I have a 90 4Runner with a 95 3.0 V6 that was put in by previous owner at the beginning of the year. I got it smelling like gas so I didn't run it until I changed the fuel injector seals (all 6 were either worn, rock hard, cracked, or missing). Doesn't smell like gas now, so I started it up and drove around a bit and have noticed a few issues.
First off, when it idles there is an intermittent 500rpm bump (sometimes 2 or 3 in a row) for about half a second, then drops back down. When driving it does the same thing but the bump lasts about a second and a half before dropping back down. There is also some intermittent pinging or clicking, but I don't know if that's related.
Second, it's hard to start in the mornings. I cleaned the exterior of the cold start injector (was pretty filthy) and there is gas pressure at the line that connects to it. So maybe it's the switch? Or maybe I need to clean the inside of it by somehow running some cleaner through it?
The check engine light is on, I haven't had a chance to scan it yet but previous owner says it's a knock sensor code. I have reset it by unplugging the battery, but it comes right back up immediately.
Anyway if anyone has any solutions or ideas about any of these things, please let me know. I drove the truck about 60 miles yesterday, but am skeptical about driving it again till I get to the bottom of what's going on. Thanks!
First off, when it idles there is an intermittent 500rpm bump (sometimes 2 or 3 in a row) for about half a second, then drops back down. When driving it does the same thing but the bump lasts about a second and a half before dropping back down. There is also some intermittent pinging or clicking, but I don't know if that's related.
Second, it's hard to start in the mornings. I cleaned the exterior of the cold start injector (was pretty filthy) and there is gas pressure at the line that connects to it. So maybe it's the switch? Or maybe I need to clean the inside of it by somehow running some cleaner through it?
The check engine light is on, I haven't had a chance to scan it yet but previous owner says it's a knock sensor code. I have reset it by unplugging the battery, but it comes right back up immediately.
Anyway if anyone has any solutions or ideas about any of these things, please let me know. I drove the truck about 60 miles yesterday, but am skeptical about driving it again till I get to the bottom of what's going on. Thanks!
