Another Engine not Workin'

#21
I borrowed an A9L from Scott and it didn't run any better. I also had the loaner TFI module on the distributor too.
I replaced two of the three capacitors in the ECU. Nothing changed on how the car runs.

I spoke with someone who is a Mass Flo EFI guru in MD (referred by a tech guy at Pro-M Racing, formerly Mass Flo). He said that Chris at Mass Flo is not supportive, particularly with the old Mass Flo system (because it's old!). After discussing all possibilities, he suggested that I test my fuel pump. The test revealed that the pump may be the culprit. I have to turn the key on (not start) three times for the pump to gain pressure in the system, which is still below where the pressure regulator is set. at So, in my last ditch effort to get this heap running right again, I plan on replacing my fuel pump this weekend. I bought an Aeromotive fuel pump that is ethanol friendly. I'll keep you posted on my progress on finding the @#$%^! problem.
As for other options, I have not looked into them...yet. The EFI guru I spoke with mentioned Holley Terminator NOT the Sniper as a good trouble free set up from Holley (plug and play he said). :rolleyes:

Thanks Caesar, I'll look into the QickFuel system.

Yes when I had problems with my old Mass Flo system I got the cold shoulder as well, they 'really don't support it because it's an "old system." I went ahead and paid for a full day of labor at a very reputable shop that builds resto mods and does full blown restorations of a variety of cars. Long story short they said as best as they could figure there was and ecu issue. That's when I went to the carb and edlebrock performer rpm, no use pouring more money into a system with no support.

I used the original fuel pump with a regulator that took the pressure down to carb levels and purchased the parts from Forte Parts, Mike was great to work with. FWIW it cost me less than what I spent trying to have the problem diagnosed.
 

Scott Harrison

"Growing old is mandatory, growing up is optional"
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#23
From the Interweb.....

Signs of Low Fuel Pressure
  • Unresponsive Throttle. All cars require proper fuel delivery to their cylinders in order for them to run properly. ...
  • Difficulty Starting the Car. ...
  • Stalling Engine. ...
  • Engine Tuning. ...
  • Check Engine Light Comes to Life. ...
  • Black Smoke from Exhaust. ...
  • Turbo Lag. ...
  • Spark Plugs / Misfires.
 

Scott Harrison

"Growing old is mandatory, growing up is optional"
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Member
#24
From Summit racing....
Aeromotive Stealth Electric Fuel Pumps 11540

1566915210614.png

I have a 1965 Shelby cobra with a new tank that I installed. I'm running a SBF 427 550 hp, with a Holley EFI terminator @ 55 lbs of pressure. It was a direct replacement for my old unit that broke after 4 years. No problem installing it. Engine runs perfectly.
 

TroyT

Contributing Member
Member
#25
Mike,

Luckily, the tank is near empty. In my efforts to find the problem, I siphoned the gas out thinking it was bad gas.

John, I'll provide you the name and number here when I get home.
 

TroyT

Contributing Member
Member
#26
From Summit racing....
Aeromotive Stealth Electric Fuel Pumps 11540

View attachment 1917

I have a 1965 Shelby cobra with a new tank that I installed. I'm running a SBF 427 550 hp, with a Holley EFI terminator @ 55 lbs of pressure. It was a direct replacement for my old unit that broke after 4 years. No problem installing it. Engine runs perfectly.
Scott, That's the one. O0 Delivered Sat. night.
 

TroyT

Contributing Member
Member
#27
Does your EFI guru do tunes? I've got a Holley Terminator system I'd like to get dialed in.


John
John,

I believe he does. His name is Robert Decker. Ph. 301-293-4233. His shop is located in Smithsburg, MD, which is off I-70 beyond Frederick. He seems knowledgeable on EFI systems.
 
#29
Sounds like a miss to me. I would guess ignition related. I would check the plugs, plug wires, coil, distributor and inspect and clean all grounds. Plug wires can deteriorate/dry rot over time causing them to ground out or just have too much resistance.
 

TroyT

Contributing Member
Member
#31
Hey Rob, not yet. I have the new fuel pump in the tank, but the wire connector that provides power to the pump broke apart as I was removing it. I have a new one to solder in this weekend, then I’ll install the tank. I sure hope this solves the problem. I’ll keep you posted.
 

TroyT

Contributing Member
Member
#32
Sounds like a miss to me. I would guess ignition related. I would check the plugs, plug wires, coil, distributor and inspect and clean all grounds. Plug wires can deteriorate/dry rot over time causing them to ground out or just have too much resistance.
Rodney, I went through all that you mentioned including the ground for the engine harness. I thought all along it was an ignition issue. After all that, I’m thinking it’s a fuel delivery problem. We’ll see.
 
#33
Troy if it doesn't work, contact Mike Forte or Forte's Parts. I had a similar issue with my Mass Flo over a year ago. I made the switch to a Quick Fuel Carb, Performer RPM Manifold, and a fuel pressure regulator. SO far 5000 miles on it and it has run great
 

TroyT

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Member
#34
Well, it didn't work. After installing the new Aeromotive fuel pump, it idled a little better, but it still ran rough while driving it around the neighborhood....same as before installing the pump. Ugh, I'm going to check all grounds again to make sure they are clean. I'm at a point to pass this heap onto a mechanic who knows this system to figure out the problem. I'm done! :tickedoff:
 

Tom Wells

Contributing Member
Member
#38
Jim,

Carbs worked well in the days when men were men and gasoline was gasoline...

The substance we now laughingly call gasoline is pitiful - parts of it boil at 100 degrees or less. It made my carb vent tubes - on both cars - look like Old Faithful when they got a little bit warm.

Sadly, it seems to require the 43+ psi of an EFI to keep it in a liquid state.

Times change.

Sigh,

Tom

PS: If the octane on alcohol-free ("no corn") gas is sufficient, it may work better than the 10% stuff.
 

Jim Harding

Contributing Member
Member
#39
So far Tom, just using a double dose of Marine Stabil with 93/10% seems to keep both cars happy. I’ve looked into going EFI, but just haven’t decided on which make to go with......might have to upgrade one day, but for now, I’ll stay old school. ;)
 

Danbo

FFR6198
Contributing Member
#40
Well, Troy, I hate to say this but maybe you should take it to a mechanic by having them diagnose the problem. I'll cost maybe $80 depending on the length of time. My 2 cents.
 
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