Fuel puddling in upper intake

[H20 LOL]

964t
What would cause fuel to puddle in the upper air intake? Any insight would be great..

[Tippy]

First hint to get EFI...........so it won't start for weeks like mine

Sarcastic bump....

[heliolps2]

Your warm up reg most likely blow the diaphragm , and is blowing fuel up through the breather and in to the air box and dripping onto the intake manifold , I have CIS and I love it, sorry tippy , easy to replace the WUR just make sure that you get the same exact model or look up Rarlyl8 ( Brian ) for an adjustable one , it will come Pre set to factory specs , but adjustable if you want better proformance, but you need to do a lot of research before tackleing that,

Helio

[Tippy]

Does the Brian Leask WUR work on turbocharged cars?

[911nut]

Originally Posted by heliolps2

Your warm up reg most likely blow the diaphragm , and is blowing fuel up through the breather and in to the air box and dripping onto the intake manifold .

+1.
RarlyL8 or direct to Brian Leask are your sources for a rebuilt, adjustable wur. With an adjustable wur you will like the performance improvement once you have your car set up.

[H20 LOL]

Originally Posted by Tippy

Does the Brian Leask WUR work on turbocharged cars?

Yes.

Thicker diaphragm more boost.
Let's get it on!

[JFairman]

"What would cause fuel to puddle in the upper air intake? Any insight would be great.."
Never heard of an upper intake.. what is that?
If the WUR fuel metering disc sprang a leak and it's vent hose is still where it should be the air cleaner housing will have fuel in it.

"Thicker diaphragm more boost."
They don't have a thicker diaphram made.. they sandwich 2 stock ones together if you ask for that $30 something modification.

[H20 LOL]

I didn't know that, I thought I read a few places that it was a special thicker one. Maybe I am mistaken.

[fredmeister]

Originally Posted by JFairman

"What would cause fuel to puddle in the upper air intake? Any insight would be great.."
Never heard of an upper intake.. what is that?
If the WUR fuel metering disc sprang a leak and it's vent hose is still where it should be the air cleaner housing will have fuel in it.

"Thicker diaphragm more boost."
They don't have a thicker diaphram made.. they sandwich 2 stock ones together if you ask for that $30 something modification.

Is that what Leask does also or does he source a thicker diaphragm?

Whats the odds of getting a stock WUR to run fine in a modded 3.4 liter with SC cams and stock euro fuel head and injectors? Only added fuel mod is water/meth kit.

[911nut]

Originally Posted by fredmeister

Is that what Leask does also or does he source a thicker diaphragm?

When I sent my wur to Leask for a rebuild I spec'ed the heavier diaphragm.
When I took it apart there was only one diaphragm in it so I assume that's exactly what he does.

[JFairman]

I was told about sandwiching two origonal diaphrams together to increase durability running higher boost by another CIS rebuilder.

I had Brian Leask make my WUR adjustable around 4or 5 years ago and it works great. It's amazing how adjustable it is on a CIS Flowtech modified fuel head.
I've never taken it apart to see if he made a thicker boost enrichment diaphram and didn't mean to imply thats how he does it.

[H20 LOL]

So just an update, it IS thicker, Brian has them made.

[RarlyL8]

Yes BL has thicker diaphragms made.
Yes I stock adjustable WUR's pre-set to your modifications.
Yes you can have a stock WUR internally adjusted to match your fuel needs, we handle that as well. Both are plug and play.

If fuel is pooling in your air intake I assume you have the stock air box and the WUR vent plumbing is intact. Pull the vent line and verify that is where the fuel is coming from.
The fuel is pooling in the air intake and not the intake manifold yes?
Your '91 C2T WUR should have a part number ending in -160. Verify that as well.
Are you running higher than stock boost?
Is the car now running badly?
If fuel is in the air intake then likely the WUR diaphragm has blown, if fuel is pooling in the intake manifold then likely the cold start injector is leaking. Neither of these is a common problem.

[H20 LOL]

RarlyL8, thanks for the reply
I am running 1.1bar
Yes it was puddling in the AIR intake.
The car wasn't running badly before. It did have a progressively worsening hot start issue. One day it wouldn't start at all for 10 min then finally I managed to get it running and it was running horribly and the front fuel pump got really loud which lead me to think it was the fuel accumulator. I was wrong. When I was changing out the accumulator I removed the air intake and then found the fuel puddling in it. It was indeed the WUR and I did get one from Brian.

[einsteiger]

Well done. I love it when a plan comes together!