How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask K. Wiggins Your Own Question
K. Wiggins
K. Wiggins, ASE Certified Technician
Category: Hyundai
Satisfied Customers: 2869
Experience:  ASE Certified Technician, Associates Degree in Automotive Technology, 15+ years in the trade
Type Your Hyundai Question Here...
K. Wiggins is online now
A new question is answered every 9 seconds

2003 santa fe 2.7l misfire P0301 rough idle, new plugs and

Customer Question

2003 santa fe 2.7l misfire P0301 rough idle, new plugs and wires already
JA: Is the rough idle intermittent or consistent?
Customer: consistent
JA: Are you fixing your Santa Fe yourself? What have you tried so far?
Customer: yes, plugs and wires replaced
JA: Anything else you want the mechanic to know before I connect you?
Customer: 180,000 miles
Submitted: 10 months ago.
Category: Hyundai
Expert:  K. Wiggins replied 10 months ago.

Hello, at 180k the first thing I would do is run a compression check. If you don't have a compression gauge you can borrow one with a deposit at most parts stores. Here's how to do it all cylinders should be within 10% of each other.

If compression checks good get a mechanics stethoscope and listen to the injector and see if you can hear it clicking.

Let me know what you find and we can work further if needed.