Hard starting when cold?
A little after I do a motor swap I get a new problem. I just swapped my old 91 Lesabre'* motor in this car, and it works good. Had a few minor difficulties as these motors are slightly different.
Now, I'm noticing that sometimes when I start it, it stumbles, and dies right away when its cold. This is right away. I did this a few times till it stumbled and ran. I did not apply throttle while doing this. I also noticed a puff of smoke comming out of the exhaust. It does clear up quick and smells normal. Once the engine is running for a bit, it has no problem starting and running, even when I leave it for a little while. I'm going to see what its like tomorrow morning.
Last time I had a similar problem, it was the MAF sensor, but that made the engine not run at all unless you held the throttle open a little bit. Release it, and it died!
I can figure this out i'm sure. The car runs good while driving and does not stall at all. My first thought was a leaky injector or maybe the ECT It could also be the MAF, then again, theres the smoke that came out this morning, and it seems like its dumping too much gas in the motor!
2009 Pontiac Vibe AWD 2.4
1993 Buick Park Avenue 3800
1984 Chevrolet Citation 2.5 liter four.