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01 MAZDA 626 2.0 WITH A P0303. REPLACED PLUGS,WIRES,PCV AND…

Customer Question
01 MAZDA 626 2.0...

01 MAZDA 626 2.0 WITH A P0303. REPLACED PLUGS,WIRES,PCV AND FUEL FILTER PER SUGGESTION AT A SHOP. CAME RIGHT BACK. BROUGHT TO AUTO PARTS STORE SCANNED AND THEY SAY MAYBE INJECTORS OR A REGULATOR.

Mechanic's Assistant: Is the fuel filter an external one, or is it inside the tank?

EXTERNAL

Mechanic's Assistant: Are you fixing your 626 yourself? What have you tried so far?

HAVE IT IN A SMALL SHOP. THEY DID PLUGS,WIRES, PCV AND FUEL FILTER

Mechanic's Assistant: Anything else you want the mechanic to know before I connect you?

INTERMITTEN, SOME TIMES STARTS SLOW AND MISFIRES, SOMTIMES START RIGHT AWAY.

Submitted: 10 months ago.Category: Mazda
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Answered in 2 minutes by:
10/5/2017
Mazda Mechanic: Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems replied 10 months ago
Chad Farhat
Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems
Category: Mazda
Satisfied Customers: 5,776
Experience: Owner at Carolina Auto Service & Sales , 20 years Experience in Foreign & Domestic vehicles
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Hi, I'm Chad. Welcome to JustAnswer. I'm reviewing your question and I will be posting your reply ASAP.

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Customer reply replied 10 months ago
ok your thought are? I was considering fuel pressure regulator?.
Mazda Mechanic: Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems replied 10 months ago

hey how are you

They are right after replacing plugs wires fuel filter and if fault came back as P0303 , there is big Possibility is injector ,but also make sure that we are not losing power or pulsed ground from ecm and that is why injector not spraying and let them check compression on #3 and lastly THE INTAKE GASKET AND INJECTOR O RING ,IF ALL ABOVE PASS THEN REPLACE INJECTORS

TO CHECK INTAKE GASKET DO A SMOKE TEST ,VERY RARE I CHANGE REGULATOR FOR ISSUE LIKE THIS THE DTC IS SPECIFIC p0303 , IF WE HAD A p0300 THEN MAYBE ON REGULATOR

You are very welcome :)

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