This help?

 

I think so, thanks. I don't recall ever having four lines going to that vacuum port only three. But I'll just have to take some more time today to look around and if I can't anything I'll just plug it in there so it doesn't get in the way of anything

 

Just called and ordered the o rings, going to get them later today

 

There are only three.

 

Whoops, I mis read that. I'll have to check the connectors on the port today. I might of skipped past them and didn't see if one did go to the regulator like that picture states.

 

I found where it went on the intake manifold and got the o rings to stop the leak. Thanks so much everyone she's back on the road and sounding better than ever!

 

What size/part number o-rings worked?

 

730-5018 the 3/8ths size worked. I got a package of both sizes just in case. It makes sense that the supply line is bigger than the return since less fuel should reach it with the injectors pumping

 

Cool, thanks for following up with the good news.

 

No problem, I'm hoping that after all that, with the cleaning from the engine ports and new injectors I get some sort of mpg gain!

 

For reference, over the past three months my '89 has averaged 15- 16.5 strictly city and 22-24 on the highway depending on how full I've packed her. I'm running 703 injectors and Accel 5040 plug wires but am otherwise stock.

 

That sounds really good, Since I live in a rural area back at home I averaged about 15-16 mpg with the lift and tires, On my way to school which was 5 hours of all highway I averaged 22.5 mpg. So I'm hoping I can get around 17-18 mpg now. The first two injector holes up front were half way clogged in a torx star shape it was bad