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07-09-2015, 12:55 PM | #1 |
Junior Member
Join Date: Dec 2014
Location: Hermann, MO
Posts: 19
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timing & starting problems
I have a 51 or 52 Merc v-8 Flathead that was put into a 46 Ford coupe when I bought it. It had not run for a while, it had a stuck valve which I got freed up and runs pretty smooth now. However, it will not start unless I have the timing Advanced (distributor rotated clockwise quite a bit). It will fire up and of course not run too smoothly, I set the timing at top dead center on the crank pulley. It runs real smooth, no misses, everything sounds great, until I shut it down. It will not start up again unless I advance the timing as I did in the beginning. I have new plugs, cap, rotor, same points and condenser, points set at 14-16. Fuel supply is okay, new fuel pump, rebuilt carb. I cannot figure out why it won't fire back up with the timing set correctly. I have replaced the vacuum advance on the distributor. Does anyone have any ideas, solutions to this problem. I was going to switch out the distributor? Not sure if that would fix the problem.
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07-09-2015, 01:28 PM | #2 |
Senior Member
Join Date: May 2010
Location: NorCal
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Re: timing & starting problems
If your engine has the "Loadamatic" distributor, I'd bet that's your problem.
But I'm not familiar with whatever distributor you may have |
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07-09-2015, 01:39 PM | #3 |
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Join Date: May 2010
Location: Coral Springs FL
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Re: timing & starting problems
Did you plug the vacuum advance line on the distributor when you set the timing? Did you reattach that line to the correct port after you timed the engine?
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07-09-2015, 01:40 PM | #4 |
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Location: Mid coast Maine
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Re: timing & starting problems
When the pointer is on mark make sure the rotor is on #1 you don't want to be 180 out you are not.
The way the rotor should be if the cap is marked #1 the rotor should be at 6 o'clock. Place the dist in middle of limit of movement. Start up and turn till it runs the best and back off little then try it don't use the light. |
07-09-2015, 03:18 PM | #5 |
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Join Date: May 2010
Location: SPEEDWAY INDIANA
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Re: timing & starting problems
Some confusion ???
The 51-52 engine would use a loadamatic distributor . You are timing using the pointer and thats good but that also tells us its the vac only distributor. SO from that point like Kahuna said the problem is in the distributor. The vac may or may not be working etc, May not be returning to the mark and may not have the correct vac applied to it. They are also bad to short out the lead wire under the plate. I would rebuild the distributor or switch it over to a full mechanical unit etc.... |
07-09-2015, 09:40 PM | #6 |
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Join Date: Dec 2014
Location: Hermann, MO
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Re: timing & starting problems
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07-09-2015, 10:23 PM | #7 |
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Join Date: May 2010
Location: Coral Springs FL
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Re: timing & starting problems
46Ford; Call Bubba's Ignition. He will give you the best advice.
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07-09-2015, 10:39 PM | #8 |
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Join Date: May 2010
Location: NorCal
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Re: timing & starting problems
I have replaced the vacuum advance on the distributor.
Did you replace with correct diaphram for the loadamatic? |
07-10-2015, 12:03 AM | #9 |
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Join Date: Jul 2011
Location: Ft. McMurray, Alberta
Posts: 21
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Re: timing & starting problems
Had a shop where we did a lot of tune ups, o/h distributors on all. Many times on Fords, the lead was broken inside the rubber insulation where it flexes most. Connection would make and break at random, causing very erratic starting and running. Just an old thought.
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07-10-2015, 09:45 AM | #10 |
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Join Date: May 2010
Location: SPEEDWAY INDIANA
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Re: timing & starting problems
OK, heres what i think has happened.
You set the timing with the vacuum line connected and the advance was pulled out to , lets say 15-16 degrees and you adjusted that to zero on the pointer ( 2-4 degrees). Then when engine is shut off the advance comes down to zero ( which is now 15-16 degrees retarded ) and the engine dont want to start at that setting. Unhook the vac unit line plug and adjust the timing, tighten down and then hook up the vacuum........ Make sense ?????????? |
07-10-2015, 08:32 PM | #11 |
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Location: MN
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Re: timing & starting problems
To add to bubbas post as a tinkerer of things.
Any vac advance dizzy, you need to set initial timing first. That does require that you do remove the vacuum line and setting the timing at idle off a known tdc mark. That would be your idle or initial timing. Then hook the vacuum and check your timing as it revs. That will show if you have any vac advance to your system. Alterations to the vacuum input can effect the performance. Carberator changes, etc. Personally, I'd just talk to bubba about getting a points mech setup and take all the guess work out of diaphragms. Sometimes it's okay to go straight to go. Not that you can't go the other way either. I don't have a dizzy machine or the resources to set a dizzy up, so that's my opinion. |
07-10-2015, 08:52 PM | #12 |
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Join Date: May 2010
Location: capemaynewjersey
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Re: timing & starting problems
I think you have a BAD timing chain good luck
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07-10-2015, 08:53 PM | #13 |
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Location: MN
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Re: timing & starting problems
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07-10-2015, 08:56 PM | #14 |
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Re: timing & starting problems
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07-10-2015, 09:31 PM | #15 |
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Join Date: Nov 2014
Location: Shell Knob Missouri
Posts: 151
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Re: timing & starting problems
I think there is one push rod off.
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