Vacuum advance on G16A engine, something odd

[Agustin Alfonso Cesar Charles]

In short: it advanced too quickly.

The long:
So, apparently after talking to google, officially my engine doesn´t have the right distribuitor installed. To be true the cap and the rotor are from a Mitsubishi Lancer, sort of. And there are like 3 models available that fit the engine, but I don´t that´s the real problem.

The problem is, after the carburetor swap, my engine had that dreaded lean stumble of idle. Got my basic timing on 6 degrees as the manual said (doesn´t say anything about vacuum timing, just initial. Also using the static timing method, since I don´t have a timing light, DO REMEMBER I do not live in the US, so poor man´s methods here…) and the engine ran better, until I discovered that my vacuum advance unit had a broken diaphragm, well both of them (ported and manifold).

After searching locally, then globally, I found that the Ford Festiva has a vacuum advance that FITS and is the one that I am actually using,
(Vacuum advances on Nardek Australia) NVA-453, the problem is that the one that actually looks exactly like the one my car had is NVA-454 and apparently is the one I need. Right now I was able to fix the vacuum timing by using a long screw that would actually stop the ported vacuum from further advance or no advance at all, and (I can see the rod moving inside the dizzy as the engine revs) I see that the manifold vacuum and the ported vacuum do not move, I know that they are under vacuum since if I remove the vacuum lines, the engine speed decreases and the rod moves down (yep, checked for leaks and apparently everything is fine).

The thing is, with the car running good, the car in the best lean idle, could it be that the engine is running over lean and the vacuum advance be normal and I am just pinging from being lean? The off idle stumble is almost gone, or not noticeable at all, and the car does pull better now, and in the morning it starts better, even running colder if I recall.

What is happening then? Honestly, it doesn´t feel slow or weak, but there is some point between 1500 and 2000 on part throttle that I feel like there should be more power, not much but like something missing.

Topic

[college man]

I take it we are talking about a 1995 suzuki swift as stated below?
Is this engine original to the car? Did you convert this car to carb
when it was epi? Just trying to get a handle on whats been done?

http://en.wikipedia.org/wiki/Suzuki_G_engine

[Author]

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