Gas Bubbles?

[shea]

I have been feeling this pulse in the engine at stop lights. It is not always there but sometimes it bumps hard and other times it is just little pulses. I also like to describe it as "choking." Anyways i just realized this only happens when my gas tank is 1/2 full and up. it may be just a coincidence. Unless anyone has any thought im just going to keep testing my theory. thanks, shea

its a 1999 2.7l toyota 4runner by the way

 

[jgue467]

Run some startron in your gas tank

2 ozs the first tankful and 1 oz thereafter, will probably eliminate or significantly reduce what you're feeling - its enzyme based stuff. Luck! :banana:

 

[NateMob]

I would change the fuel filter first if its never been done.

 

[packweco]

I have this same thing happening on my 3.4. It's barely noticeable but still bothers me. I was planning on doing a fuel filter, but maybe a fuel treatment would be a good idea too!