300 E NO START
Thread Starter
Joined: Oct 2007
Posts: 2
300 E NO START
I just picked up a 1986 300 e
It cranks has fuel to the rail but dosnt seem to be getting ignition.
The car was running befor it sat for about a year.
Any ideas on where and what I can check to try and get running.
Thanks.Doug
I am a marine mech and do have knowledge of fuel inj and electronics.
It cranks has fuel to the rail but dosnt seem to be getting ignition.
The car was running befor it sat for about a year.
Any ideas on where and what I can check to try and get running.
Thanks.Doug
I am a marine mech and do have knowledge of fuel inj and electronics.
Super Moderator
Joined: Feb 2006
Posts: 889
From:
RE: 300 E NO START
Are you getting a spark at the plug or not? Are the plugs clean?
If no spark, then you have to begin at the plug and back-trace the problem to the source.
You can pull the plugwire off one of the spark plugs, insert a spare spark plug into the wire, connect the ground-base of the plug to a ground source such as the shock tower bolt, then turn the engine over and check for a spark. If no spark then...
To bypass the entire cap rotor assy. do the same test with the spare plug inserted inside the coil wire. If no spark then....
Use a volt meter to test voltage on the primaryside of the ignition coil.
It should be 12v approx.
If you've checked all your other fuses etc, you should be able to isolate the problem. I agree with NAZ, most likely the cap and rotor contacts need cleaning. We'll pray its not the EZL module, ok.
Blue
If no spark, then you have to begin at the plug and back-trace the problem to the source.
You can pull the plugwire off one of the spark plugs, insert a spare spark plug into the wire, connect the ground-base of the plug to a ground source such as the shock tower bolt, then turn the engine over and check for a spark. If no spark then...
To bypass the entire cap rotor assy. do the same test with the spare plug inserted inside the coil wire. If no spark then....
Use a volt meter to test voltage on the primaryside of the ignition coil.
It should be 12v approx.
If you've checked all your other fuses etc, you should be able to isolate the problem. I agree with NAZ, most likely the cap and rotor contacts need cleaning. We'll pray its not the EZL module, ok.
Blue
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