Electronic mopar ignition? Can be a pick up coil.
67 Fury 440 Engine Problems
- Thread starter SportFury70
- Start date
SportFury70
Senior Member
There is an electronic pump also. Would you happen to know where we could get a cheap guage, Harbor Freight perhaps?
SportFury70
Senior Member
Yes sir it is a Mopar Performance electronic ignition, but we already tried the coil and still nothin'
They have a fuel pressure/vacuum gauge for $15
SportFury70
Senior Member
Perfect thanks for the info, but how accurate will it be? It actually might work out if we get one of these because I most likely need this for my daily driver too
He's referring to the coil in the distributor. That's a good possibility but you've tried different distributors (?), so I'd say that's not it.
Accurate enough to see if you have fuel pressure or not when it gets warm. What you are looking for is not necessarily a number... It's to verify there is pressure which means there is fuel flowing.
John, This 520" stroker was built by the same shop that built my 520" stroker. Sadly the owner passed away suddenly a few years back. As noted, the engine builder set the timing chain for the roller cam at 2 degrees advanced. This engine has 440 source massaged aluminum heads, aluminum intake and a roller cam whereas I do not have those in my engine but the bottom ends are the same. It was built to be a torque monster since it was going in a '67 Fury.
Different mechanical high performance fuel pumps were tried and an electric fuel pump was added (I did that with the electric pump being what I refer to as a "pusher"). I don't know if he checked fuel pressure but that was one thing that I was thinking about as well. With my set up I have a fuel pressure regulator in line before the mechanical pump.
Different mechanical high performance fuel pumps were tried and an electric fuel pump was added (I did that with the electric pump being what I refer to as a "pusher"). I don't know if he checked fuel pressure but that was one thing that I was thinking about as well. With my set up I have a fuel pressure regulator in line before the mechanical pump.
Eric, is there a fuel pressure regulator installed between the electric pump and the mechanical pump? That is what my car has.
Yea, the cam advance kind of caught my attention, but I don't know as it would cause this issue. I guess I would question it, but then again, I'm not familiar with the cam in the car etc.
The fuel flow... That could be a big one. Having tried different pumps says that chances are, it's not a pump, but we all know there are other things that can happen.
Ripinator
Old Man with a Hat
65Fury440
Senior Member
2 questions-
When it stalls, does it get gas through the carb squirters?
When it stalls, does the coil produce a spark?
It should be really easy to get this problem diagnosed, and in about 5 minutes once the engine stalls.
You can hypothesize all day long, getting out under the hood should get you going in the right direction.
When it stalls, does it get gas through the carb squirters?
When it stalls, does the coil produce a spark?
It should be really easy to get this problem diagnosed, and in about 5 minutes once the engine stalls.
You can hypothesize all day long, getting out under the hood should get you going in the right direction.
69 300 vert
Well-Known Member
You HAVE checked the fuel pickup and related hoses for deterioration and or drawing air?
SportFury70
Senior Member
No there is not one
SportFury70
Senior Member
To answer the first part of your question we believe it does, the 2nd part of your question yes the coil does produce spark when stalled.
SportFury70
Senior Member
Everything is new and clamped so that should not be it
70bigblockdodge
Old Man with a Hat
I'm still leaning towards ignition.
We need some info.
What is the timing
1000 rpm
2000 rpm
3000 rpm
Vacuum advance disconnected.
Inches of Hg vacuum at idle.
When was the electronic ignition purchased.
I do believe it's in your ignition. I know there have been 3 dist in there, but I would really like to see it with a completely different ignition. Like, throw a old stock points distributor in. Beyond that you need to check voltages and ohm readings when hot and problem is happening.
With 2 fuel pumps I seriously doubt it is a fuel problem. Especially when Mark V runs strong 1/4 mi with only a mechanical. Would not hurt to check fuel pressure.
We need some info.
What is the timing
1000 rpm
2000 rpm
3000 rpm
Vacuum advance disconnected.
Inches of Hg vacuum at idle.
When was the electronic ignition purchased.
I do believe it's in your ignition. I know there have been 3 dist in there, but I would really like to see it with a completely different ignition. Like, throw a old stock points distributor in. Beyond that you need to check voltages and ohm readings when hot and problem is happening.
With 2 fuel pumps I seriously doubt it is a fuel problem. Especially when Mark V runs strong 1/4 mi with only a mechanical. Would not hurt to check fuel pressure.
I think it's gonna come down to spark or fuel. It wouldn't surprise me if it was one or the other... or even both for that matter.
What needs to happen is that they have to be eliminated, one by one. If you have fuel pressure, that eliminates the fuel pumps and line. Not having spark will tell you it's ignition, plain and simple. Of course, you can still have spark and a timing problem but that's another story.
You have said it has spark when it stalls, so that means the ignition has some function. Do the fuel pressure test and then we can go down the ignition rabbit hole.
What needs to happen is that they have to be eliminated, one by one. If you have fuel pressure, that eliminates the fuel pumps and line. Not having spark will tell you it's ignition, plain and simple. Of course, you can still have spark and a timing problem but that's another story.
You have said it has spark when it stalls, so that means the ignition has some function. Do the fuel pressure test and then we can go down the ignition rabbit hole.
68PK21 440.6bbl
Old Man with a Hat
Geeez 1 year later and it's sounds like your back to post #1.
Why not stick a wide band A/F meter in the exhaust and see what is going on so you aren't guessing? You will then have some important data. If you have dual exhausts run two of them and see. They are rather cheap these days compared to the ones I used 20 years ago.
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