[GeoMetron]

I have a '91 Geo Metro convertible that is in excellent physical shape. My old Geo Metro was so rusted that the front suspension started to become dangerously flexible. I got the new-to-me Geo from a dealer in Little Rock for a steal! I'm almost embarassed to say how little it cost me.

Anyway, the vehicle does have some mechanical problems. But hey, I've swapped engines in Suzuki Samurais, converted 2-wheel to 4 wheel drive, installed TBI fuel injection on a carb'd 1.3, and I figured that there "weren't nuthin' wrong wid it dat I cain't fix."

Well, I'm stumped.

I've replaced the engine mounts, rented a timing light to properly time the thing (though I had guess it awful close just by listening). It's had a complete tune up with the plugs, wires, roters, timing belt, and coil. The old plugs were nice and clean when I pulled them out but there was a little oil residue under the air filter (maybe a clogged PCV).

I'm getting no codes from the ECM but occassionally the engine will bog down and backfire before running properly. Above 1,000 rpm the engine doesn't vibrate as bad but it's no where near as smooth as my old Geo.

Any suggestions?

GeoMetron