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Dang Car Refuses to Start! (AMC360) |
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SKeown
AMC Addicted Joined: Jul/30/2009 Location: Texas Status: Offline Points: 3085 |
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Rotate the engine until the rotor lines up with the #1 plug wire, if at that point the timing marks are in range, then replace the plugs, they are likely gas glazed. SKeown
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Bill_Martin
AMC Apprentice Joined: Jan/10/2008 Location: Madison, WI Status: Offline Points: 121 |
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3 speed auto
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Bill Martin
http://drnoise.org |
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Slate
AMC Addicted Joined: Feb/28/2012 Location: Airyzona Status: Offline Points: 2783 |
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Was thinking you could bump start it. With and auto you'd have to get it up to 25 or 30 and drop it in Drive to bump start.
Steve
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Moffman
AMC Nut Joined: Sep/28/2011 Location: New Jersey Status: Offline Points: 287 |
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Read what Fuzz said. The fact that it won't start after only sitting for a little while and isn't cranking over quick, makes it sound like it has compression and probably isn't timing related. No need to throw parts at it or dig into the distributor yet, especially if you have spark.
1. Fuel 2. Spark 3. Compression
How did you verify it's getting fuel? Just because fuel is in the bowl doesn't mean it's getting into the motor. You say sometimes it sounds like it wants to turn over too. Spray some carb cleaner into the intake and see if there is any difference. Check spark at the plug wire. |
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Boris Badanov
AMC Addicted Joined: Dec/14/2013 Location: NH USA Status: Offline Points: 4209 |
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An auto transmission needs a rear pump to be able to bump start.
I do not believe a 74 has one. Anyway, it looks like a timing issue. Cam timing (skipped or broken timing chain) being my #1 suspect. Distrubuter gear being #2. |
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Gremlin Dreams
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BassBoat
AMC Addicted Joined: Aug/29/2008 Status: Offline Points: 1714 |
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I agree with Skeown. Pull the plugs. Your points probably closed due to wear and then you cranked it until you fouled the plugs. You can check timing issue by putting the timing marks at 10 degrees or so, and then pulling the distributor cap. Rotor should aim in the general direction of either #1 or #6 spark plug wire.
BB |
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rockAMX
AMC Addicted Joined: Sep/16/2011 Location: Lethbridge AB Status: Offline Points: 983 |
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Points and condenser if you don't have electronic ignition. Also if you have a yellow wire going to the starter relay on the firewall, check that it has continuity to the positive wire at the coil. I forgot to plug mine into the starter relay once and I encountered the same problem you have.
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DWR
1968 AMX |
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Slate
AMC Addicted Joined: Feb/28/2012 Location: Airyzona Status: Offline Points: 2783 |
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No, a '74 doesn't. It looks like the cars I have started had rear pumps or some other solid connection between drivetrain and engine (semi-auto Beetle with clutch and converter or an AMX with a Clutchflite) and a '72 XJ6 with a variation of the BW M-35 with front and rear pumps. It sounds like the motor is cranking fast enough or the spark isn't strong enough which bump starting overcomes usually. Steve
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AMXFSTBK390
AMC Addicted Joined: Oct/22/2013 Location: SF Bay Area Status: Offline Points: 3489 |
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As I have explained to my son, when deducing a problem start with the easiest, then cheapest things first. Well it sounds like that has been done, except for replacing the spark plugs I had a stock sbc that wouldn't start. Replaced the plugs and it started. Hopefully new plugs will be the fix here.
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Questions are powerful tools...what's in your toolbox?
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Rogue401
AMC Addicted Joined: Nov/26/2010 Location: New York Status: Offline Points: 1279 |
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THe first and easiest thing I do with something like this is pull the number 1 plug and crank it with your finger over the hole. Stop it as close to top dead center as you can and check to see if the rotor is pointed at the number one terminal on the distributor cap. That would point you in the direction of a timing problem.
I have had the brass contact on the rotor rotate when a locating tab on the rotor broke.
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