HOLLEY EFI - THIS is real wierd
#1
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HOLLEY EFI - THIS is real wierd
OK - tonight is the first time I have had to work on the boat since SUNDAY.
Last SUNDAY I tied the boat to a local dock and tried to get the idle right.
I couldn't get a stable idle.
I could hear a popping noise from the odd bank and when it did the AFR would jump.
Turns out cylinder #5 was the culprit. When I was installing the plugs I thought I heard a snap but after pulling the plug I couldn't find anything wrong and put it back in.
Tonight I pulled the plug and hung it on the front of the engine so I could see the spark. NO SPARK, installed a new plug, SAME results, ohm'd out the wires. OK, installed the plug on #1's wire, good spark. Put #1 wire on terminal #5 ( distributor cap ) NO SPARK
What could cause the system to not fire #5 ???
Last SUNDAY I tied the boat to a local dock and tried to get the idle right.
I couldn't get a stable idle.
I could hear a popping noise from the odd bank and when it did the AFR would jump.
Turns out cylinder #5 was the culprit. When I was installing the plugs I thought I heard a snap but after pulling the plug I couldn't find anything wrong and put it back in.
Tonight I pulled the plug and hung it on the front of the engine so I could see the spark. NO SPARK, installed a new plug, SAME results, ohm'd out the wires. OK, installed the plug on #1's wire, good spark. Put #1 wire on terminal #5 ( distributor cap ) NO SPARK
What could cause the system to not fire #5 ???
#4
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The new HOLLEY Dual sinc - has the crank and cam sensor built in. I am running sequential injection. Holley HP EFI, Holley TB. Edelbrock EFI intake and fuel rails, Holley flow matched 66 PPH injectors. The engine runs and idles just not smooth. Cylinder #5 isn't firing most of the time. It does fire about every 10 seconds.
#8
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OK it is not the cap or rotor. I wired a spark plug to the coil and on cranking the engine you can see a miss. Something is telling it not to fire #5. There isn't anything special about the Hall effect sensor - just a window opening triggers it right. The reluctor looks the same for all the cylinders. Is there anything in the programing that could cause this???
#10
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It is not a fuel problem - it is a spark problem. The system is NOT sending a spark signal to the coil for cylinder #5. I wired a spark plug directly to the coil and cranked the engine with the fuse for the injectors pulled.
Their is a miss in the spark coming from the coil. Why only #5? Is there anything in the programing that could cause it to not fire #5.
Their is a miss in the spark coming from the coil. Why only #5? Is there anything in the programing that could cause it to not fire #5.