TurboedMJ Posted November 30, 2022 Share Posted November 30, 2022 Ran fine on Saturday night. Went to start it sunday and no go. It's getting fuel and no spark. Any suggestions? Link to comment Share on other sites More sharing options...
pizzaman09 Posted November 30, 2022 Share Posted November 30, 2022 Start at the ignition coil and see if there is spark between it and the distributor. That will help isolate where the issue would be. Link to comment Share on other sites More sharing options...
eaglescout526 Posted November 30, 2022 Share Posted November 30, 2022 Test the CPS and make sure it’s outputting then right voltage first, then go to the coil. Link to comment Share on other sites More sharing options...
TurboedMJ Posted November 30, 2022 Author Share Posted November 30, 2022 CPS sensor is good and so is the coil... Link to comment Share on other sites More sharing options...
pizzaman09 Posted November 30, 2022 Share Posted November 30, 2022 14 minutes ago, TurboedMJ said: CPS sensor is good and so is the coil... If the coil is putting out spark, then check the distributor cap. Link to comment Share on other sites More sharing options...
eaglescout526 Posted November 30, 2022 Share Posted November 30, 2022 1 hour ago, TurboedMJ said: CPS sensor is good and so is the coil... Define good. Like more than .2VAC good? Or its putting out voltage good? Link to comment Share on other sites More sharing options...
TurboedMJ Posted November 30, 2022 Author Share Posted November 30, 2022 30 minutes ago, eaglescout526 said: Define good. Like more than .2VAC good? Or its putting out voltage good? when cranking it was showing 0.504VAC Link to comment Share on other sites More sharing options...
eaglescout526 Posted November 30, 2022 Share Posted November 30, 2022 That’s good voltage. Link to comment Share on other sites More sharing options...
jpnjake Posted November 30, 2022 Share Posted November 30, 2022 2 hours ago, TurboedMJ said: Ran fine on Saturday night. Went to start it sunday and no go. It's getting fuel and no spark. Any suggestions? Pull the distributor cap and make sure the cap and rotor look healthy Link to comment Share on other sites More sharing options...
89 MJ Posted November 30, 2022 Share Posted November 30, 2022 How are your spark plugs looking? Link to comment Share on other sites More sharing options...
cruiser54 Posted November 30, 2022 Share Posted November 30, 2022 So, it has spark at the plugs, right? Blue and not orange? How are you checking for fuel? With a gauge or just depressing the schrader valve on the fuel rail? Link to comment Share on other sites More sharing options...
TurboedMJ Posted December 4, 2022 Author Share Posted December 4, 2022 On 11/30/2022 at 4:06 AM, cruiser54 said: So, it has spark at the plugs, right? Blue and not orange? How are you checking for fuel? With a gauge or just depressing the schrader valve on the fuel rail? I can smell it, plus it has a leak somewhere around the number 1 injector. It doesn't have spark at the plug, I've narrowed it down to the points and condenser. Is there any write-ups about replacing them? On 11/29/2022 at 7:53 PM, jpnjake said: Pull the distributor cap and make sure the cap and rotor look healthy Cap and rotor look almost brand new. Link to comment Share on other sites More sharing options...
gogmorgo Posted December 4, 2022 Share Posted December 4, 2022 22 minutes ago, TurboedMJ said: I can smell it, plus it has a leak somewhere around the number 1 injector. It doesn't have spark at the plug, I've narrowed it down to the points and condenser. Is there any write-ups about replacing them? Cap and rotor look almost brand new. Your MJ was built about 15 years too late for points and condenser unless someone swapped something real old school in there. In which case all bets are off, who knows what was done. Spark comes from the coil, to the centre distributor button, through the rotor and back to the cap, and from there to the spark plugs. If the coil's good, and you've got spark at the coil and not at the plugs then there's really only four things it could be, distributor cap, rotor, the wire from the coil to the distributor, or else there's so much wobble in the distributor shaft the rotor isn't coming close enough to the contacts on the cap. It's very unlikely all your spark plug wires died or shorted at the same time, and a timing problem wouldn't leave you completely without spark. Link to comment Share on other sites More sharing options...
TurboedMJ Posted December 4, 2022 Author Share Posted December 4, 2022 (edited) 22 minutes ago, gogmorgo said: the wire from the coil to the distributor Tested that with an inline spark tester, it's still good. I'll replace the cap and rotor and see what happens. Edited December 4, 2022 by TurboedMJ Changed "online" to "inline" Link to comment Share on other sites More sharing options...
TurboedMJ Posted December 6, 2022 Author Share Posted December 6, 2022 Put in a new distributor rotor and it started right up Link to comment Share on other sites More sharing options...
jpnjake Posted December 6, 2022 Share Posted December 6, 2022 2 minutes ago, TurboedMJ said: Put in a new distributor rotor and it started right up …. Link to comment Share on other sites More sharing options...
TurboedMJ Posted December 6, 2022 Author Share Posted December 6, 2022 13 minutes ago, jpnjake said: …. The distributor rotor was the cause of the non start. Idk why tho, must've been a lemon Link to comment Share on other sites More sharing options...
jpnjake Posted December 6, 2022 Share Posted December 6, 2022 18 minutes ago, TurboedMJ said: The distributor rotor was the cause of the non start. Idk why tho, must've been a lemon Yeah lol, they can just do that sometimes, that’s why I carry 2 extras with me lol Link to comment Share on other sites More sharing options...
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