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Discussion Topic:
Starting issue after car warm
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Parkopup1218 |
08-06-2020 @ 4:19 PM
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Member
Posts: 20
Joined: Dec 2018
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Thanks Superreal and others. I will give your suggestion a whirl. My new friend Tom O gave me some great advice. Stay tuned.
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supereal |
08-06-2020 @ 8:08 AM
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Senior
Posts: 6819
Joined: Oct 2009
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Thanks MG for posting my "quickstart" page. One thing to remember is that the circuit bypasses the ignition switch when activated, so disconnect one end of the circuit if you are planning to "bump" the engine during any under hood work. The engine will start and run as long as the start button is pushed. I posted the page years ago, and should have added this precaution at the time.
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MG |
08-04-2020 @ 6:33 PM
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Senior
Posts: 1261
Joined: Nov 2009
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supereal's quick start for old Fords Attached below >
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cliftford |
08-04-2020 @ 4:38 PM
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Senior
Posts: 845
Joined: Jan 2014
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The diode bypass that superreal mentions is the only way to go. run a wire from the starter side of the solenoid through a diode to the batt side of the coil. Sure saves wear and tear on the starter. I use one that is intended to replace the innards on an early ford generator cutout.
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supereal |
08-04-2020 @ 12:51 PM
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Senior
Posts: 6819
Joined: Oct 2009
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If, the starter gets hot from exposure to the exhaust manifold, it will lose power due to high resistance in the windings. Worn bushings will allow the armature to drag from contact with the pole shoes, as well. I use a diode booster on my'47 and other cars. If interested I will post the instructions again. Modern cars used to bypass ignition resistors to increase ignition power to aid starting by compensating for voltage drop.
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TomO |
07-23-2020 @ 9:41 AM
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Senior
Posts: 7256
Joined: Oct 2009
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It sounds like you may have 12 volt cables on your battery or you may have a bad ground. The 6 volt cables are at least 1/2" in diameter. You need to know how to use a voltmeter to check out the ground circuit. Ground circuit meter hook up and test: Connect the Black lead of the meter to the NEG post of the battery Connect the red lead of the meter to the case of the starter or one of its mounting bolts Operate the starter while observing the meter. The reading should be 0.1 volt or less. Higher readings can be cause by paint on the mounting surfaces of the starter, corroded ground strap or undersized (12 Volt) ground strap.
Tom
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37RAGTOPMAN |
07-22-2020 @ 4:54 PM
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Senior
Posts: 1963
Joined: Oct 2009
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was wondering if you have headers on the engine ? ON RS of engine the starter is very close to the exhaust and might be causing the starter to have problems., I just went though this on my 37, ended up wrapping the exhaust headers also I have in the past to check the coil if was causing problems with no or less spark, for HARD STARTING, I put a ICE PACK on the coil, wait 5 minutes and start the car, IT WORKS most of the time, good way of checking for ignition coil failure., hope this helps 1937Ragtopman
This message was edited by 37RAGTOPMAN on 7-23-20 @ 6:41 AM
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alanwoodieman |
07-22-2020 @ 2:35 PM
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Senior
Posts: 868
Joined: Oct 2009
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slower when warm--check out battery cable, make sure they can handle the start load generated by a hot engine. when you try to strat hot see if the cable to starter gets really hot--if so you need a bigger cable
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Parkopup1218 |
07-22-2020 @ 12:26 PM
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Member
Posts: 20
Joined: Dec 2018
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Hi Tom The starter is slower when warm. The carb was rebuilt by a local mechanic who specialises in old 40's and 50's
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TomO |
07-22-2020 @ 7:09 AM
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Senior
Posts: 7256
Joined: Oct 2009
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You checked the battery when you were having starting problems. I would like to know if your starter turns over the engine just as fast ho and cold or does it crank slowly when hot? I would also like to know who rebuilt your carburetor. To check for the condition that Alan spoke of, shortly after you stop the engine, remove the air cleaner and look down the throat of the carburetor, if you see fuel dribbling down into the carburetor, wait until the engine cools and remove the top of the carburetor and adjust the float so that the fuel level is 1/8" lower than its current level. This should not affect performance.
Tom
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