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sprinkles08
sprinkles08, ASE Certified Technician
Category: UK Car
Satisfied Customers: 22301
Experience:  ASE Master and Advanced level certified. Factory trained with 15 years dealership experience
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It has a misfire. and runs on three and then 4 and seems iin

Customer Question

hello there,
JA: Hello. What do you want help with?
Customer: it has a misfire. and runs on three and then 4 and seems rich iin fuel. was looking at sensors to see if it could be one of those as I have changed leads plugs and coil packs :)
JA: Has the vehicle turned into a gas hog? And how does it start -- same as usual?
Customer: starts first time
JA: What is the model/year of your Mazda?
Customer: 1999 Mk2
JA: Are you hoping to fix this yourself? What have you tried so far?
Customer: yes changed plugs leads and coil packs
JA: Anything else you think the mechanic should know?
Customer: just smells rich but when it is running right it drives fine
Submitted: 8 months ago.
Category: UK Car
Expert:  Greg replied 8 months ago.

Hi .

Is the check engine light on when the engine is running .

Have you checked for malfunction codes .

Greg

Customer: replied 8 months ago.
Hi. Don't have a diagnostic and no engine light not coming on apart from misfire car runs fine
Expert:  sprinkles08 replied 8 months ago.

Hello and welcome to JustAnswer!

It should be setting a misfire code at the least if it's losing a cylinder.

Does the engine light do a bulb check when the key is first turned on?
How did you determine it's running on three cylinders when it acts up?

Customer: replied 8 months ago.
You can hear it spluttering as you press the Excelerator and then when it gets beyond a certain point it clears and it sometimes smells Rich yes the boat flights and everything come on on the dash
Expert:  sprinkles08 replied 8 months ago.

How did you determine it's running on three cylinders when it acts up?