Running rich and stumbling

When I had the old injectors in a year ago....
.....at highway speeds I was getting like +30....

and back to zero at idle....crazy

but I also put a brandnew egr valve in there too...

so too many changes to track what happened..

 

Yea it fluctuates like sometimes it’s okay then sometimes it’s up way high. My main concern is smell of gas fumes and sometimes like stumbling

 

Toyota Tacoma 2.4 2RZ, 2.7 3RZ, 4-Runner (CA Only) OE Replacement Fuel Injectors (fiveomotorsport.com)

 

I really don’t want to go part replacing lol want to do a analysis on this issue and make the right choice

 

Sure you dont have an O-ring around one of the injectors leaking....

it would evaporate fairly quickly....so might be hard to catch....

 

Yeah thats reason I went and replaced everything on the truck....
so I knew where everything stood......

like the pinched hard line on the passenger caliper...

or the rusty needles in mid universal joint.....



So yeah after changing the egr and injectors....I went from +30 back down to more reasonable +7.

But anything interfering with the air flow from the maf to that ass end O'2 sensor will cause trim swings...

Other than pump and fuel regulator.....thats all you can do on that end....

 

I replaced the first 02 sensor what about the second one? After the cat

 

I think its the first one thats important.....the 2nd one will only throw a code if the cat is failing/insufficient.....

The 2nd on my truck probably came with the truck from factory.....couple/three years ago I got a code on first one....
so I replaced them both......

They were not cheap.....over $100 each....and that was about 3 or 4 years ago.......

And even then....its the heating element that goes out on em.....
they work fine for years after everything heats up........even when they thro the code...
heating element has gone out....