re: New kid on block (#5939) Question #1

["Jason Jones <PC Upgraders, Inc>" <jason@xxxx>]

Hey Bill mine is about 6 months "New" and have started with all the same questions... I will try to help out the "Almighty moderators and DeLorean regulars" Because I know how often they have answered these questions. Thanks to you ALL! When you do get Yahoo search to work for the words "Hot Start" you would be overwhelmed.

Once you have a better understanding how the DeLorean's Fuel system works you are more likely to debug the problem easily and step NUMBER ONE is to buy your parts and service manuals and read them cover to cover about the problems you are having. Many FINE companies out there would be glad to sell you one. There are SEVERAL reasons why you probably have a hot start problems however almost 90% of all of them are related to the LOSS of fuel pressure in the system after to turn off the DeLorean. The leak can be from several places starting from the Check Valve located on the Fuel Pump, the Fuel Accumulator, the check valve at the Fuel Distributor or the fuel distributor. My Hot Start problem was the O-Ring on the Fuel Distributor/Check Valve (Thanks Rob Grady and DMC Joe!) It is easiest to replace the cheapest and easiest parts first however you may also want to check to see if it was done already because most likely may not be the problem it was done by the previous owner. The Fuel Accumulator (I am told ) is the most common problem however it is NOT always the case. It could be a leak at your fuel filter but probably not. Here is a quick test you can try to test the fuel accumulator and it only consists of listening. If you run your car for a few seconds and then turn it off it SHOULD be quite for at least 15 min... If you are loosing pressure (I would buy a Fuel Pressure Gauge for the Bosh System to help you ) and the Accumulator IS working then you should heard a loud muffled "Bong" a few times. This means that it is likely your accumulator is working because it is RE-Charging or pressurizing the system while the leak is happening, but you are loosing pressure somewhere else...check valve, Fuel Distributor etc... This is NOT a sure-fire method however it does work without getting Dirty. If you want to test your accumulator you can jack the car up on ramps and start the car for a few seconds to pressurize the system climb under the car and loosen the Small Rubber tube connected to the accumulator see http://jason.kitcarmagazine.com/delorean if there is fuel coming out of the accumulator were that small tube was connected, and I mean more than a dribble, then the accumulator is bad. That tube is the Fuel return line and is not pressurized so it could dribble NOT spray. Be sure to wear goggles. If the Accumulator is bad then replace it. That web page of mine is pretty documented. Basically you need to be Methodical. One note though if that car has not been driven in a while it would be VERY VERY wise to siphon the gas out and wipe out the tank and replace any damaged components or hoses. Stagnant Gas was the worst thing someone could do to their DeLorean. I recently replaced my Siphon tube and it was almost half the size because Gas had soaked in a ruined it. I could look at it wrong and it would tear. 

The temporary hot start fix is to unplug the Cold Start Valve electrical connector and plug it in to the

Hope this helps with your first round of questions!

Jason
Dayton, Ohio 
#3121



Date: Mon, 08 Jul 2002 16:13:20 -0000
From: "content22207" <>
Subject: New kid on block (#5939) Question #1

#5939 is now in Virginia, halfway to new home in North Carolina.

We'll take these questions one at a time ...
(Apologies for re-asking a question that's been addressed 100,000 
times but I can't get Yahoo's "Search Archive" feature to work).

Question #1: Hot Starting (bad accumulator?)

Car has stock Bosch fuel injection. Runs fine. Starts cold. Problem: 
won't restart hot. Am currently using ether (sorry guys, but it's the 
only way to get out of the parking lot). Suspect it's a bad fuel 
accumulator. Have located colored electrical connectors on firewall, 
but can't remember which colors to switch. What is temporary hot start 
fix AGAIN?

BTW: have no documentation on car yet (will be part of that big 
initial parts purchase) -- where exactly is fuel accumulator located?

Have beaucoups of other questions, but we'll "start" with just this 
one (humor) ...

Bill Robertson
North Carolina
#5939



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