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sprinkles08, ASE Certified Technician
Category: Mazda
Satisfied Customers: 22661
Experience:  ASE Master and Advanced level certified. Factory trained with 15 years dealership experience
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My 1997 B2300 starts, but then will not start again after

Customer Question

Customer: ***** ***** - My 1997 B2300 starts, but then will not start again after shut down until 10-15 minutes later. Replaced spark plugs, plug wires, coils. Have fuel pressure on injector rails. Thinking about replacing ignition control module. Thoughts?
JA: Thanks. Can you give me any more details about your issue?
Customer: If the truck has not been running for some time, it will start without an issue. If you turn it off, it will not restart until it has sat for some time.
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Submitted: 1 year ago.
Category: Mazda
Expert:  sprinkles08 replied 1 year ago.

Hello and welcome to JustAnswer!

A hot restart issue is often caused by vapor lock due to a weak check valve in the fuel pump.

Have you actually verified you're missing spark when it won't start?

The first step in diagnosing the problem is to see if any fault codes are setting. Have you checked for codes?

Customer: replied 1 year ago.
I have not verified that I a that I'm missing spark. No codes on the code reader. I was suspicious of the fuel pump - I had the tank off last summer to replace the filler neck and should have replaced it then. Should I go ahead and replace the pump or test it or spark?
Expert:  sprinkles08 replied 1 year ago.

Before jumping to replacing the pump I would definitely make sure it's the issue.You'll want to see if spark is present at the time it won't start, if there is spark and no fuel pressure then you'd need to check for power and ground at the pump. If power and ground are ok but the pump doesn't run then it can be condemned.

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