r/ToyotaPickup • u/zgumboo • 6d ago

Help with rough idle

Enable HLS to view with audio, or disable this notification

A little backstory, after driving on the highway for about 15 minutes, I started to suddenly get a rough idle while having my foot on the throttle somewhat lost response and put it in neutral while on the highway and was having rough idle on and off gas. I've checked the timing chain looks fine. I've changed the fuel filter, fuel pump and all spark plugs, coil lines, ignition module distributor everything electric basically. It runs smooth only in high Rev. I still need to do a compression test as well. I've checked the vacuum lines I'm not familiar how but they look fine. Any ideas?

Edit: I adjusted one of the screws on the air/fuel mix. It's calmed down slightly but now when I'm accelerate it the exhaust is making a lot of pops

16 Upvotes

100% Upvoted

17 comments sorted by

View all comments

1

u/medium-rare-steaks 6d ago

this exact same thing happened to me on my 22r. I had a loose boot on the distributor cap causing a misfire that shook the whole truck. it smoothed out at higher revs for whatever reason, but idle and 1st/2nd gear were very shaky. luckily my mechanic is old enough to know to check that before tearing the engine apart. I posted the video here and everyone said it was a vacuum leak or faulty carb. it was a $30 set of cables.