|
Sponsored Links (Register now to hide all advertisements) |
|
|
Thread Tools | Display Modes |
02-02-2020, 07:25 PM | #1 |
Senior Member
Join Date: Jun 2014
Location: New Jersey
Posts: 1,772
|
Out of ideas - need help
If you read my last post - 39 coupe - you know my car is not well and will not start. The last time is ran in garage (thus am) at idle it ran for 5-10 minutes and stalled. Prior to that car was bucking bad on a short ride.
So far: Took both edlebrok 94s (Charlie rebuild few years ago) off cleaned all ports with carb cleaner and blew out with air. There was some dirt particles in carb prior but cleaning did not solve issue of no start. I tried 3 different coils and 3 different condensers. I currently have on a Skip built coil. I replaced the ignition switch. When testing coil I’m getting 3.5-4 volts while cranking I pulled the distributor and replaced the points (.015 gap- no machine) and condenser with NOS parts. Tried to start and car cranks well it is backfiring thru exhaust but will not start. Note after installing points and no start. I had spark on number one plug on an initial crank but then no spark. I’m taking a break from it, as it’s wearing me down.
__________________
Thanks Andy 1952 F1 Last edited by adileo; 02-02-2020 at 09:11 PM. |
02-02-2020, 07:38 PM | #2 |
Senior Member
Join Date: May 2010
Location: Masterton, New Zealand
Posts: 3,829
|
Re: Out of ideas - need help
Rotor shorted
__________________
Unfortunately, two half wits don't make a whole wit! |
Sponsored Links (Register now to hide all advertisements) |
|
02-02-2020, 07:47 PM | #3 |
Senior Member
Join Date: Jun 2014
Location: New Jersey
Posts: 1,772
|
Re: Out of ideas - need help
Sorry forgot that...when changing points put in new rotor.
6v pos grd Helmet distro (bubba 11a)
__________________
Thanks Andy 1952 F1 |
02-02-2020, 09:12 PM | #4 |
Senior Member
Join Date: May 2010
Location: Alabama
Posts: 3,257
|
Re: Out of ideas - need help
Condenser
|
02-02-2020, 09:19 PM | #5 |
Senior Member
Join Date: Sep 2011
Location: Christchurch New Zealand
Posts: 1,610
|
Re: Out of ideas - need help
It was suggested to:
check the coils: Primary & Secondary sides. Get hold of a spark plug tester and you will be able to check each cylinder for a good spark Just remove air cleaner and operate carb to check fuel flow. You have swapped out a few different elements and it kinda makes fault finding a little tricky. My policy in these cases is check again what you last played with as quite often a fault is introduced. hope you work through it. Phil NZ |
02-02-2020, 09:22 PM | #6 |
Senior Member
Join Date: Jun 2014
Location: New Jersey
Posts: 1,772
|
Re: Out of ideas - need help
Sponsored Links (Register now to hide all advertisements)
Please help me better understand how to test the primary and secondary on a helmet coil.
__________________
Thanks Andy 1952 F1 |
02-02-2020, 09:25 PM | #7 |
Senior Member
Join Date: May 2010
Location: Kerrville, Tx
Posts: 2,769
|
Re: Out of ideas - need help
No power to the coil?
|
02-02-2020, 09:34 PM | #8 | |
Senior Member
Join Date: May 2010
Location: MN
Posts: 7,053
|
Re: Out of ideas - need help
Quote:
Even if you bench test it, it may not preform the same under a hot condition. Thought you had this running well under idle, but was bucking under load? Intermittent spark on the 1 seems like something with the rotor. Add a additional engine ground. Never enough grounds. . |
|
02-02-2020, 09:43 PM | #9 |
Senior Member
Join Date: Dec 2013
Location: Minnesota, Florida Keys
Posts: 10,303
|
Re: Out of ideas - need help
How old is the engine? IF it's not a recent rebuild, I would suspect a few stripped teeth on the fibre timing gear.
|
02-02-2020, 09:49 PM | #10 |
Senior Member
Join Date: May 2010
Location: MN
Posts: 7,053
|
Re: Out of ideas - need help
Not sure why you created another thread other then a fresh look or less info.
from the other thread... "It's pretty easy to see if the resistor is working with a volt meter. Cold and hot." What's your vacuum look like. Just throwing out some ideas that might help. . |
02-02-2020, 10:04 PM | #11 |
BANNED
Join Date: May 2010
Posts: 3,019
|
Re: Out of ideas - need help
AD,
Try a jumper across the posts of the column mounted ign switch or a wire directly from the battery to the coil. I've experienced night mares with the repop condensers and adapt IH 200 condensers with excellent results. That backfire thing sounds like timing. Send me the distributor while you are on break ,if you wish. Charlie ny |
02-02-2020, 10:15 PM | #12 |
Senior Member
Join Date: Oct 2011
Location: Shelton, WA
Posts: 3,799
|
Re: Out of ideas - need help
Bad condenser can make backfires.
|
02-02-2020, 10:19 PM | #13 |
Senior Member
Join Date: May 2010
Location: MN
Posts: 7,053
|
Re: Out of ideas - need help
and misfires.
|
02-02-2020, 10:47 PM | #14 | |
Member Emeritus
Join Date: Nov 2012
Location: Wichita KS
Posts: 16,132
|
Re: Out of ideas - need help
Quote:
Adileo, have you really checked all of the ground connections to be sure they are clean and tight? Might even try an additional ground from the engine to the battery. Try clipping the voltmeter on the coil and see if it is still reading 3.5/4.0 volts when it starts to act up. And try Charlie's idea with the jumper again, you have to be missing something somewhere along the line. Put a temporary fuel pressure gauge on it. Think it might be time to start trouble shooting the problem in place of changing parts. Last edited by JSeery; 02-03-2020 at 10:47 AM. |
|
02-02-2020, 11:04 PM | #15 |
Senior Member
Join Date: May 2010
Location: MN
Posts: 7,053
|
Re: Out of ideas - need help
do one thing at a time. If you haven't put vacuum on it, that will help.
Last edited by Tinker; 02-02-2020 at 11:10 PM. |
02-03-2020, 07:21 AM | #16 |
Senior Member
Join Date: Jun 2014
Location: New Jersey
Posts: 1,772
|
Re: Out of ideas - need help
Ok thanks for all the good advise. I haven’t done all this at once and have tried each after doing the work on each.
Today: Check again for fuel going into carbs. All the grds are clean but I’ll add more. Also when it was running, I turned off the battery (I have a switch on grd strap) and car continued to run Test voltage at coil again. I’m still in the dark on one suggestion on testing primary and secondary. Test each spark plug for spark. Last tested number one had spark then no spark.
__________________
Thanks Andy 1952 F1 |
02-03-2020, 09:15 AM | #17 |
Senior Member
Join Date: Jun 2014
Location: New Jersey
Posts: 1,772
|
Re: Out of ideas - need help
3.5-4 to coil
Spark on all plugs - have to touch wire to plug to see spark Backfire thru exhaust no start
__________________
Thanks Andy 1952 F1 |
02-03-2020, 09:32 AM | #18 |
Senior Member
Join Date: Dec 2014
Location: Miami Oklahoma
Posts: 535
|
Re: Out of ideas - need help
Compression test to verify cam timing.
__________________
Tommy |
02-03-2020, 09:33 AM | #19 |
Senior Member
Join Date: Jun 2014
Location: New Jersey
Posts: 1,772
|
Re: Out of ideas - need help
Retest now no spark to plugs.
__________________
Thanks Andy 1952 F1 |
02-03-2020, 09:34 AM | #20 |
Senior Member
Join Date: Jun 2014
Location: New Jersey
Posts: 1,772
|
Re: Out of ideas - need help
Retest now no spark to plugs what’s that tell me?
__________________
Thanks Andy 1952 F1 Last edited by adileo; 02-03-2020 at 09:52 AM. |
|
|
Sponsored Links (Register now to hide all advertisements) |
|