Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
1987 Ford Mustang LX, 2D Hatchback, 5.0 E, AutomaticFACTORY OEM SERVICE PROCEDURE
Hard Start - Hot
- Inoperative ISC motor. EEC-IV diagnosis required. TP sensor stuck at WOT. EEC-IV diagnosis required. Injector leaking or inoperative. Check for fuel charge while cranking engine.
- Excessive fuel pressure. Service pressure regulator and fuel return line. Contaminated fuel pressure regulator valve and seat. Service pressure regulator or check fuel pressure bleed down after engine has been turned off. Injector "O" ring seal leaking. Perform injector leakage test.
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
Rather have a pro handle this?
A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.
Comes to youSame-day available12-month warranty
Get a Free QuoteNo obligation. See pricing before you book.