Hesitating

[Theseeker152]

I clocked the plugs wires on the cap to the correct the 5.0 clocking. It has brand new Motorsport 19LBS Injectors, and Fuel Regulator.
There is no check Engine light. It just surges/hesitates under somewhat hard acceleration, and up hills. a light foot on the pedal it is fine.

[ssp91ssp]

Originally Posted by Theseeker152

I clocked the plugs wires on the cap to the correct the 5.0 clocking. It has brand new Motorsport 19LBS Injectors, and Fuel Regulator.
There is no check Engine light. It just surges/hesitates under somewhat hard acceleration, and up hills. a light foot on the pedal it is fine.

see if you can fit a manual fuel gauge to the rail , then place the car under a load and see if the psy drops off ??? like a faulty fuel pump ?
if there is enough hose tape the gauge to the windshield and find that hill as your load , sounds like a junk pump my friend ?
your psi should stay 30-40 psi at all times .
hope this helps
I'm in tx but may be able to help over the phone ??
Hector 956/802-2983

[1989 Tx DPS SSP]

About 12 years ago mine would do the same thing under load. I had decided to replace some things do to mileage( Timing Chain,Lifters and new Ford NOS Heads) When I picked up the Distributor that was in my car of off the bench to hand to the tech that was working on my car. We discovered when we spun it it didn't feel right. You may have a worn out Distibutor due to the Mileage.


Tom

[ssp91ssp]

Dear Friend ,
Is the car fixed ?????

ssp91ssp

[rocketscience]

I realize this thread is old, but I'm replying because I recently had very similar symptoms on my 1991-powered car (started happening more and more, but only when the engine was warm). In the end it was the TFI module. Need to be sure to put that heat sink grease thoroughly on the back, otherwise there's a good chance even a relatively new TFI could go bad.