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Could be both actually. I’m sure HEI had nothing to do with it. :D

The other day I got the 72 Dart ready for anytime driving duty since it has always been registered and insured but almost never driven. I noticed a miss that wasn’t there before and tracked it down by inserting a test light between the wires and caps on the distributor. Yep, cylinder number 5. I...

Also note that the contact between the actual bulb socket and housing are two different pieces and corrosion between the two metals can cause a loss of ground to the bulb. If you look close you can see the parting line between the two. I have solved this problem by drilling and putting a small...

Don’t miss the fact that the ground cable could have a bad crimp on the end. For diagnostics use a jumper cable from the battery negative to the block. Then the other cable from the block to body.

Think about this guys. If a high beam bulb filament is being used as a ground path it could cause the high beam indicator to be lit. I’ll place my money on a ground issue at the radiator support if it’s not actually a filament, but I believe a filament touching would cause the indicator on the...

Did you check the voltage when it makes the whirring sound? That usually means it’s putting out a lot of voltage. The current problem sounds like the regulator is garbage. New doesn’t mean good.

I had a friend doing a first start on a brand new built 440. It wouldn’t rev past about 1,200 and missed real bad. It also ran super rich with black smoke pouring out the exhaust. They wanted to try another known good carb, but it made no difference. When I got there I noticed the distributor...

Just put your radio on a switch so you have power to it constantly. That way when the switch is on you can listen with zero draw from anything else. And when the switch is off it’s definitely off. I put one right next to the lighter in the ashtray compartment. It switches the stereo and the...

I also mentioned the possibility of mechanical advance springs being damaged and letting the flyweights bounce around.

Is it possible that vacuum advance is coming in early enough to cause this? I assume you are disconnecting it when checking timing. Mechanical advance can also do this if you have a broken advance spring or two.

This description is exactly how a backwards wired distributor pickup coil acts when the wires get switched. In that case the spark is not aligned with the contacts on the distributor cap, and reving it makes it worse. It causes backfires and plugs loading up.

Tractor Supply carries that also, along with the solder on lugs. The smaller black cable goes to the radiator support.

Not always, but 1-2 cylinders on occasion.

Without the AC on about 900. With it on it drops to 750 or so.

Tried that and it didn’t seem to make any difference.

I just said up there ^ I didn’t want to do that.

Now that my car has AC I have to have the idle rpm a little higher. Problem is when I shut the engine off it tends to “run on” for a few cylinder fires, which I really don’t like because it’s hard on cam gears and such. (Especially when the engine kicks backwards) I realize there is idle...

Just in case. Your switch on the dash has to be grounded for them to work.

I recently had a problem exactly like you described. Ended up being a bad pickup. That doesn’t explain both distributors doing it though.

That clears that up. Thank you for the effort you put into this. I appreciate it.

@67Dart273 Good morning. The instructions for the Classic Auto Air system says to connect both power leads to switched ignition. The system apparently draws up to 20 amps. I want to take that load off my key switch with a relay direct to the battery and realize I probably need a continuous use...

You do have heavy gauge cable from the battery negative to the block, right? Hope I’m not just asking a stupid question, but I have seen guys burn up a speedo cable by using body grounds only.

That sounds familiar.

Yes because I thought I didn’t do it this time.

I know it keeps the burning of the tip and cap contacts down from the HEI spark jump, but I’m pretty sure that’s not why they made it. Good question.

This is what happens when you use a Napa MO3000 rotor and don’t get your distributor cap back on exactly straight. :D The MO3000 rotor has a 030 longer tip.

Insulator

Hope you don’t have efi.:D

It’s connected to the hot side of the relay so it’s hot all the time in the cabin. It’s not a factory wire, so it may very well be from the old ignition system. If I’m not mistaken the MSD requires a constant hot wire and keyed power both. There are other aftermarket add ons that require a...

Oh I’m actually expecting that line. I’ll be surprised if they send me a new one, but I have basically written off my 80 bucks already. Believe it or not 80 was fairly low compared to most places. Thats why I got it from Holley. Yea you could get one from Walmart or whatever, but who knows...