[DeTomaso] Engine run anomalie

[forestg at att.net]

Boyd,
It is possible that the float is too high or the needle is leaking by and flooding the engine. If this is the case holding the throttle to the floor and cranking for awhile should start the engine. The excess fuel would evaporate after a time and that could explain why it starts after sitting awhile.
Forest
-------------- Original message from boyd casey <boyd411 at gmail.com>: -------------- 


> I just posted that I know have a spark indicator ( goes in line with the 
> coil or a plug and according to it I am getting spark but no combustion. I 
> am going to take off my cool air induction so I can quickly open the air 
> cleaner and see if it is squirting gas. I drove it to day with the gas cap 
> off to see if that was a contributing factor, it didn't make any difference. 
> Someone suggested a sticking fuel bowl needle. have you ever heard of a 
> holley 650 that stops working when it gets warm?Boyd 
> 
> On Wed, May 13, 2009 at 7:50 PM, wrote: 
> 
> > Boyd, 
> > That should be enough fuel pressure. I'm leaning toward an ignition problem 
> > but here is what I would do first. The next time it won't fire stop, remove 
> > the air cleaner, open the throttle and see if the accelerator pump gives a 
> > squirt of fuel. If it does then start checking ignition system. 
> > Forest 
> > -------------- Original message from boyd casey : 
> > -------------- 
> > 
> > 
> > > I have been having a recurring problem with my car. It is a 73 L that is 
> > > not completely stock, Edelbrock intake, holley 650 w/ manual choke , 
> > > MSD 6AL, MSD low profile distributor, MSD "blaster "coil, All the MSD 
> > stuff 
> > > is new including wires and new plugs. I have recently added a" Fram 
> > "racing 
> > > fuel filter, a small " inline" gas filter ( so I can actually see the 
> > gas), 
> > > a fuel pressure gauge. The problem is the car will start and run and seem 
> > > okay. If I only drive it around the block I never have a problem. If I 
> > drive 
> > > it a few miles I don't seem to have a problem ( Unless I turn it off) 
> > when I 
> > > turn it off it won't re start. I thought I had a fuel tank debris 
> > problem. I 
> > > have removed the fuel gauge sending unit, fuel out let twice 
> > > and completely drained and vacuumed the tank to pick up any debris. I 
> > didn't 
> > > find any evidence of any particulate mater and the brass screen at the 
> > end 
> > > of the fuel pick up is intact and did not show any signs of blockage. I 
> > have 
> > > noticed that when my engine won't start my fuel pressure gauge stays 
> > showing 
> > > 4.5 lbs of pressure( even though the engine is not running) that made me 
> > > think I had picked up some debris and that it was blocking the fuel inlet 
> > > and that the debris was being held in place by the vacuum created by the 
> > > fuel pump. I installed a vent line using a "T " connection from mu fuel 
> > > line between my fuel filter and the intake to the carb and another "t" 
> > > connection in the vent line. I put a small ball cock valve in this line 
> > so I 
> > > could release the vacuum and "drop" any debris being held by the vacuum. 
> > > This works but not immediately. The pressure on the fuel gauge drops to 
> > zero 
> > > but the car still won't start. usually after around 45 minutes the car 
> > will 
> > > start. It occurred to me today that perhaps the problem is not a clogged 
> > > fuel line but a blocked Vent line. If the gas tank is not vented won't 
> > that 
> > > create a problem as more and more gas is sucked out of the tank and the 
> > > vacuum build and since no air is entering the tank it becomes 
> > increasingly 
> > > difficult and eventually impossible for the stock mechanical fuel pump to 
> > > suck up any gas. Does this make sense? If this is the case is the remedy 
> > in 
> > > the gas cap or the vapor separator assembly Aside from the vent line that 
> > > terminates there the other connection on top of the gas tank? Also Since 
> > I 
> > > don't have the original air cleaner or any of the vacuum operated 
> > emissions 
> > > devices do I still need to keep the charcoal canister? The return from 
> > the 
> > > canister to the air cleaner no longer exists. My concern was that if the 
> > car 
> > > were to have the misfortune of winding up in an inverted position would 
> > the 
> > > vent line to the canister prevent fuel spillage. If not is there any 
> > reason 
> > > not to have the vent line open to the air instead of the cannister( which 
> > I 
> > > would like to remove it if is not serving a useful function.) If this is 
> > an 
> > > issue that can be remedy with a new gas cap do I have to buy a "pantera 
> > "gas 
> > > cap ,or is there a "normal " vented gas cap I can use?Thanks, 
> > > Boyd 
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