If the gap in your spark plug widens due to normal erosion, it leads to an increased voltage being required to create a spark in the chamber. HEI coils have a grounding bar under them, goes from the coil yoke to the center terminal of the 3 wire connector, and to distributor ground. The High Energy Spark Igniter (HEI) is a Class 3 (special) igniter used for direct spark ignition of oil or gas igniters or small burners. engine cranks but don't start? Browse Recommended Tools & Supplies For This Build As shown in the Crank/No Start video , you can easily check for spark with a spark … Good luck and keep me posted, be glad to help. Spark Plug wire made out of some super insulator that blocks timing light inductive pickup. The engine will not fire, and i have intermittent, if any spark. 1. I have a SBC 350 with hei ignition. The cart starts up great, runs great for 100 feet or so, then it's like the spark just dies and the engine stalls/cuts out. Some simple regular maintenance will save you a lot of money in the long run. Rotor/Cap problem resulting in voltage drop at spark plug terminals. Dirty, increased resistance, failure, or, no contact, coil won't fire. All are good. 4. At first I had no spark while cranking but as soon as I released the key it would sputter on occasion. Would crank normally but not start. Older rotors were made form lower quality plastics and can transmit spark through them, increasing resistance and heat, failure. dropped in teens one morning it wouldn’t start. The Intermittent Pilot uses a Spark Ignitor to ignite a pilot flame, that then in turn ignites the main burners. Found no spark. Have replaced spark plugs, had starter and battery tested. Check the red lead wire to the HEI for voltage, there should be 12 volts. 3. I have been chasing issues with this HEI for a while now. erik the wrench is here, we test for fuel, test the coil and distributor / ignition. The pickup coil monitors the rotation of the distributor and triggers the ignition system at the optimal moment to produce the best timed spark for best engine performance. When outside temp. The rotor turns when the engine is cranking. On top of that I found I also have an intermittent and weak spark. Truck ran fine with no indication of problem. Keeping your spark plugs in optimum condition can reduce your chances of experiencing an ignition coil failure. Truck was completely restored 20000 miles ago so mechanically it’s a … Edelbrock 600cfm carb is 6 months old. I have 13V at the distributor. don't worry! I bought a new cap, rotor, control module, coil, spark plugs, and the wires. No-spark conditions can have a number of causes, but for starters, we need to know if we have spark when we crank the engine. Replace HEI distributor and no start. The reason I am testing this HEI is I have a no start condition. HEI Coil output is weak. To check the secondary resistance, remove the screws that hold the coil in the cap, remove the coil and touch the negative meter lead to the ring terminal on the black wire (between the red and yellow) and touch the positive lead to the bottom of the coil where the rotor bushing makes contact. The engine ran fine before i pulled it out of my olds and stuck it into my s10. I was experiencing weak/intermittent spark on my 1989 EZGO 3PG so I did the HEI conversion using a BWD CBE4 ignition control module and a BWD E41 ignition coil and it's not going well. The primary resistance value should be between 0.6 – 1.5 ohms. It common for the ICM to fail on the HEI system and if you go to Auto Zone, they can give you the step by step instructions to replace the ICM. Inductive pickup on timing light is not working properly (weak) resulting in tolerance stack-up where it does not work on some engines. It's around $40.00 and it's under the rotor in the distributor assembly. 2.

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