|
Sponsored Links (Register now to hide all advertisements) |
|
|
Thread Tools | Display Modes |
10-20-2019, 07:16 PM | #1 |
Junior Member
Join Date: Aug 2019
Posts: 22
|
Model A backfire, can't move
Still new to Model A's, and am having an issue, so I thought I would check with you guys to see if there is an obvious answer. I drove the car today on a little trip about 50 miles each way. Ran good until I was a couple of miles from home, and it started to sputter, and then backfire. It finally got so bad, that I had to pull it home. I had just put the manifold back on with a new gasket after having it planed. I had adjusted the points to .20, and put in new plugs and a coil. To me, it is acting very lean, but I have fuel at the carb and the glass in line filter is full. Is it ignition? I did notice when I adjusted the points, that they seem too closed. I had to open them up to get to .20. Could the points be bad? I am not very good with ignition either! Thanks in advance.
|
10-20-2019, 07:31 PM | #2 |
Senior Member
Join Date: May 2012
Location: Big Pine,CA
Posts: 161
|
Re: Model A backfire, can't move
did you have the gav open enough to get enough fuel in the carb
|
Sponsored Links (Register now to hide all advertisements) |
|
10-20-2019, 08:25 PM | #3 |
Senior Member
Join Date: Sep 2010
Location: michigan
Posts: 1,126
|
Re: Model A backfire, can't move
I believe you might have a bad condenser cheep fix it just happens
|
10-20-2019, 08:28 PM | #4 |
Senior Member
Join Date: May 2010
Location: Alabama
Posts: 8,099
|
Re: Model A backfire, can't move
I'm wondering if the problem is modern points and condenser
The foreign condensers that most offer for use with V8 points are not very reliable I notice that the list of parts that you replaced doesn't include the condenser . My guess is a bad condenser . |
10-21-2019, 05:08 AM | #5 |
Senior Member
Join Date: Dec 2013
Location: Mossel Bay, about 300km from Cape Town
Posts: 530
|
Re: Model A backfire, can't move
Have you retorqued the manifold?
__________________
Regards Chris Cape Town 28 Model A RPU, 29 Chevy Phaeton, 67 E Type FHC, 67 250SL Pagoda, 83 911 SC |
10-21-2019, 05:32 AM | #6 |
Junior Member
Join Date: Aug 2019
Posts: 22
|
Re: Model A backfire, can't move
Sponsored Links (Register now to hide all advertisements)
|
10-21-2019, 05:43 AM | #7 |
Senior Member
Join Date: May 2010
Location: Largo Florida
Posts: 7,225
|
Re: Model A backfire, can't move
You'll probably have to go to a Model A site to get your parts, especially if they are original type points/condenser. Modern type points/condenser are Ford V8 and could be bought/ordered from a good parts store. [ get the expensive ones].
My original thought was fuel delivery, did you try opening the fuel cap ? It could be a venting issue. Actually it could be several issues, which have been covered. |
10-21-2019, 07:06 AM | #8 |
Senior Member
Join Date: Jun 2013
Location: Marana Arizona
Posts: 1,776
|
Re: Model A backfire, can't move
Had a similar adventure and found that my gas cap vent wasn't working. This will cause the car to backfire, sputter and stop because fuel cannot flow due to a vacuum condition in the fuel tank.
When this happens open your gas cap and if you hear a "swish" of air it is plugged. Put the cap back on loosely and drive home. I was 50 miles from home and it ran well all the way back. You can use a small piece of wire to determine if the vent in the cap is clear. I also drilled another hole in mine just in case... Chap |
10-21-2019, 07:20 AM | #9 |
Senior Member
Join Date: May 2010
Location: Stuart Florida
Posts: 148
|
Re: Model A backfire, can't move
Check the water in the radiator. It’s may have overheated.
|
10-21-2019, 09:45 AM | #10 |
Senior Member
Join Date: May 2010
Location: Epping N.H.
Posts: 2,987
|
Re: Model A backfire, can't move
Is there a main fuse in the system? If you are running a stock generator and cutout,and that blows,the generator will put out up to 40 volts,that will give you some pretty spectacular backfires.
|
10-21-2019, 10:06 AM | #11 | |
Senior Member
Join Date: Jun 2014
Location: Land of Lincoln
Posts: 3,129
|
Re: Model A backfire, can't move
Quote:
__________________
Don't force it with a little hammer tap, tap, tap get a bigger hammer tap done |
|
10-21-2019, 06:52 PM | #12 |
Junior Member
Join Date: Aug 2019
Posts: 22
|
Re: Model A backfire, can't move
I did take the plug out of the bowl. I had fuel flowing steady there. I did not check the cap, but I will try that as well. Wish I didn't have to work so I could do more on it!
|
10-22-2019, 01:59 PM | #13 |
Senior Member
Join Date: May 2010
Location: new britain,ct 06052
Posts: 9,390
|
Re: Model A backfire, can't move
Funny how "work" gets in the way of our personnel lives, even when retired.
Paul in CT |
10-22-2019, 04:47 PM | #14 | |
Senior Member
Join Date: Feb 2011
Location: Lincoln, Nebraska
Posts: 1,908
|
Re: Model A backfire, can't move
Quote:
__________________
Dave / Lincoln Nebraska |
|
10-22-2019, 05:48 PM | #15 |
Junior Member
Join Date: Aug 2019
Posts: 22
|
Re: Model A backfire, can't move
Thank you. Not totally sure I follow, but I will check it out. Especially if the points are off again. I did order points and condenser for it as well.
|
10-22-2019, 07:36 PM | #16 |
Senior Member
Join Date: Feb 2011
Location: Lincoln, Nebraska
Posts: 1,908
|
Re: Model A backfire, can't move
Sorry I didn't explain that too clearly.
Basically if the contact point that screws in and out of to make the adjustment can't be clamped down on hard enough to hold it in place you will need to remove some material in the slot of the part that holds it to give it more room to squeeze down on it. Clear as mud I'm sure.
__________________
Dave / Lincoln Nebraska |
10-23-2019, 10:54 AM | #17 |
Senior Member
Join Date: Jun 2015
Location: Red Deer, Alberta
Posts: 5,043
|
Re: Model A backfire, can't move
I had a problem w/a new B distributor cam that had a rough surface and wore the points rubbing block down quite quickly. I never thought to inspect the cam when I installed it, just assumed it was as smooth as it should have been.
__________________
If you don't hear a rumor by 10 AM, start one!. Got my education out behind the barn! |
10-23-2019, 11:05 AM | #18 |
Senior Member
Join Date: May 2010
Location: Alabama
Posts: 8,099
|
Re: Model A backfire, can't move
Stipe machine offers the best and most acurate distributor cam on the market for the model A and B engines .
|
10-23-2019, 05:04 PM | #19 |
Senior Member
Join Date: May 2010
Location: Largo Florida
Posts: 7,225
|
Re: Model A backfire, can't move
If this monster still won't start I'd suggest a compression check. I'm wondering if a back fire happens to damage the cam gear.
|
10-24-2019, 05:45 AM | #20 |
Junior Member
Join Date: Aug 2019
Posts: 22
|
Re: Model A backfire, can't move
I was actually wondering about that cam gear, because I had to open up the points to gap them. I was wondering if it was wearing down. I just need to get in the shop! Stupid work!
Thanks again for the ideas |
|
|
Sponsored Links (Register now to hide all advertisements) |
|