Starting issues, cranks does not start

Tiny
KEESHA PARKER
  • MEMBER
  • 2001 HONDA PRELUDE
  • 4 CYL
  • AUTOMATIC
  • 170,000 MILES
My car has been having trouble starting. It will crank but not fire. Changed battery, spark plugs and checked fuses. I can hear the fuel pump turn on when I turn the key. I finally got it to start today, but it shut off at a stop and started again. Then my check engine light (which has been on for awhile now because of a bad knock sensor) started flashing off and on. I need help figuring out what the starting issue is and why the check engine light started flashing when I finally got it running.
Friday, October 19th, 2018 AT 2:39 PM

3 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,645 POSTS
Hi and thanks for using https://www.2carpros.com/questions/pulls-when-braking-direction-depends-on-brake-temp

The flashing engine light indicates a misfire is occurring at that time. Now, many things can cause that to happen, however, I would suggest starting with checking the fuel pump pressure. Although you hear it run, it may not be providing enough pressure. As a result, hard start, engine miss. Here is a link that describes how, in general, to check pressure:

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

Here is a link that discusses what can cause a hard start:

https://www.2carpros.com/articles/engine-cranks-excessively-before-starting

Here are the directions specific to your vehicle for testing. The manufacturer's specifications for pressure are in the directions.

____________________________________________

Inspection
1. Relieve fuel pressure.

2. Remove the 12 mm sealing nut from the fuel rail. Attach the 12 mm fuel pressure adapter nut and the special tool.
3. Start the engine. Measure the fuel pressure with the engine idling and the vacuum hose of the fuel pressure regulator disconnected from the fuel pressure regulator and pinched. If the engine will not start, turn the ignition switch on, wait for two seconds, turn it off, then back on again and read the fuel pressure.

Pressure should be: 270 - 320 kPa (2.8 - 3.3 kg/sq.cm, 40- 47psi)

4. Reconnect vacuum hose to the fuel pressure regulator.

Pressure should be: 200-250 kPa (2.1-2.6 kg/sq.cm, 30-37 psi)
If the fuel pressure is not as specified, first check the fuel pump.
If the fuel pump is OK, check the following:
- If the fuel pressure is higher than specified, inspect for:
- Pinched or clogged fuel return hose or line.
- Faulty fuel pressure regulator.
- If the fuel pressure is lower than specified, inspect for:
- Clogged fuel filter.
- Faulty fuel pressure regulator.
- Fuel line leakage.

_____________________________________________

If you determine the pump needs replaced, here are the directions:

____________________________________________

REMOVAL AND REPLACEMENT
Replacement

WARNING: Do not smoke while working on fuel system. Keep open flames away from your work area.

1. Remove the seat cushion, and pull up the carpet.
2. Remove the rear floor beam.
3. Remove the access panel from the floor.
4. With the ignition switch OFF, disconnect the 2P connector (C508) from the fuel pump.
5. Remove the fuel pump mounting nuts.
6. Remove the fuel pump from the fuel tank.
7. Install parts in the reverse order of removal.
___________________________________________

I hope this is helpful. Let me know if you have other questions or need help.

Take care,
Joe
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Friday, October 19th, 2018 AT 9:12 PM
Tiny
KEESHA PARKER
  • MEMBER
  • 2 POSTS
Thank you so much for the help. So the fuel pressure could cause the not starting and the check engine light to flash because of misfire? The strange thing is when it was not starting I tried the spraying starter fluid trick and that did not help either. And if the check engine light is flashing it is not safe to drive right? Would it be safe to drive to a shop?
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Saturday, October 20th, 2018 AT 12:33 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,645 POSTS
Welcome back. If the light is flashing, I would not recommend driving it because it can result in other issues. However, if you have to take it a short distance, it should be okay.

Yes, low pressure can cause both of these issues. However, it is odd that it did not start with starting fluid. That is usually an ignition issue.

Regardless, enjoy the rest of the weekend and let me know what you find.

Take care,
Joe
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Saturday, October 20th, 2018 AT 7:54 PM

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