I have a 1984 500 sel American version. Pulled it in the shop to change spark plugs, because it was missing really bad, now it will not start or even pop I double checked firing order. I am getting super blue spark. I put gas / starting ether in intake held flapper down stepped on peddle and still no pop. If anyone has any ideas please help....ty Doug

Pull one spark plug from each side, and check if they are soaked in fuel.




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Plugs are wet, replaced ,w/bosch no pop

Where are you getting spark, at the plugs, coil wire??

__________________
I really gets fun when they all don't run

84 500SL
99 Jeep XJ
93 Jeep YJ
03 Custom Softail

Need this data.

I have good spark at the plugs,I have checked primary and 2ndary of coil its within spec.
replaced wires cap and rotor.

If you have good spark at the plugs, unless it is dumping so much fuel that it can't fire, you should get something, even it is a backfire. Pouring in additional fuel and starting fluid may have compounded the problem if it was flooded to begin with. The flooding condition, if it existed, should have evaporated over night. The only thing left is compression.

Frustrating

__________________
I really gets fun when they all don't run

84 500SL
99 Jeep XJ
93 Jeep YJ
03 Custom Softail

Best guess:

#1. Fouled spark plugs.
#2. Low compression.
#3. Bad Altitude Sensor.
#4. Leaking Cold Start Valve
#5. Leaking Fuel Injectors
#6. Possible bad Fuel Pressure Regulator
#7. Damaged Oxygen Sensor
#8. Bad Water Temp computer Sensor