Hi guys,
TL;DR version: Engine hesitates when revved above idle. Sounds like it will stall. Bad gas? Or look for other things? (video link below)
Long version:
I went to drive my car today to give it some exercise, and for the first time in 16 years of ownership, it had a problem that kept me from leaving the driveway. After 10 minutes or so of letting it idle and messing with it, I ended up putting it back in the garage. I'm *hoping* it's as simple as bad/old gas, but wanted to ask on here and get some opinions.
Admittedly I'm getting worse these past few years of not driving it enough, and only get it out about every 1-2 months. But it has always been reliable, and if it's a longer interval, it might stall after the first starting try (automatic transmission), but it always runs great after the 2nd try on those occasions. Today it had been 7 weeks since I drove it last, and anticipating a stall on the first turnover I gave it a bit of gas to keep it running. There was a bit of a "pop/ping" noise from the engine as it turned over, which was unusual. It wasn't super loud or anything, but it bothered me because I haven't heard it before on startup. After that, it just settled in to 750 rpms and stayed there. It did NOT do the normal rpm-hunting that it typically does on
every cold start in my ownership. But ok, I shrugged it off, and backed out of the garage. All seemed fine just letting off the brake and letting the idle speed move the car.
When I wanted to actually
drive out of the driveway and put some load on the engine, is when I realized that when you press on the gas pedal, it stumbles and gets very hesitant, and sounds like it will stall. No matter how many times I tried, even after warming up for 10 min, raising it just above idle stumbled pretty bad. In neutral, it seems to be smoother if you get it up to 2,000 rpm or so, but no dice between 750 and 2,000.
The gas tank was last filled 4 months ago in August, and has been on 1/2-5/8 of a tank for maybe 2 months or so. I googled and see that gas can go bad in 3-6 months, but this interval is nothing I haven't done many times before for years and years with no problems. Also, not sure if it's of any significance, but this was the first "cold weather" startup this season on it. 7 weeks ago, it was much warmer weather.
Here's a short video. It really doesn't sound that bad on camera, but under load when trying to drive, the engine sounds like it will stall.
https://youtu.be/1WxIcD_eVcs
Am I on the right track to siphon out the gas, put in fresh and see what happens? Thanks all, for your help.