[DeTomaso] Great new brakes, but stalling when braking

[shawkins777 at comcast.net]

It sounds like the typical fuel spilling over out of the vent tube.  I think Holley makes a tube that ties the two vents together so this doesn't happen. 



Steve 



----- Original Message -----


From: "Mikael" <mikael_hass at mail.tele.dk> 
To: detomaso at realbig.com 
Sent: Sunday, May 27, 2012 4:03:10 AM 
Subject: [DeTomaso] Great new brakes, but stalling when braking 

First, let me explain why I know I have this problem. I've installed Dennis 
Quella Willwood brakes this winter, and they definitely work. So I've 
probably made more hard stops than ever. Great brakes. 

But the engine stalls when under hard and long braking. I've read the forums 
about this, and suggestions include: 
Too lean, richen idle 
Front float too low, raise 
Rear float too high, lower 
Ignition too retarded, advance 
Brake booster vacuum leak 
Other vacuum leaks 

I've tried most of the above with no luck. It should be said that with my 
cam profile from hell, it only sees 10 inches of vacuum at a nice steady 
four corner idle around 900 rpm. 

In the end I tested something a bit scary, going very fast in reverse and 
hard braking. And then it doesn't stall! That to me says that this is indeed 
a fuel gravity issue, but I have no idea how to fix it. Somebody wrote about 
jet extension (since those idiots at Holley put the jets on a wall instead 
of on the floor like a Rochester or Summit carb), but others were against it 
because then I might get fuel starvation when accelerating hard, a much 
bigger problem. 

Any ideas? 

Mikael 

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