[DeTomaso] OK, now what did I screw up?

Pantdino pantdino at aol.com
Sun Apr 17 23:54:52 EDT 2011



Actually no gas going to the secondary main circuit would explain this too-- mixture is fine until the secondary butterflies open, at which point more air but no more gas is added to the intake mixture and the ratio goes too low to support combustion


Jim O

-----Original Message-----
From: David & Marilyn Bell <davidabell at worldnet.att.net>
To: Charles McCall <charlesmccall at gmail.com>
Cc: detomaso at realbig.com
Sent: Sun, Apr 17, 2011 8:33 pm
Subject: Re: [DeTomaso] OK, now what did I screw up?



It sounds like the secondaries are the likely problem.  If you very
radually open the throttle until wide-open, does the engine still stall?
hen the secondaries are opened suddenly (engine off), do the secondary
quirters produce a strong jet of gasoline?  If not then the secondary
inkage, accelerator pump and accel pump linkage should be checked.
Dave Bell
-----Original Message-----
rom: detomaso-bounces at realbig.com
mailto:detomaso-bounces at realbig.com]On Behalf Of Charles McCall
ent: Sunday, April 17, 2011 12:39 PM
o: detomaso at realbig.com
ubject: [DeTomaso] OK, now what did I screw up?

i all,

I've had some off-line conversations over the past day with a few people
egarding my carb cleaning. There may be some general interest to the list,
nd I've lost track of who I have said what to, so the easiest is to just
ost to the list.

I pulled my carb off over the weekend. I removed both bowls and found a
urprising amount of fine sand-type stuff inside.

I removed the floats and cleaned out the bowls. I cleaned up everything the
est I could and re-assembled.

I installed the carb and fired up the engine. I noticed two odd things -
irst what appeared to be a spurt of fuel out of one of the vents, but I
idn't see it again.

The engine fired up and ran pretty well, but if I give it full throttle, the
ngine dies. If I release the throttle, the engine catches again.

Note that it did NOT do this before I "fixed" things.

The carb is a Holley 700DP. It'll run just fine at any rpm as long as the
hrottle is less than half open, at which point it stalls.

What did I screw up? How do I unscrew it up?

Thanks!

Charles McCall
1985 DeTomaso Pantera GT5-S #9375
"Raising Pantera Awareness Across Europe"
 <http://www.poca.com/index.php/gallery/?g2_itemId=2323>
ttp://www.poca.com/index.php/gallery/?g2_itemId=2323

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