[DeTomaso] SHE RUNS!!!!

[JDeRyke at aol.com]

In a message dated 3/14/10 5:05:39 PM, teampantera at yahoo.com writes:

> NOTE TO SELF - REPLACE ALL O RING SEALS EXPOSED TO FUEL UNDER HIGH 
> PRESSURE.
> 
A good idea if you had fuel weeping or leaking. With two different GM 
performance engines & EFI, I pulled the injectors to clean out the little screens 
in the ends. I noticed the injector o-rings on the manifold end were not 
leaking but were deformed- apparently by intake heat- while the topmost ones 
up in the fuel rail looked fine. So not having spares of those on hand and 
realizing both o-rings were the same, I reversed the o-rings - fuel-rail rings 
into the intake & vice-versa- and went on about my tune-up. 5 years later, 
they're still looking good and no leaks. 
Reverse-flushing the screens is easy- you hook the injector up to a 12v 
battery, submerge it in gas and let it run a few seconds to see which way the 
flow is. If its out the bottom (normal), reverse your patch-cord polarities- 
and gas will flow backward, flushing trapped particles out of the fine 
screen on top. The amount of gas used is only a few ounces but still be careful- 
it can ignite from a spark if 12v connections are sloppy. And by holding the 
injector up with 'normal' connection (outdoors), you can check the spray 
pattern to find those that are partially varnished, and reclean those. Good 
luck- J Deryke