I had a talk with Aeromotive again today! Three components can cause the problem. Heat from the exhaust or not enough air movement over the fuel pump to keep it cool. Second, restrictive fuel entry into the pump causing cavitation or from a non baffled tank and with the surge in fuel you have cavitation. Last but not least an inadequate wiring. Of course you do need to have a return for the system! They feel very confident that mine will work. I should know next week.
Street & Performance wanted me to put in a booster pump in front of the main fuel pump. Aeromotive wasnt impressed with the idea. I use Aeromotive on my Chevelle and Brett in tech support has been very helpful before!! If it doesnt work next week, with all the money and effort put into the design, youll hear me scream all the way from Texas!(LOL) Thanks! Dan From: Rick Schaefer [mailto:[EMAIL PROTECTED] Sent: Monday, January 14, 2008 8:11 PM To: The Chevelle Mailing List Subject: Re: [Chevelle-list] Fuel injection! Dan I had a similar but not quite so frequent problem when I first ran my TPI system. I finally resolved the problem (knock on wood) by putting a low pressure pump near the tank, feeding it to a surge tank and feeding the hi pressure pump from the surge tank. Do the pumps give any indication (noise) before they quit? On Jan 14, 2008 7:55 PM, Daniel Mascheck <[EMAIL PROTECTED]> wrote: I talked at length to Aeromotive and they gave me the set up and the guy I have installing it has done them before and feels confident. After going through 4 or 5 fuel pumps, getting about 300 miles to a fuel pump, it was time to do something different. I took my 46 truck to two different places and they didn't know their rear from a hole in the ground, hence calling Aeromotive, which I should have called them sooner, but each time I thought we had found the weak point! I know it would be better to put the tank under the bed with an internal pump, but I don't want to cut an access hole through my new aluminum diamond plate bed, so I would prefer to use the old tank in the truck. I just want to know if someone has done it, and it appears you have!! The truck has an LT1 engine from a 96 Z28. Thanks Dan -----Original Message----- From: Leo John Costigan [mailto:[EMAIL PROTECTED] Sent: Monday, January 14, 2008 3:18 PM To: The Chevelle Mailing List Subject: Re: [Chevelle-list] Fuel injection! I have a 1970 El Camino with a 92 TPI engine and 700R4 unit out of a 92 Camaro. I use the A100 pump mounted in the rear in front of fuel tank below level of tank pick up. Stock fuel pick up and sender installed in tank with ¾" rubber line to pre filter to pump. AN-6 SS line to left side of engine with Aeromotive fuel pressure/return regulator set to 55#. This return line goes to Morose EFI fuel return kit that is installed in the gas tank fill pipe. The fuel rail return line is run in a separate line that connects to one of the vapor pipes at the top of the tank. From the Aeromotive fuel pressure/return regulator to fuel rail is another fuel filter, I used a fram heavy duty filter rated at 200#. I had this installed in 1999 with no problems with this setup. The El Camino is a driver and not used for drags so the AN-6 lines satisfy the fuel supply. You man need to increase the supply lines for performance operation. FYI, the stock or after market in tank pumps are not suitable for use outside the tank. The liquid of the fuel is used to cool the pump in the tank. If you used this type of pump and shield the pump with Dynomat you could have prevented the pump from cooling with the air passed over it. Good luck Leo ----- Original Message ----- From: "Daniel Mascheck" < <mailto:[EMAIL PROTECTED]> [EMAIL PROTECTED]> To: <chevelle-list@chevelles.net> Sent: Monday, January 14, 2008 11:45 AM Subject: [Chevelle-list] Fuel injection! >I know this may not be the place to ask, but I have a 46 Chevy truck with a > 96 LT1 fuel injected engine. I have gone through 4 fuel pumps in two > months. > I have the old underneath the seat tank, and I'm pulling from the bottom > of > the tank. I was running rubber fuel injection rated lines and the tank is > plumbed with a return. The pump is maybe 4" from one exhaust and I do have > a > small shield of Dynomat Extreme, but I doubt it's doing much good! > > After I have been stranded several times, it's time to do some major > surgery! First the pump will be relocated! I have called Aeromotive and > they > gave me a plan on re-plumbing with 10 AN fitting and braided SS hose with > a > pre filter from the tank to the pump with an A-1000 fuel pump. Then a post > filter to the engine using 8 AN hose to the engine, then a special > regulator > of their choice and 6 AN return line. > > The question is, is anyone one running a fuel injection system with an > external pump successfully? I don't want to move the tank underneath the > bed, and surely it can be done. > > Thanks > > Dan > > > > -- Rick Schaefer 72 TPI El Camino
