?
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#3
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what type of fuel pump do you have is this a small block or big block.
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#4
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The gap on my plugs are .040 and I run the holley blue pump. This is on a 360 small block. It isn't a consistant miss, it comes and goes just on the top end.
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#5
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What coil are you running and how old is it? and what is the OHM drop on your wires?
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#6
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And do you have the wires seperated porperly to prevent a cross fire?
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