It starts hard and takes a few seconds to fire?

1993 MAZDA MX5
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DGOLDADE
  • MEMBER
  • 1 POST
I have a 2.5L mx6. It starts hard and takes a few seconds to fire. I believe there was a light humm or buzz when I would first turn the key on but prior to the starter turning. I am wondering if there is a fuel primer and if this is the result of a fuel pressure regulator gone bad. Does the 2.5L mx6 have some sort of fuel primer that engages prior to starting??
Jan 15, 2006 at 12:58 PM

What to check next

Diagnostic guidance. Suggested checks and possible repairs are separate from the owner's reported results.

Describe the cranking delay and any change in pump sound to the technician, and have starting and fuel-delivery checks performed before choosing a pump or regulator. Provide the model year and maintenance history.

Guidance references and applicability

Source: Original question and visible replies. Owner reports and other participants' experiences are distinguished. Next steps are editorial guidance for obtaining diagnosis or clarifying the reported findings; they are not a verified repair procedure or an independently confirmed component diagnosis.

Read the replies · Discussion summary and reported outcome

AI-ASSISTED GUIDANCE · REVIEWED BY 2CARPROS
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2CARPRO JACK
  • ✓Experienced Mechanic
  • 11,533 POSTS
no its just the pump, Tune-up lately? fuel filters are very important on the new injected cars

This guide can help


https://www.2carpros.com/articles/engine-cranks-excessively-before-starting
Jan 18, 2006 at 9:28 AM
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Discussion summary

It starts hard and takes a few seconds to fire?

The owner of a Mazda MX-6 2.5L reported prolonged cranking and asked whether a previously noticed key-on hum was a separate fuel primer or related to the pressure regulator.

Reported outcome: No confirmed cause or repair result was reported.

The reply attributed the sound to the pump and asked about maintenance. It supplied no pressure readings or tests establishing pump, filter or regulator failure.

Read the original discussion

AI-ASSISTED SUMMARY · REVIEWED BY 2CARPROS
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