Misfire - Help

[Matthew Green]

Good Afternoon All

I have a stock BA XR6T that recently started misfiring badly. It could be a coincidence but I did clean some hoses and piping with water (wiping not spraying). I thought something could have been wet, but it’s been 2 weeks and the car has been hot so all moisture would be gone.

The misfire is rather random, sometimes it won’t idle correctly, sometimes it’s under slight load e.g. a roundabout and sometimes only when full throttle.

I took it to my local Ford dealer (Blacklocks - Albury-Wodonga) they advised it was a blocked fuel filter as fuel pressure was down. Replaced but the issue still exists. I thought maybe dirty fuel, it now has a fresh tank of 98.

What should I try next? Coils? Plugs?

If anyone knows of a good mechanic in the Albury-Wodonga area that would also be appreciated.

Thanks in advance

Greenie

[KutaXR6t]

I had this issue with my 03 XR6T I changed the spark plugs and she was all fine. Get yourself some NGK iridium spark plugs for it, set me back about $100 at the time and fixed it up good as new!

[Matthew Green]

An update on my issue. The car was at Ford for 2 days with no result. They replaced the fuel filter and then told me they couldn't replicate the issue, a quick drive out the freeway and sure enough under throttle it misfired and lost power.

I decided I would give replacing the plugs and coils a go, I got a nasty surprise when I removed the coils. They where wet! I suspect this was from when I cleaned the engine, but I will check again soon to make sure the water didn't come from somewhere else.

About 5 minutes of removing covers and Ford could have found the issue, useless.

Anyway, all sorted and back to normal