Scraape

So I got this ucf20 a couple months ago, and it was neglected unfortunately. This particular problem is due to the previous owner breaking both vacuum nipples off of the airbox. I need advice on how to fix the exisiting airbox or sourcing a different one.

So right now the valve cover breather is to atmosphere as well as the other hose which I think goes to the charcoal canister?

Pics of broken nipples:

alien1974

good grief it must run really badly, try a breakers yard or internet auction sites

Scraape

It doesn't run horribly.....it idles low when in drive though

RA40

iTrader: (6)

Easy to fix for less than $7. As PD mentions in the thread various nylon/plastic tube fittings are available to adapt for what is necessary.

https://www.clublexus.com/forums/ls-...e-fitting.html

alien1974

mine does that too, with the pipes connected

KJG92

My 92 has a similar issue. I've looked at a couple at salvage yards and they were broken in the same places.

aptoslexus

Brass works well and you don't have to worry about it snapping off like a twig sometime in the future.

sha4000

iTrader: (1)

I repaired mine with a brass fitting too.

alien1974

i didnt know the plastic was so fragile, as mine seems to be quite solid

sha4000

iTrader: (1)

Yeah watch out for the nipple on the radiator over flow line too.

jaaa

Your warning is about two weeks late. I broke mine off leaning over the engine changing out the starter. First I super-glued it back on then JB welded it by forming a dam around it with duct tape. It's held for the last two weeks. If it breaks, the radiator removal isn't that hard on this car, just took around 15 minutes to take it out to clean it.

sha4000

iTrader: (1)

I JB welded the nipple at first and it didn't hold long term so then I drilled out the hole and screwed in a brass fitting with JB weld and it held up with no problem. I ended up buying a new Denso radiator from rockauto for $69 because the top fitting that holds the upper radiator hose was falling apart and the hose slipped off on 2 different occasions almost leaving me stranded. Lucky I ride around with a jug of coolant and distilled water.

jaaa

Yeah, I probably have a radiator in my future. I too noticed that upper hose coupler looked in bad shape. Looked like it might fall apart at any time. $69 sounds like a great price.