HARD START HOT OR COLD - FUEL PRESSURE REGULATOR
Applicable Models
| Model |
Starting S/N |
Ending S/N |
| 1999 PROTEGE |
00000000 |
ZZZZZZZZ |
| 2000 PROTEGE |
00000000 |
ZZZZZZZZ |
| 2001 PROTEGE |
00000000 |
ZZZZZZZZ |
| 2002 PROTEGE |
00000000 |
ZZZZZZZZ |
| 1993 RX-7 |
00000000 |
ZZZZZZZZ |
| 1994 RX-7 |
00000000 |
ZZZZZZZZ |
| 1995 RX-7 |
00000000 |
ZZZZZZZZ |
| 1998 626 |
00000000 |
ZZZZZZZZ |
| 1999 626 |
00000000 |
ZZZZZZZZ |
| 2000 626 |
00000000 |
ZZZZZZZZ |
| 2001 626 |
00000000 |
ZZZZZZZZ |
| 2002 626 |
00000000 |
ZZZZZZZZ |
| 2000 MPV |
00000000 |
ZZZZZZZZ |
| 2001 MPV |
00000000 |
ZZZZZZZZ |
| 2002 MPV |
00000000 |
ZZZZZZZZ |
| 1999 MIATA |
00000000 |
ZZZZZZZZ |
| 2000 MIATA |
00000000 |
ZZZZZZZZ |
| 2001 MIATA |
00000000 |
ZZZZZZZZ |
| 2002 MIATA |
00000000 |
ZZZZZZZZ |
| 1995 MILLENIA |
00000000 |
ZZZZZZZZ |
| 1996 MILLENIA |
00000000 |
ZZZZZZZZ |
| 1997 MILLENIA |
00000000 |
ZZZZZZZZ |
| 1998 MILLENIA |
00000000 |
ZZZZZZZZ |
| 1999 MILLENIA |
00000000 |
ZZZZZZZZ |
| 2000 MILLENIA |
00000000 |
ZZZZZZZZ |
| 2001 MILLENIA |
00000000 |
ZZZZZZZZ |
| 2002 MILLENIA |
00000000 |
ZZZZZZZZ |
0000148 Dealer Repair Information
If the vehicle cranks but does not start or takes excessive time to
start, it may be caused by the fuel pressure regulator/fuel system.
Follow the inspection procedure below to determine what component of the
fuel system may be at fault.
Check fuel pressure (fuel pressure regulator may not maintain pressure).
The only sure way of checking, is to clamp off hoses with a pair of
smooth vise grips in the following order.
1.Check fuel pressure when engine is in a no start condition. If
pressure is low and increases only after cycling the ignition key on
and off two or three times, the pressure regulator could be leaking.
2.Clamp off supply hose from tank (high pressure from filter). If
pressure is now maintained, the pump check valve is leaking. If
pressure still drops, see the next step.
3.Clamp off return hose from fuel rail to tank after running engine
again to normalize pressures. If pressure is now maintained, pressure
regulator was leaking.
4.With both clamps on and pressure drops, leaky fuel injectors are at
fault. There is no other way for fuel to escape.
If the pump operates and the fuel pressure is zero, then either the
check valve or safety valve is leaking. After replacing the fuel pump,
recheck the fuel pressure. If restriction is not corrected damage could
occur to the new pump.
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