New 75 power wagon owner

lostboy03 · Dec 29, 2013

Hello,

I am a new Power Wagon owner. I recently purchased a 1975 with a 360 cid engine and 4 wheel drive. I have a couple of questions: one, I will start to work the timing on the engine and get it advanced to about 8 degrees. When I secure the distributor I will check the timing again. It is where I want it and after a few second the timing will advance itself to where I cant see the timing mark. Please help. Also if anyone has the same vehicle as me can you please take pictures of your vacuum system for me. I am chasing what I thing is a vacuum leak and those pics would help immensely.

White Beauty · Dec 29, 2013

Pics. Or no answers. Hahah

Sent from my SGH-I747M using Tapatalk

NYCruiser · Dec 29, 2013

If you are having vacuum problems, the timing issue is probably involved.
Check out the vacuum advance on the distributor. Its usually connected to a ported vacuum connection on the carburetor. If it is connected to manifold vacuum you will get constant advance whenever there is vaccum present.
As I recall, we used to disconnect and plug the vacuum advance line with a bolt when setting the timing on these.
There is a diaphram inside of it that can leak and cause vacuum problems too.

Edit - would love to see a pic!

NYCruiser · Dec 29, 2013

Some interesting info here:
Tuning Tips » dodgetravcos.com - Long Lasting Dodges

PCA4208 · Dec 29, 2013

Yeah vacuum advance need to be plugged before adjusting the advance. NYCruiser is also correct that it needs to be routed to a ported manifold vacuum. I think the timing would need to be at 15 BTDC, at least thats what the underhood tag on my 79' says. But if it runs good at 8, then thats fine.

WhiteExpress · Dec 29, 2013

Well, I'm excited to see pictures.
Sounds like everyone has already stated to disconnect the vacuum line.

lostboy03 · Dec 29, 2013

It seems like the distributor is advancing with an rpm advance but the engine is staying at idle.

Brakelate · Dec 29, 2013

You sure it is a stock vacume activated advance? Seems very likely over the years that someone might throw in an performance unit with a mechanical advance or even a electronic one.

Internal spring could go in that case, or someone buggered it all up to start with before you got there so bad that finding a baseline to begin with is difficult?

PCA4208 · Dec 29, 2013

Does it have a 2 barrel on it? Or a 4 barrel.

lostboy03 · Dec 30, 2013

4 barrel.

PCA4208 · Dec 30, 2013

Is this what the front of the carb looks like? If so these are your vacuum ports.

lostboy03 · Dec 30, 2013

No. It is an after market carb. An edlebroc or carter I belive. I will try to take a picture of it tomorrow.

PCA4208 · Dec 30, 2013

Ok. That will help a lot.

dodge dude94 · Dec 30, 2013

Does your carb look like this?

If so that's the Carter Thermoquad, should have been stock on that engine in 75.

lostboy03 · Dec 30, 2013

20131230_050145_LLS_zps3e0tuveo.jpg.html

There it is. It looks like the stock 4 barrel carter and has an electric choke.

If the photo dosnt work out here is the web adress:http://s1315.photobucket.com/user/j...t=3&o=0&_suid=1388411472089031379542179310204

lostboy03 · Dec 30, 2013

I am starting to think that a new distributor would fix the problem as stated befor. Any thoughts?

dodge dude94 · Dec 30, 2013

The picture you posted looks more like a Rochester Quadrajet, but upon looking on google, I don't think it is. lol
Not sure what that carb is, unless it's a different variant of the QJ.

And it's quite possible a new dizzy will fix it, but did you do the timing again with the vacuum advance unplugged or what?

lostboy03 · Dec 30, 2013

I did the timing unpluged, pluged and pluged with a screw just to cover all bases.

PCA4208 · Dec 30, 2013

That carb looks like an Edelbrock carb. Based off the quadrajet. Quick google search can help witht he vacuum routing.

PCA4208 · Dec 30, 2013

On the distributor, have your checked the magnitic pickup for air gap or if its loose? if its loose, it could mess up timing to a point.

New 75 power wagon owner

Junior Member

Senior Member

Senior Member

Senior Member

Senior Member

Senior Member

Junior Member

Senior Member

Senior Member

Junior Member

Senior Member

Attachments

Junior Member

Senior Member

Millennial Boomer

Junior Member

Junior Member

Millennial Boomer

Junior Member

Senior Member

Senior Member

Similar threads

Forum statistics

Share this page