Q: #6 cylinder misfire. 1999 Ford Explorer

asked by on December 08, 2016

Hi my 1999 Ford explorer has a misfire on #6 I've replaced spark plugs wires coil egr tps idle control valve cps. Upper and lower intake gaskets I have alot of money invested in my truck runs sure I could try fuel injector $$ but what if that's not it - bent valve or broken spring some said do compression test on that cylinder but have to take off intakes to get at don't trust many shops in the meantime I'm driving it around town like it is can not reach wire on injector to pull off and run on 5 cylinders don't want to spend a dollar more (already have) most shops won't give me an idea what would be my problem or a dollar amount (we'll have to get it in and look at it car x already soaked me for$350 on both intake gaskets I know that it says if i continue to drive may damage converters or melt a cylinder sick of guessing and honesty I would most likely want to fix for $500 or less more otherwise just drive until it blows up (frustrated in MN.thank you any advice is great advice.

My car has 213000 miles.
My car has an automatic transmission.

Hi there - unfortunately, pulling the plug on cylinder 6 is necessary for the next level of misfire diagnosis: is there actually spark at the plug while running? What is the compression on that cylinder (and any other - are they within 10% of each other)? Is that plug brown or black, or wet with fuel - signifying a leaking injector? You can get to a precise answer, but it will require a bit more effort. I would recommend an engine misfire inspection](https://www.yourmechanic.com/services/engine-is-misfiring-inspection) by a mobile, professional mechanic, such as one from YourMechanic, who will come to your location, diagnose this problem, give you an accurate assessment of damage and cost estimate for repairs.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Restricted Performance message on dashboard

When the controller sees a misfire, it shuts the fuel off to the offending cylinder, hence your "restricted performance" message. Your friend may be right because coil failures are quite common on the Jaguars. P0357 says your failure is on...

Power steering fluid shoots out of cap when turned off and wheel is not turned?

You may have an air leak at the pump and thus air is being continually drawn in, and building enough residual pressure that must be relieved once you shut the p/s off. The pressure is too much to bleed of...

How do you deactivate or activate the Belt-Minder® system?

While the Belt-Minder® system in your car is designed to help ensure that you’re aware if a seat belt isn’t being worn, there may come a time that you need to deactivate (and then reactivate) the system. Here’s how: ...

Related articles

The Best Used Cars to Buy for Families
If If it’s time for you to search for the top used cars specifically for families, check out the list we’ve put together of the top five. The list of must-haves Typical items that families are looking for in their...
The Best Used Cars to Buy for Dog Owners
Dog Dog owners are a special breed of drivers. When they shop for a used car they have a list of requirements that can be quite different from other drivers, which tends to make the process a bit of a...
The Best Used Cars to Buy If You Need to Haul a Motocross Bike
Of Of course you would love to be able to ride your motocross bike everywhere, but the reality is, at some point you're going to need to transport it. A cargo van of almost any make or model would be...