Injectors Interchangable: 4-Hole & 2-Hole?

[tbryanh]

Injectors Interchangable: 4-Hole & 2-Hole?

I heard the 96-98 4Runners have silver/green injectors with 4 spray holes, and the 99+ 4Runners have orange injectors with 2 spray holes.

https://www.toyota-4runner.org/3rd-gen-t4rs/249646-fuel-injector-replacement.html

Some say 4-hole injectors should not be used to replace 2-hole injectors because the control board might not work right with them.

I have access to a set of 4-hole injectors in good condition from a 98 donor vehicle that I want to put into a 2001 vehicle.

Anyone tried this?

 

[gamefreakgc]

They work, but not as good as you think they might be. The spray pattern is very linear and shoots streams of fuel rather than a spray. Injectors with a spray pattern will yield better results than switching from one stream pattern to another.

I replaced the 2 hole injectors in my '91 with a spray patterned 8 hole injector and gained MPG's and power. I've yet to see any plug and play with the right cc's for our engines though.

 

[tbryanh]

Thanks for the reply and the info about stream versus mist.

Wasn't thinking that 4-hole was better than 2-hole and that switching from 2-hole to 4-hole would give a performance improvement.

The 4-hole are in good shape and and at least one of the 2-hole are bad.

Just want to get the car running good. Don't want mismatched injectors or injectors that won't work.

Sounds like the 4-hole injectors will work as a replacement for the 2-hole then?