Coils and loom have been chacked but the spark on the plugs is very week and comes and goes
Honda 750 Huricane 1988
Have checked every thing including kill switch
I had similar problem, try also the connection of the pin the goes up the spark plug lead, sometimes it has crud and grease up there causing no electrical surge to go thru
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check the spark plug. if was working fine before i would start there and work your way back from that. clean the spark plug and test on a meter top part to the tip on the electrode. then check the lead then the wire/s into the coil pack
Dis-connect the negative connection from the the top of the motor and check for corrosion. The bike with not fire if it isn't getting a good ground. I have a 1983 750 shadow would not start dumped a lot of parts into it before I found the corroded connection.
one coil with the longer leads(I think goes on the left) and feeds cylnders 1&4, doesnt matter which the other feeds 2&3, again doesnt matter which. The coils fire on each stroke, compression and exhaust,
On this Honda the wires do separate from the coils. The wires with spark plug caps attached are sold separately . They are priced from $35 to $45 each( about $160). You can purchase bulk wire($5-$8 for 6ft Copper plug wire) and NGK spark plug caps ($5 each) and make your own. All materials should be available at your local dealer.
In order for it to start, you need to find out if it got spark and fuel. If you thinks it fuel, you could try a small shot of starting fuild into the air filter box. If it fires and then dies out it definitly lacking fuel. If it does fire up with starting fluid, you need to check spark. Remove one of the plug wires and install a spark plug on it. Gorund the plug to engine by resting it on a metal part. Locate the plug as to be able to see the gap on the plug. Crank engine over and check for spark at the gap. If no spark check kill switch. Ed
Most coils have the leads attached this way. The core of the lead is screwed onto the output pin of the coil, and then glued in to hold it tight. If you can break the bond and thread the lead off, it should become fairly clear.
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