04-08-2020, 10:57 AM | #1 |
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Posts: 516
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Hard to start.
51 ford truck. Cranks easy when cold altering driving an turn it off after 10 min it just turns a lot before starting. It has an electrionic chip. Do I need to adjust carb.
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04-08-2020, 11:29 AM | #2 |
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Location: Southern Illinois
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Re: Hard to start.
A very well tuned and efficiently working ignition system is a must. All components of the ignition system need to function 100% to eliminate hard starts, from my experience. I run a traditional points system, Skip Haney rebuilt coil, new wiring also. My distributors have been set up on a Sun machine by both Bubba and Michael Driskell at Third Gen Automotive.
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04-08-2020, 11:30 AM | #3 |
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Re: Hard to start.
Does it have a coil, when they get hot they can fail.
You need to trouble shoot before you go adjusting stuff. Pick one either fuel,spark,compression, and trouble shoot each until you find the problem. |
04-08-2020, 11:44 AM | #4 |
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Re: Hard to start.
Sounds like the carb is over rich for some reason.
By cranks easy I suppose you mean starts easy. Try slowly opening the throttle before trying to start. slowly enough so you don't pump even more gas down there. Mart. |
04-08-2020, 12:26 PM | #5 |
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Re: Hard to start.
Can't help you when chips are installed. Stock is nice. G.M.
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04-08-2020, 02:58 PM | #6 |
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Re: Hard to start.
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04-08-2020, 03:46 PM | #7 |
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Re: Hard to start.
It is still 6 volt. I put the coil that is suggested for the electronic chip. Starts an runs great when cold an when you stop for 5 min just touch the button an it fires right up. but if you are 15 min it turns a lot before starting. Then it runs great. I have moved timing an adjusted carbutor still the same.
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04-08-2020, 03:54 PM | #8 |
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Re: Hard to start.
Does it fire up better if you open the throttle?
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04-08-2020, 05:18 PM | #9 |
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Re: Hard to start.
It is the same if you give it gas easy or continue to give it gas. Still spines a lot before starting.
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04-08-2020, 05:28 PM | #10 |
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Re: Hard to start.
Jerry Tyi a little gas down the carb ,see if its drain back, OK not that ,does it puff smoke out the pipe when finial fires
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04-08-2020, 07:09 PM | #11 |
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Re: Hard to start.
I presume you are running Pertronix ignition, which has a good reputation on 12 volts and has been very reliable on my 12 volt flathead. But Pertronix has a less reliable record on the 6 volt version. Solid state electronics get flakey if they get too hot. So starting and running with the distributor directly in the fan breeze may keep the 6 volt unit running fine. But sit for a while with no cooling and the engine heat transfers to the distributor to the point that the ignition fails. Just a theory!
This theory can be tested. Run till the engine is hot. Shut down and immediately check the spark to see if it will jump half an inch with a blue spark. Then wait 15 minutes and check it again to see if the spark is weak, like yellow spark will barely jump a quarter inch. It that is the case, swap out the Pertronix to get a more reliable unit, or go back to points. |
04-08-2020, 07:23 PM | #12 |
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Re: Hard to start.
That sounds similar to a problem I once had with excessive gas leak down from carburator into intake manifold caused by a faulty power valve, or PV seal.
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04-11-2020, 08:45 AM | #13 |
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Re: Hard to start.
get rid of the electronic stuff
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04-11-2020, 10:26 AM | #14 |
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Re: Hard to start.
From everything I have seen and heard, aftermarket electronic ignition systems have caused more problems than they have solved.
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04-16-2020, 03:36 AM | #15 |
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Re: Hard to start.
Agreed .The more I go on the more I realize that most modern improvements aren't improvements at all !
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